[{"data":1,"prerenderedAt":77},["ShallowReactive",2],{"post-7bc2584cc97bde46831":3,"recom-7bc2584cc97bde46831":22},{"summary":4,"updateTime":5,"title":6,"cateName":7,"content":8,"tags":9,"cover":10,"createTime":11,"cateId":12,"isTop":13,"nickname":14,"siteId":15,"id":16,"isPage":13,"slug":17,"views":18,"status":19,"uid":16,"coverImageUrl":20,"createDate":21,"cate":12,"keywords":9},"Ten Daily Electronic Common Sense-Section-160 Looking for capacitors online purchase? is a reliable marketplace to buy and learn about capacitors. Come with us for amazing deals & information.",1776841291831,"Ten Daily Electronic Common Sense-Section-160","Tutorials","\u003Cfigure class=\"wp-block-image size-large is-resized\">\u003Cimg fetchpriority=\"high\" fetchpriority=\"high\" fetchpriority=\"high\" fetchpriority=\"high\" fetchpriority=\"high\" fetchpriority=\"high\" fetchpriority=\"high\" fetchpriority=\"high\" fetchpriority=\"high\" decoding=\"async\" src=\"/uploads/2023/01/01-2-650x303.png\" alt=\"\" class=\"wp-image-14632\" width=\"840\" height=\"392\" srcset=\"uploads/2023/01/01-2-650x303.png 650w, uploads/2023/01/01-2-400x186.png 400w, uploads/2023/01/01-2-250x117.png 250w, uploads/2023/01/01-2-768x358.png 768w, uploads/2023/01/01-2-150x70.png 150w, uploads/2023/01/01-2-800x373.png 800w, uploads/2023/01/01-2.png 869w\" sizes=\"(max-width: 840px) 100vw, 840px\" />\u003C/figure>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>After the control circuit is installed, what items should I check before powering up?\u003C/strong>\u003Cbr>Before powering up a control circuit after installation, it’s essential to perform a series of checks to ensure safety and proper functionality. Here are some key items to verify before applying power:\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>\u003Cstrong>Visual Inspection\u003C/strong>: Conduct a visual inspection of the entire control circuit to check for loose connections, damaged components, or any obvious errors in the wiring.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Polarity and Voltage\u003C/strong>: Double-check the polarity and voltage ratings of all components to ensure they are correctly connected and compatible with the power supply.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Short Circuits\u003C/strong>: Check for any unintended short circuits in the circuitry that could cause damage when power is applied.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Grounding\u003C/strong>: Verify that proper grounding connections are established to prevent electrical hazards and to ensure proper functioning of the circuit.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Fuse and Circuit Breaker\u003C/strong>: If the circuit has fuses or circuit breakers, ensure that they are correctly rated and installed to protect against overcurrent situations.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Protection Devices\u003C/strong>: Confirm the presence and proper functioning of any protective devices, such as surge protectors or transient voltage suppressors, to safeguard sensitive components from voltage spikes.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Pre-Commissioning Test\u003C/strong>: Perform a pre-commissioning test to check the control circuit’s functionality without applying full power. This may involve using a low voltage or a test power supply to validate basic operations.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Safety Measures\u003C/strong>: Ensure that appropriate safety measures are in place, such as safety switches or emergency stop buttons, to quickly disconnect power in case of any unexpected behavior.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Compliance with Specifications\u003C/strong>: Verify that the installed components and connections conform to the circuit’s design specifications and documentation.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Compatibility Check\u003C/strong>: Ensure that all interfaced devices, such as sensors, actuators, or other control elements, are compatible with the control circuit.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Review Documentation\u003C/strong>: Review the circuit’s documentation and wiring diagrams to confirm that everything is in order and that the installation aligns with the design.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Personnel Safety\u003C/strong>: Confirm that the circuit installation complies with safety standards and guidelines, and that personnel involved in the process are aware of potential hazards and safety protocols.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Load and Power Source\u003C/strong>: Make sure that the control circuit’s load (e.g., motors, solenoids) and power source (e.g., power supply) are adequately matched and can handle the required current and voltage levels.\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>Only after completing these checks and ensuring everything is in order should you proceed with powering up the control circuit. This careful approach helps prevent potential damage to equipment, minimizes safety risks, and ensures a smooth start-up process.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What are the three indicators that describe the accuracy of the sensor?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>The accuracy of a sensor refers to how closely it measures the true value of the physical quantity it is designed to sense. There are three main indicators commonly used to describe the accuracy of a sensor:\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>\u003Cstrong>Offset or Bias\u003C/strong>: Offset, also known as bias, represents the deviation of the sensor’s output from the true value when the input is zero. In other words, it is the constant error or discrepancy between the sensor’s measurement and the actual value when the physical quantity being measured is at its reference point. A sensor with zero offset has its output perfectly aligned with the true value at the reference point.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Sensitivity or Gain Error\u003C/strong>: Sensitivity indicates the relationship between changes in the physical quantity being measured and the corresponding changes in the sensor’s output. It represents the scaling factor or gain error of the sensor. A perfectly sensitive sensor will show a linear relationship between input and output, with no gain error.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Linearity\u003C/strong>: Linearity refers to how closely the sensor’s response follows a straight line when plotting the output against the input over its operating range. A sensor with excellent linearity will produce a linear relationship, while non-linearity results in a curve or deviation from linearity.\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>These three indicators are essential in quantifying the accuracy of a sensor and play a crucial role in determining its overall performance and reliability. Manufacturers typically provide specifications for these parameters in sensor datasheets, helping users understand the sensor’s behavior and select the most suitable sensor for their specific applications.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What is an embedded system?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>An embedded system is a specialized computer system designed to perform specific functions or tasks within a larger system. It is often embedded within a larger device, product, or machinery and operates as an integral part of that system. Embedded systems are purpose-built to carry out dedicated functions and are typically optimized for efficiency, reliability, and low power consumption.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>Key characteristics of embedded systems include:\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>\u003Cstrong>Dedicated Functionality\u003C/strong>: Embedded systems are designed to perform specific tasks or functions, such as controlling a machine, processing data, monitoring sensors, or running a user interface.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Integration\u003C/strong>: They are integrated into a larger system, device, or product. Examples include microcontrollers embedded in household appliances, automotive control systems, industrial machines, smartphones, and medical devices.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Real-Time Operation\u003C/strong>: Many embedded systems operate in real-time, meaning they must respond to inputs or stimuli within strict timing constraints. This is crucial for applications such as control systems or safety-critical environments.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Resource Constraints\u003C/strong>: Embedded systems often have limited resources compared to general-purpose computers. They may have constrained processing power, memory, storage, and power supply, requiring efficient software and hardware design.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Permanently Programmed\u003C/strong>: The software or firmware running on embedded systems is typically pre-programmed and remains constant throughout the device’s life cycle.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Low Power Consumption\u003C/strong>: Many embedded systems are designed to be power-efficient since they may run on batteries or require minimal power consumption in applications where power supply is limited.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Stand-Alone Operation\u003C/strong>: Embedded systems can operate independently without the need for continuous user intervention or direct interaction.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Reliability and Stability\u003C/strong>: Embedded systems often require high levels of reliability and stability to ensure consistent performance in critical applications.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Variety of Applications\u003C/strong>: Embedded systems are found in a wide range of applications, including consumer electronics, automotive systems, medical devices, industrial automation, telecommunications, and more.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Customization\u003C/strong>: Embedded systems are often customized to meet the specific requirements of the application, leading to a wide variety of configurations and designs.\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>Due to their specialized nature and targeted functionality, embedded systems play a crucial role in various industries, contributing to the advancement and automation of technology in our daily lives. As technology continues to evolve, embedded systems are becoming more sophisticated, capable, and prevalent in a diverse range of applications.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What is the static characteristics of the sensor?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>The static characteristics of a sensor refer to its performance and behavior under steady-state or static conditions. These characteristics are important to understand how the sensor responds to various input values in a stable or unchanging environment. The static characteristics provide valuable information about the accuracy, sensitivity, and linearity of the sensor. Some key static characteristics of a sensor include:\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>\u003Cstrong>Sensitivity\u003C/strong>: Sensitivity is a measure of how much the output of the sensor changes in response to a small change in the input or the physical quantity being measured. It is usually expressed as the ratio of the change in output to the change in input.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Accuracy\u003C/strong>: Accuracy represents the ability of the sensor to measure the true value of the physical quantity it is designed to sense. It is a measure of how closely the sensor’s output corresponds to the actual or reference value.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Linearity\u003C/strong>: Linearity refers to how closely the relationship between the sensor’s output and the input follows a straight line. A perfectly linear sensor exhibits a direct and proportional relationship between the input and output.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Hysteresis\u003C/strong>: Hysteresis is the difference in the sensor’s output for the same input value during increasing and decreasing input cycles. It arises due to the presence of memory effects in the sensor’s materials or mechanical components.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Repeatability\u003C/strong>: Repeatability is the ability of the sensor to provide consistent output readings for repeated measurements of the same input value under similar conditions.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Resolution\u003C/strong>: Resolution is the smallest detectable change in the input that can be reliably measured by the sensor. It determines the smallest incremental change that the sensor can sense and respond to.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Offset or Bias\u003C/strong>: Offset, also known as bias, represents the constant error or deviation of the sensor’s output from the true value at a specified reference point or input.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Noise\u003C/strong>: Noise refers to unwanted variations or fluctuations in the sensor’s output that can arise due to environmental factors or electronic interference.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Response Time\u003C/strong>: Response time is the time taken by the sensor to reach a stable output after a step change in the input.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Deadband\u003C/strong>: Deadband is the range of input values within which the sensor’s output remains unchanged, even if the input value varies. It indicates a region where the sensor is insensitive to changes in input.\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>Understanding the static characteristics of a sensor is crucial for selecting the right sensor for a particular application and for assessing the reliability and accuracy of the sensor’s measurements under static or steady-state conditions. Manufacturers typically provide specifications for these static characteristics in the sensor datasheets to aid users in making informed decisions.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>How are the words and halfwords of the memory defined?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>In computer architecture, memory is typically organized into units called bytes, halfwords, words, and sometimes double words (or quad words). The size of these units depends on the architecture and the specific implementation. Here’s how the words and halfwords are defined:\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>\u003Cstrong>Byte\u003C/strong>: A byte is the smallest addressable unit of memory in most computer architectures. It is typically composed of 8 bits and can represent 256 different values (2^8).\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Halfword\u003C/strong>: A halfword is a memory unit that is typically 2 bytes or 16 bits in size. It is also known as a “short” or “halfword integer.” Depending on the architecture, a halfword can represent 65,536 different values (2^16).\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Word\u003C/strong>: A word is a memory unit that is usually 4 bytes or 32 bits in size. It is also referred to as a “single” or “word integer.” A word can represent 4,294,967,296 different values (2^32).\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Double Word\u003C/strong>: A double word, also known as a “longword” or “double,” is typically 8 bytes or 64 bits in size. It can represent a very large range of values, depending on the architecture, typically 2^64 different values.\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>The size of these memory units can vary depending on the computer architecture. For example, in some architectures, a byte is 8 bits, while in others, it might be 9 or more bits. Similarly, the word size can be different; some architectures use 4 bytes as the word size, while others use 2, 8, or even more bytes.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>It’s important to note that the memory organization and word sizes of different computer architectures can have significant implications for the efficiency and performance of programs running on those systems. When writing software that needs to be portable across different architectures, developers need to be mindful of these memory unit sizes and consider using data types with specific bit-widths to ensure consistent behavior across platforms.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What are the classifications of the difference in pulse amplitude between various noise pulses and optoelectronic signals?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>In optoelectronic systems, differences in pulse amplitude between noise pulses and actual optoelectronic signals can be classified into several categories based on their origin and characteristics. These classifications are essential for understanding the quality of the signals and the impact of noise on the overall performance of the system. Here are some common classifications:\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>\u003Cstrong>Thermal Noise\u003C/strong>: Also known as Johnson-Nyquist noise, this type of noise is inherent in electronic components due to the thermal motion of charge carriers. It affects both the optoelectronic signal and the background noise, leading to random fluctuations in pulse amplitudes.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Shot Noise\u003C/strong>: Shot noise occurs due to the discrete nature of photons in an optical signal. It results from the statistical variation in the arrival times of individual photons at the detector, causing fluctuations in the pulse amplitude.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Dark Current Noise\u003C/strong>: In optoelectronic devices like photodiodes, dark current noise is caused by the leakage current in the absence of light. It contributes to noise levels even when no optical signal is present.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Amplification Noise\u003C/strong>: Amplification stages in optoelectronic systems can introduce noise, particularly in high-gain applications. Amplification noise can be attributed to the electronic components and their imperfections.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Interference Noise\u003C/strong>: Interference noise arises from external sources, such as electromagnetic interference (EMI) or radio frequency interference (RFI). It can couple into the optoelectronic system and cause fluctuations in pulse amplitudes.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Crosstalk\u003C/strong>: In certain optical communication systems, crosstalk may occur when signals intended for one channel interfere with or leak into adjacent channels. This can lead to changes in pulse amplitudes and affect signal integrity.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Spurious Signals\u003C/strong>: Spurious signals can arise from various sources, such as reflections, scattering, or unintended coupling. They manifest as unwanted pulses with varying amplitudes, interfering with the original signal.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Quantization Noise\u003C/strong>: In digital optoelectronic systems, quantization noise occurs due to the limited precision of analog-to-digital converters (ADCs). It can introduce small amplitude variations during signal digitization.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Environmental Noise\u003C/strong>: Environmental factors, such as temperature fluctuations, humidity, and vibrations, can impact the performance of optoelectronic systems and introduce noise.\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>Each type of noise can have specific characteristics and a different impact on the optoelectronic signals. Minimizing noise and understanding its sources are essential for optimizing signal quality, improving system performance, and ensuring accurate data transmission in optoelectronic applications. Various noise reduction techniques and signal processing methods can be employed to mitigate the effects of noise and enhance signal reliability.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What are the two major categories of thermistors?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>Thermistors are temperature-sensitive resistors used to measure and monitor temperature changes. They can be broadly classified into two major categories based on their temperature coefficient of resistance (TCR):\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>\u003Cstrong>Negative Temperature Coefficient (NTC) Thermistors\u003C/strong>: NTC thermistors are the most common type of thermistors. As the temperature increases, the resistance of NTC thermistors decreases. They are composed of semiconductor materials with a negative temperature coefficient, which means their resistance decreases as the temperature rises. NTC thermistors are widely used in various temperature sensing applications, such as temperature controllers, temperature compensation circuits, and temperature measurement systems.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Positive Temperature Coefficient (PTC) Thermistors\u003C/strong>: PTC thermistors have a positive temperature coefficient, meaning their resistance increases with increasing temperature. Unlike NTC thermistors, PTC thermistors exhibit a rise in resistance as the temperature rises. They are made of special ceramic materials with this characteristic. PTC thermistors are commonly used in applications where they act as self-regulating heaters or as temperature protection devices. When used as heaters, PTC thermistors heat up as their resistance increases, and they eventually reach a stable temperature, preventing overheating.\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>Both NTC and PTC thermistors have unique characteristics and applications based on their TCR behavior. Their ability to sense and respond to temperature changes makes them valuable components in various electronic and electrical systems where temperature monitoring, control, or protection is essential.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What is the preparation method of low temperature polysilicon TFT technology?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>The preparation method of low-temperature polysilicon (LTPS) thin-film transistor (TFT) technology involves the fabrication of thin-film transistors using polysilicon as the semiconductor material. LTPS TFT technology is widely used in the manufacturing of high-resolution displays, such as LCDs and OLEDs, as well as in various other applications. The key feature of LTPS technology is the use of low-temperature processes, which allows for the deposition of polysilicon on flexible substrates or glass at temperatures lower than the traditional high-temperature polysilicon processes. Below are the main steps involved in the preparation of LTPS TFTs:\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>\u003Cstrong>Substrate Preparation\u003C/strong>: The first step is to prepare the substrate on which the LTPS TFTs will be fabricated. The substrate is typically made of glass or flexible materials like plastic. It is cleaned and treated to create a suitable surface for the subsequent layers.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Deposition of Gate Insulator\u003C/strong>: A thin layer of insulating material, such as silicon dioxide (SiO2), is deposited on the substrate using techniques like chemical vapor deposition (CVD) or physical vapor deposition (PVD). This layer acts as the gate insulator.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Deposition of Gate Electrode\u003C/strong>: Next, a layer of conductive material, such as aluminum or indium tin oxide (ITO), is deposited on the gate insulator to form the gate electrode. This electrode will control the flow of current in the TFT.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Deposition of Amorphous Silicon (a-Si)\u003C/strong>: A layer of amorphous silicon is deposited on top of the gate electrode. This layer will later be transformed into polysilicon using a low-temperature annealing process.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Laser Annealing\u003C/strong>: To crystallize the amorphous silicon into polysilicon at low temperatures, a laser annealing process is employed. A high-power laser is used to locally heat the silicon, promoting recrystallization and transforming it into polysilicon.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Deposition of Source and Drain Contacts\u003C/strong>: After the polysilicon layer is formed, source and drain contacts are deposited on top of the polysilicon layer using metal deposition techniques.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Passivation Layer\u003C/strong>: A passivation layer made of silicon nitride (SiNx) or other insulating material is deposited on top of the TFT structure to protect it from external contaminants and moisture.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Contact Openings and Metallization\u003C/strong>: Contact openings are made in the passivation layer to expose the source and drain contacts. Metal layers are then deposited and patterned to form the source and drain electrodes.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Deposition of Pixel Electrode (for Display Applications)\u003C/strong>: In display applications, an additional layer of transparent conductive material, such as indium tin oxide (ITO), is deposited to form the pixel electrode. This electrode will be used to control the individual pixels in the display.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Testing and Packaging\u003C/strong>: The completed LTPS TFTs are tested for performance and quality. They are then assembled and packaged to protect them from environmental factors and to ensure proper connectivity with other components in the final application.\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>LTPS TFT technology offers several advantages, including better electrical performance, higher electron mobility, and the ability to produce high-resolution displays with improved image quality. Additionally, the use of low-temperature processes enables the fabrication of flexible displays and reduces the cost of manufacturing.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>How is the general design of FPGA?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>The general design of an FPGA (Field-Programmable Gate Array) involves several key components and stages that enable the device to be configured and programmed to perform specific functions. FPGA is a reconfigurable integrated circuit that allows users to define the functionality and interconnectivity of its logic blocks. Here is the general design of an FPGA:\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>\u003Cstrong>Configurable Logic Blocks (CLBs)\u003C/strong>: CLBs are the fundamental building blocks of an FPGA. They consist of lookup tables (LUTs), flip-flops, and other logic elements. LUTs store truth tables, allowing users to implement custom logic functions.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Switch Matrix (Interconnect):\u003C/strong> The switch matrix is responsible for connecting the various CLBs and other functional elements within the FPGA. It provides a flexible interconnection network that allows users to route signals and data between different components.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Input/Output Blocks (IOBs)\u003C/strong>: IOBs serve as the interface between the FPGA and external devices. They provide connections for inputs and outputs, such as data from sensors or control signals to actuators.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Clock Management\u003C/strong>: FPGA devices incorporate dedicated clock management resources, such as phase-locked loops (PLLs) and delay-locked loops (DLLs), to generate and distribute clock signals throughout the device. Clock management is crucial for synchronizing the operation of different components.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Embedded Memory Blocks\u003C/strong>: FPGAs often include dedicated memory blocks, such as RAM (Random Access Memory) and ROM (Read-Only Memory), for temporary data storage and configuration storage, respectively.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Configuration Memory\u003C/strong>: The configuration memory is used to store the bitstream that defines the FPGA’s logic and interconnect configuration. During startup, the bitstream is loaded into the FPGA to program its functionality.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Configuration Interface\u003C/strong>: The configuration interface is the pathway through which the bitstream is loaded into the FPGA. It can be based on serial or parallel interfaces, depending on the FPGA model.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Hard IP Cores\u003C/strong>: Many modern FPGAs also integrate hard intellectual property (IP) cores, which are dedicated hardware blocks for specific functions, such as processors (e.g., ARM cores), DSP units, or Ethernet controllers. These hard IP cores provide pre-designed and optimized hardware for common tasks.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Design Tools\u003C/strong>: FPGA design starts with the use of design tools provided by FPGA vendors. These tools include hardware description languages (HDLs) like Verilog or VHDL, synthesis tools, place-and-route tools, and verification tools. The design flow involves creating and simulating the design, synthesizing it into a netlist, and mapping it to the FPGA resources.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>JTAG Interface\u003C/strong>: FPGAs often include a JTAG (Joint Test Action Group) interface, which allows for debugging, testing, and in-circuit programming of the device.\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>The general design of an FPGA provides a highly flexible and customizable platform for implementing a wide range of digital circuits and systems. Users can configure the FPGA to meet their specific application requirements, making it suitable for prototyping, rapid development, and deployment in various electronic systems.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What are the advantages of MOST?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>MOST (Media Oriented Systems Transport) is a multimedia networking technology primarily used in automotive infotainment systems. It offers several advantages that make it a popular choice for in-vehicle communication and entertainment. Some of the key advantages of MOST include:\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>\u003Cstrong>High Bandwidth and Data Rates\u003C/strong>: MOST provides high-speed data transmission, enabling the seamless transfer of multimedia content within the vehicle. It supports data rates of up to 150 Mbps, allowing for the efficient transfer of high-quality audio, video, and data streams.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Low Latency\u003C/strong>: MOST is designed to minimize latency, ensuring real-time and synchronous delivery of multimedia data. This low latency is critical for applications like audio streaming and real-time control in the vehicle.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Isochronous Data Transfer\u003C/strong>: MOST is optimized for isochronous data transfer, meaning it guarantees a constant and steady data flow, essential for multimedia applications. This ensures smooth and uninterrupted playback of audio and video content.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Scalability\u003C/strong>: MOST offers scalable solutions, accommodating a wide range of infotainment system configurations and requirements. It can support various network topologies, making it suitable for vehicles of different sizes and complexities.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Low EMI (Electromagnetic Interference)\u003C/strong>: MOST employs a fiber-optic-based physical layer, which significantly reduces electromagnetic interference and improves the overall electromagnetic compatibility (EMC) of the vehicle.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Reduced Weight and Size\u003C/strong>: The use of fiber-optic cables instead of traditional copper wiring leads to a reduction in weight and size, contributing to fuel efficiency and space savings within the vehicle.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Plug-and-Play Connectivity\u003C/strong>: MOST supports plug-and-play connectivity for easy integration of infotainment components. This simplifies the installation and replacement of multimedia devices and reduces development time.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Robustness and Reliability\u003C/strong>: MOST is designed to provide robust and reliable communication, even in the presence of harsh automotive environments with temperature variations, vibrations, and noise.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Energy Efficiency\u003C/strong>: MOST is power-efficient, consuming less energy compared to some other communication technologies, making it suitable for automotive applications with strict power constraints.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Standardization and Industry Support\u003C/strong>: MOST is an international standard (ISO 21806) with widespread industry support. This standardization ensures interoperability and compatibility among various automotive devices and systems from different manufacturers.\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>Due to these advantages, MOST has become a popular choice for automotive manufacturers seeking a reliable, high-speed, and efficient communication solution for multimedia applications in modern vehicles. It allows for a seamless user experience, providing passengers with a variety of entertainment options and connectivity features while ensuring safety and comfort during travel.\u003C/p>\r\n\u003C/div>\r\n\t\t\t\t\t\t\u003Cdiv class=\"clear\">\u003C/div>\r\n\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\u003C!-- clear for photos floats -->\r\n\t\t\t\t\t\t\u003Cdiv class=\"clear\">","Electronic","uploads/2023/01/01-2-650x303.png",1776793311000,"20db6653d7e85fded62",0,"Admin","2028706543895019522","7bc2584cc97bde46831","ten-daily-electronic-common-sense-section-160",424,1,"/uploads/2023/01/01-2-650x303.png","Apr 22, 2026",[23,33,42,50,60,69],{"id":24,"title":25,"summary":26,"content":27,"cover":28,"cateId":12,"tags":28,"views":29,"isTop":13,"status":19,"createBy":28,"createTime":30,"updateBy":28,"updateTime":31,"institutionId":28,"isPage":13,"images":28,"horizontalCover":28,"verticalCover":28,"slug":32,"siteId":15},"c047d1a580d380475ed","What are the development tools for supporting 2802x-based applications?","What are the development tools for supporting 2802x-based applications? Looking for capacitors online purchase? is a reliable marketplace to buy and learn about capacitors. Come with us for amazing deals & information.","\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva; font-size: 12pt;\">\u003Cspan style=\"color: #c70a0a;\">*\u003C/span> \u003Cspan style=\"color: #808080;\">Question\u003C/span>\u003C/span>\u003C/p>\r\n\u003Ctable>\r\n\u003Ctbody>\r\n\u003Ctr>\r\n\u003Ctd width=\"1136\">What are the development tools for supporting 2802x-based applications?\u003C/td>\r\n\u003C/tr>\r\n\u003C/tbody>\r\n\u003C/table>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">\u003Cspan style=\"color: #c70a0a;\">\u003Cbr />\r\n\u003Cspan style=\"font-size: 12pt;\">*\u003C/span>\u003C/span>\u003Cspan style=\"color: #808080; font-size: 12pt;\"> Answer\u003C/span>\u003C/span>\u003C/p>\r\n\u003Cp>\u003Cspan style=\"font-size: inherit;\">● CodeComposerStudi0 integrated development environment IDE – c / c compiler A code generation tool An assembler / linker One cycle accurate simulator \u003C/span>\u003C/p>\r\n\u003Cp>\u003Cspan style=\"font-size: inherit;\">● Application algorithm · \u003C/span>\u003C/p>\r\n\u003Cp>\u003Cspan style=\"font-size: inherit;\">\u003C/span>\u003C/p>\r\n\u003C/div>\r\n\t\t\t\t\t\t\u003Cdiv class=\"clear\">\u003C/div>\r\n\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\u003C!-- clear for photos floats -->\r\n\t\t\t\t\t\t\u003Cdiv class=\"clear\">",null,238,"2026-04-22 01:44:14","2026-04-22 14:58:27","what-are-the-development-tools-for-supporting-2802x-based-applications",{"id":34,"title":35,"summary":36,"content":37,"cover":28,"cateId":12,"tags":38,"views":39,"isTop":13,"status":19,"createBy":28,"createTime":40,"updateBy":28,"updateTime":31,"institutionId":28,"isPage":13,"images":28,"horizontalCover":28,"verticalCover":28,"slug":41,"siteId":15},"6d16643f4061eb43174","What is the thermocouple sensor made of?","What is the thermocouple sensor made of? Looking for capacitors online purchase? is a reliable marketplace to buy and learn about capacitors. Come with us for amazing deals & information.","\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva; font-size: 12pt;\">\u003Cspan style=\"color: #c70a0a;\">*\u003C/span> \u003Cspan style=\"color: #808080;\">Question\u003C/span>\u003C/span>\u003C/p>\r\n\u003Ctable>\r\n\u003Ctbody>\r\n\u003Ctr>\r\n\u003Ctd width=\"1136\">\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">What is the thermocouple sensor made of?\u003C/span>\u003C/td>\r\n\u003C/tr>\r\n\u003C/tbody>\r\n\u003C/table>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">\u003Cspan style=\"color: #c70a0a;\">\u003Cbr />\r\n\u003Cspan style=\"font-size: 12pt;\">*\u003C/span>\u003C/span>\u003Cspan style=\"color: #808080; font-size: 12pt;\"> Answer\u003C/span>\u003C/span>\u003C/p>\r\n\u003Ctable>\r\n\u003Ctbody>\r\n\u003Ctr>\r\n\u003Ctd width=\"1136\">\u003Cspan style=\"font-family: trebuchet-ms;\">A thermocouple sensor is a thermal sensor that uses thermoelectric phenomena.\u003C/span>\u003C/td>\r\n\u003C/tr>\r\n\u003C/tbody>\r\n\u003C/table>\r\n\u003Cp>\u003Cspan style=\"font-size: inherit;\">\u003Cbr />\r\n\u003C/span>\u003C/p>","sensor",229,"2026-04-22 01:43:58","what-is-the-thermocouple-sensor-made-of",{"id":43,"title":44,"summary":45,"content":46,"cover":28,"cateId":12,"tags":47,"views":48,"isTop":13,"status":19,"createBy":28,"createTime":40,"updateBy":28,"updateTime":31,"institutionId":28,"isPage":13,"images":28,"horizontalCover":28,"verticalCover":28,"slug":49,"siteId":15},"61750966158705a45ac","What is the goal of software design for terminal nodes?","What is the goal of software design for terminal nodes? Looking for capacitors online purchase? is a reliable marketplace to buy and learn about capacitors. Come with us for amazing deals & information.","\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva; font-size: 12pt;\">\u003Cspan style=\"color: #c70a0a;\">*\u003C/span> \u003Cspan style=\"color: #808080;\">Question\u003C/span>\u003C/span>\u003C/p>\r\n\u003Ctable>\r\n\u003Ctbody>\r\n\u003Ctr>\r\n\u003Ctd width=\"1136\">What is the goal of software design for terminal nodes?\u003C/td>\r\n\u003C/tr>\r\n\u003C/tbody>\r\n\u003C/table>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">\u003Cspan style=\"color: #c70a0a;\">\u003Cbr />\r\n\u003Cspan style=\"font-size: 12pt;\">*\u003C/span>\u003C/span>\u003Cspan style=\"color: #808080; font-size: 12pt;\"> Answer\u003C/span>\u003C/span>\u003C/p>\r\n\u003Ctable>\r\n\u003Ctbody>\r\n\u003Ctr>\r\n\u003Ctd width=\"1136\">Data acquisition of analog input and digital input through C language, that is, collecting parameters from electrical equipment in power grid and substation, and classifying data to master the operation status of the substation and the status of electrical equipment in the station;The command, the jump switch, to achieve the purpose of monitoring and control.\u003C/td>\r\n\u003C/tr>\r\n\u003C/tbody>\r\n\u003C/table>\r\n\u003Cp>\u003Cspan style=\"font-size: inherit;\">\u003Cbr />\r\n\u003C/span>\u003C/p>\r\n\u003C/div>\r\n\t\t\t\t\t\t\u003Cdiv class=\"clear\">\u003C/div>\r\n\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\u003C!-- clear for photos floats -->\r\n\t\t\t\t\t\t\u003Cdiv class=\"clear\">","design,terminal",224,"what-is-the-goal-of-software-design-for-terminal-nodes",{"id":51,"title":52,"summary":53,"content":54,"cover":55,"cateId":12,"tags":28,"views":56,"isTop":13,"status":19,"createBy":28,"createTime":57,"updateBy":28,"updateTime":58,"institutionId":28,"isPage":13,"images":28,"horizontalCover":28,"verticalCover":28,"slug":59,"siteId":15},"a39a5d8553e41a5005a","Template Analysis Method For EMC Problems","Template Analysis Method For EMC Problems Looking for capacitors online purchase? is a reliable marketplace to buy and learn about capacitors. Come with us for amazing deals & information.","\u003Ctable>\r\n\u003Ctbody>\r\n\u003Ctr>\r\n\u003Ctd width=\"198\">\r\n\u003Cp>\u003Cdiv id=\"attachment_5001\" style=\"width: 265px\" class=\"wp-caption alignnone\">\u003Cimg loading=\"lazy\" loading=\"lazy\" loading=\"lazy\" loading=\"lazy\" loading=\"lazy\" loading=\"lazy\" loading=\"lazy\" loading=\"lazy\" aria-describedby=\"caption-attachment-5001\" decoding=\"async\" class=\" wp-image-5001\" src=\"uploads/2019/10/Forms-of-electromagnetic-interference-400x224.jpg\" alt=\"\" width=\"255\" height=\"143\" srcset=\"uploads/2019/10/Forms-of-electromagnetic-interference-400x224.jpg 400w, uploads/2019/10/Forms-of-electromagnetic-interference-250x140.jpg 250w, uploads/2019/10/Forms-of-electromagnetic-interference-150x84.jpg 150w, uploads/2019/10/Forms-of-electromagnetic-interference.jpg 640w\" sizes=\"(max-width: 255px) 100vw, 255px\" />\u003Cp id=\"caption-attachment-5001\" class=\"wp-caption-text\">\u003C/span> \u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">The form of electromagnetic interference\u003C/span>\u003C/p>\u003C/div>\u003C/td>\r\n\u003Ctd width=\"425\">\r\n\u003Cp>\u003Cdiv id=\"attachment_5004\" style=\"width: 376px\" class=\"wp-caption alignnone\">\u003Cimg fetchpriority=\"high\" fetchpriority=\"high\" fetchpriority=\"high\" fetchpriority=\"high\" fetchpriority=\"high\" fetchpriority=\"high\" fetchpriority=\"high\" fetchpriority=\"high\" aria-describedby=\"caption-attachment-5004\" fetchpriority=\"high\" decoding=\"async\" class=\" wp-image-5004\" src=\"uploads/2019/10/The-main-form-of-electromagnetic-interference-400x182.jpg\" alt=\"\" width=\"366\" height=\"166\" srcset=\"uploads/2019/10/The-main-form-of-electromagnetic-interference-400x182.jpg 400w, uploads/2019/10/The-main-form-of-electromagnetic-interference-250x114.jpg 250w, uploads/2019/10/The-main-form-of-electromagnetic-interference-150x68.jpg 150w, uploads/2019/10/The-main-form-of-electromagnetic-interference.jpg 562w\" sizes=\"(max-width: 366px) 100vw, 366px\" />\u003Cp id=\"caption-attachment-5004\" class=\"wp-caption-text\">\u003C/span> \u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">The main form of electromagnetic interference\u003C/span>\u003C/p>\u003C/div>\u003C/td>\r\n\u003C/tr>\r\n\u003C/tbody>\r\n\u003C/table>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">The electromagnetic interference problem is a key issue in any hardware design field. It is especially important to understand the initial dry electromagnetic interference problem to solve this problem.\u003C/span>\u003C/p>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">\u003Cstrong>The electromagnetic interference model has three basic elements:\u003C/strong>\u003C/span>\u003C/p>\r\n\u003Col>\r\n\u003Cli>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">There is electromagnetic interference energy.\u003C/span>\u003C/li>\r\n\u003Cli>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">There is a device that is subject to electromagnetic interference.\u003C/span>\u003C/li>\r\n\u003Cli>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">There is a coupling channel to transmit electromagnetic energy between the interfered and interfered devices.\u003C/span>\u003C/li>\r\n\u003C/ol>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">Electromagnetic interference only occurs when these three basic elements are met at the same time. EMC engineers should determine the EMC design content and design direction based on the physical structure.\u003C/span>\u003C/p>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">The EMC analysis template is determined by the electrical length of the structure. Converting the physical dimensions of the device structure to electrical length is the starting point for design and problem finding. The combination and connection of templates constitute a model for analyzing electromagnetic compatibility problems. The template analysis method is to select the appropriate template and electromagnetic logic connection according to the actual problem and structure to form a dynamic process of complete electromagnetic interference phenomenon.\u003C/span>\u003C/p>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">The EMC design of printed circuit boards is the cheapest and most effective way to eliminate the main sources of RF interference. When the interference source on the printed circuit board and the victim device exist in the same small space, the engineer must control the electromagnetic energy generated. This means that electromagnetic energy is only present at the required assembly parts. This is the method of removing EMC problems, electromagnetic suppression or electromagnetic cancellation.\u003C/span>\u003C/p>\r\n\u003C/div>\r\n\t\t\t\t\t\t\u003Cdiv class=\"clear\">\u003C/div>\r\n\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\u003C!-- clear for photos floats -->\r\n\t\t\t\t\t\t\u003Cdiv class=\"clear\">","uploads/2019/10/Forms-of-electromagnetic-interference-400x224.jpg",498,"2026-04-22 01:43:54","2026-04-22 14:58:28","template-analysis-method-for-emc-problems",{"id":61,"title":62,"summary":63,"content":64,"cover":65,"cateId":12,"tags":28,"views":66,"isTop":13,"status":19,"createBy":28,"createTime":67,"updateBy":28,"updateTime":58,"institutionId":28,"isPage":13,"images":28,"horizontalCover":28,"verticalCover":28,"slug":68,"siteId":15},"86325bcdfe62f25cc0b","Judgment Method of Three Types of Amplifiers","Judgment Method of Three Types of Amplifiers Looking for capacitors online purchase? is a reliable marketplace to buy and learn about capacitors. Come with us for amazing deals & information.","\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">Triode based audio and electronic amplifiers are very commonly found in many walks of life. Although, the transistor based amplifiers created the danger of obsolescence of tube amplifiers, the tube amplifiers have succeeded in maintaining a cult following amongst the audiophiles. The main reason behind this is the warm and crunchy sound response of tube amplifiers.\u003C/span>\u003C/p>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">The main component in tube amplifiers is the triode. Triode is essentially an amplifying vacuum tube which consists of three electrodes inside a glass casing. The electrodes are known as anode, cathode, and grid respectively. Triodes were widely used in all types of electronic circuits until they got replaced by transistors. [\u003Ca href=\"#Lee19\">1\u003C/a>]\u003C/span>\u003C/p>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">According to the electronic circuit configuration, there are three main types of amplifiers. These types include common emitter, common collector, and common base amplifiers. Following sub-sections provide an ample discussion on these amplifier types.\u003C/span>\u003C/p>\r\n\u003Cdiv id=\"ez-toc-container\" class=\"ez-toc-v2_0_69_1 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\r\n\u003Cdiv class=\"ez-toc-title-container\">\r\n\u003Cp class=\"ez-toc-title \" >Table of Contents\u003C/p>\r\n\u003Cspan class=\"ez-toc-title-toggle\">\u003Ca href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\">\u003Cspan class=\"ez-toc-js-icon-con\">\u003Cspan class=\"\">\u003Cspan class=\"eztoc-hide\" style=\"display:none;\">Toggle\u003C/span>\u003Cspan class=\"ez-toc-icon-toggle-span\">\u003Csvg style=\"fill: #999;color:#999\" xmlns=\"http://www.w3.org/2000/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\">\u003Cpath d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\">\u003C/path>\u003C/svg>\u003Csvg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http://www.w3.org/2000/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\">\u003Cpath d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"/>\u003C/svg>\u003C/span>\u003C/span>\u003C/span>\u003C/a>\u003C/span>\u003C/div>\r\n\u003Cnav>\u003Cul class='ez-toc-list ez-toc-list-level-1 ' >\u003Cli class='ez-toc-page-1 ez-toc-heading-level-1'>\u003Ca class=\"ez-toc-link ez-toc-heading-1\" href=\"#Common_Emitter_Amplifier\" title=\"Common Emitter Amplifier\">Common Emitter Amplifier\u003C/a>\u003C/li>\u003Cli class='ez-toc-page-1 ez-toc-heading-level-1'>\u003Ca class=\"ez-toc-link ez-toc-heading-2\" href=\"#Common_Collector_Amplifier\" title=\"Common Collector Amplifier\">Common Collector Amplifier\u003C/a>\u003C/li>\u003Cli class='ez-toc-page-1 ez-toc-heading-level-1'>\u003Ca class=\"ez-toc-link ez-toc-heading-3\" href=\"#Common_Base_Amplifier\" title=\"Common Base Amplifier\">Common Base Amplifier\u003C/a>\u003C/li>\u003Cli class='ez-toc-page-1 ez-toc-heading-level-1'>\u003Ca class=\"ez-toc-link ez-toc-heading-4\" href=\"#Works_Cited\" title=\"Works Cited\">Works Cited\u003C/a>\u003C/li>\u003C/ul>\u003C/nav>\u003C/div>\r\n\u003Ch1>\u003Cspan class=\"ez-toc-section\" id=\"Common_Emitter_Amplifier\">\u003C/span>\u003Cspan style=\"font-size: 14pt; font-family: 'Trebuchet MS', Geneva;\">Common Emitter Amplifier\u003C/span>\u003Cspan class=\"ez-toc-section-end\">\u003C/span>\u003C/h1>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">Common emitter amplifiers are the most widely used type of amplifiers. Common emitter amplifiers can be identified easily by the grounded emitter terminal. Like all other amplifiers, the CE amplifier also operates on an AC input. The common emitter amplifier is a single-stage amplifier which uses a BJT transistor or a triode as an amplifying element. The circuit of common emitter amplifier is given as following:\u003C/span>\u003C/p>\r\n\u003Cdiv id=\"attachment_4685\" style=\"width: 670px\" class=\"wp-caption alignnone\">\u003Cimg fetchpriority=\"high\" fetchpriority=\"high\" fetchpriority=\"high\" fetchpriority=\"high\" fetchpriority=\"high\" fetchpriority=\"high\" fetchpriority=\"high\" fetchpriority=\"high\" aria-describedby=\"caption-attachment-4685\" fetchpriority=\"high\" decoding=\"async\" class=\" wp-image-4685\" src=\"uploads/2019/09/Figure-1-Common-Emitter-Amplifier-Circuit.jpg\" alt=\"\" width=\"660\" height=\"512\" srcset=\"uploads/2019/09/Figure-1-Common-Emitter-Amplifier-Circuit.jpg 387w, uploads/2019/09/Figure-1-Common-Emitter-Amplifier-Circuit-250x194.jpg 250w, uploads/2019/09/Figure-1-Common-Emitter-Amplifier-Circuit-150x116.jpg 150w\" sizes=\"(max-width: 660px) 100vw, 660px\" />\u003Cp id=\"caption-attachment-4685\" class=\"wp-caption-text\">\u003C/span> \u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">Figure 1: Common Emitter Amplifier Circuit\u003C/span>\u003C/p>\u003C/div>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">\u003Ca href=\"https://www.elprocus.com/common-emitter-amplifier-circuit-working/\">https://www.elprocus.com/common-emitter-amplifier-circuit-working/\u003C/a>\u003C/span>\u003C/p>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">The resistors R1 and R2 form a voltage divider circuit which is used for biasing the transistor. The resistor R\u003Csub>E \u003C/sub>provides thermal stability to the amplifier. A coupling capacitor is present on the input side of the transistor which filters out DC component from the signal. [\u003Ca href=\"#Tar19\">2\u003C/a>]\u003C/span>\u003C/p>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">Major advantages of common emitter amplifier include low input impedance, high output impedance, high power gain, low noise, and high current gain. Main disadvantages of common emitter amplifier include unsuitability for high frequencies, unstable voltage gain, high thermal instability, and high output resistance. The CE amplifiers find their applications in low frequency voltage amplifiers, RF circuits, and low noise amplifiers. [\u003Ca href=\"#Tar19\">2\u003C/a>]\u003C/span>\u003C/p>\r\n\u003Ch1>\u003Cspan class=\"ez-toc-section\" id=\"Common_Collector_Amplifier\">\u003C/span>\u003Cspan style=\"font-size: 14pt; font-family: 'Trebuchet MS', Geneva;\">Common Collector Amplifier\u003C/span>\u003Cspan class=\"ez-toc-section-end\">\u003C/span>\u003C/h1>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">The common collector amplifier can be identified from the grounded collector terminal of the triode or the transistor. The common collector amplifiers are mostly used as buffers in multi-stage amplifier circuits. The CC amplifier circuit is given as following:\u003C/span>\u003C/p>\r\n\u003Cdiv id=\"attachment_4686\" style=\"width: 633px\" class=\"wp-caption alignnone\">\u003Cimg loading=\"lazy\" loading=\"lazy\" loading=\"lazy\" loading=\"lazy\" loading=\"lazy\" loading=\"lazy\" loading=\"lazy\" loading=\"lazy\" aria-describedby=\"caption-attachment-4686\" decoding=\"async\" class=\" wp-image-4686\" src=\"uploads/2019/09/Figure-2-Common-Collector-Amplifier-or-Emitter-Follower-Circuit.jpg\" alt=\"\" width=\"623\" height=\"509\" srcset=\"uploads/2019/09/Figure-2-Common-Collector-Amplifier-or-Emitter-Follower-Circuit.jpg 329w, uploads/2019/09/Figure-2-Common-Collector-Amplifier-or-Emitter-Follower-Circuit-250x204.jpg 250w, uploads/2019/09/Figure-2-Common-Collector-Amplifier-or-Emitter-Follower-Circuit-150x123.jpg 150w\" sizes=\"(max-width: 623px) 100vw, 623px\" />\u003Cp id=\"caption-attachment-4686\" class=\"wp-caption-text\">\u003C/span> \u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">Figure 2 Common Collector Amplifier or Emitter Follower Circuit\u003C/span>\u003C/p>\u003C/div>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\"> \u003Ca href=\"https://www.elprocus.com/common-collector-amplifier-circuit-working/\">https://www.elprocus.com/common-collector-amplifier-circuit-working/\u003C/a>\u003C/span>\u003C/p>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">The input signal is introduced via the base of the triode whereas the output is taken from the emitter terminal. The main advantages of CC amplifier include high current gain, high input resistance, and low output resistance. The disadvantages of CC amplifier include low voltage gain. The CC amplifiers find their applications as impedance matching amplifiers, isolation amplifiers, and buffer amplifiers in cascade or multi-stage amplifier systems. [\u003Ca href=\"#Dav19\">3\u003C/a>]\u003C/span>\u003C/p>\r\n\u003Ch1>\u003Cspan class=\"ez-toc-section\" id=\"Common_Base_Amplifier\">\u003C/span>\u003Cspan style=\"font-size: 14pt; font-family: 'Trebuchet MS', Geneva;\">Common Base Amplifier\u003C/span>\u003Cspan class=\"ez-toc-section-end\">\u003C/span>\u003C/h1>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">The common base amplifier configuration is not as widely used as the CE and CC amplifiers. They are mostly used in high frequency circuits. In a common base amplifier the base terminal of the triode is connected to the ground, the input signal is applied to the emitter, and the output is taken from the collector terminal. The circuit diagram of the CB amplifier is given as following:\u003C/span>\u003C/p>\r\n\u003Cdiv id=\"attachment_4687\" style=\"width: 688px\" class=\"wp-caption alignnone\">\u003Cimg loading=\"lazy\" loading=\"lazy\" loading=\"lazy\" loading=\"lazy\" loading=\"lazy\" loading=\"lazy\" loading=\"lazy\" loading=\"lazy\" aria-describedby=\"caption-attachment-4687\" decoding=\"async\" class=\" wp-image-4687\" src=\"uploads/2019/09/Figure-3-Common-Base-Amplifier-using-an-NPN-Transistor.png\" alt=\"\" width=\"678\" height=\"835\" srcset=\"uploads/2019/09/Figure-3-Common-Base-Amplifier-using-an-NPN-Transistor.png 194w, uploads/2019/09/Figure-3-Common-Base-Amplifier-using-an-NPN-Transistor-150x185.png 150w\" sizes=\"(max-width: 678px) 100vw, 678px\" />\u003Cp id=\"caption-attachment-4687\" class=\"wp-caption-text\">\u003C/span> \u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">Figure 3 Common Base Amplifier using an NPN Transistor\u003C/span>\u003C/p>\u003C/div>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">\u003Ca href=\"https://www.electronics-tutorials.ws/amplifier/common-base-amplifier.html\">https://www.electronics-tutorials.ws/amplifier/common-base-amplifier.html\u003C/a>\u003C/span>\u003C/p>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">The CB amplifiers are used in high frequency circuits where low input impedance is required. They are used in applications such as moving coil microphone pre-amplifiers, UHF, VHF, and RF amplifiers. The advantages of CB amplifier include decent voltage gain and current buffering capability. The disadvantages include need for dual power supply, low input impedance, low current gain, and high output impedance. [\u003Ca href=\"#www19\">4\u003C/a>]\u003C/span>\u003C/p>\r\n\u003Ch1>\u003Cspan class=\"ez-toc-section\" id=\"Works_Cited\">\u003C/span>\u003Cspan style=\"font-size: 14pt; font-family: 'Trebuchet MS', Geneva;\">Works Cited\u003C/span>\u003Cspan class=\"ez-toc-section-end\">\u003C/span>\u003C/h1>\r\n\u003Ctable width=\"630\">\r\n\u003Ctbody>\r\n\u003Ctr>\r\n\u003Ctd width=\"18\">\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">[1]\u003C/span>\u003C/td>\r\n\u003Ctd width=\"606\">\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">Lee Forest. (2019, August) www.allaboutcircuits.com. [Online]. \u003Ca href=\"https://www.allaboutcircuits.com/textbook/semiconductors/chpt-13/the-triode/\">https://www.allaboutcircuits.com/textbook/semiconductors/chpt-13/the-triode/\u003C/a>\u003C/span>\u003C/td>\r\n\u003C/tr>\r\n\u003Ctr>\r\n\u003Ctd width=\"18\">\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">[2]\u003C/span>\u003C/td>\r\n\u003Ctd width=\"606\">\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">Tarun Agarwal. (2019, June) www.elprocus.com. [Online]. \u003Ca href=\"https://www.elprocus.com/common-emitter-amplifier-circuit-working/\">https://www.elprocus.com/common-emitter-amplifier-circuit-working/\u003C/a>\u003C/span>\u003C/td>\r\n\u003C/tr>\r\n\u003Ctr>\r\n\u003Ctd width=\"18\">\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">[3]\u003C/span>\u003C/td>\r\n\u003Ctd width=\"606\">\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">Dave Moldenhauer. (2019, March) www.watelectrical.com. [Online]. \u003Ca href=\"https://www.watelectrical.com/working-and-applications-of-common-collector-amplifier/\">https://www.watelectrical.com/working-and-applications-of-common-collector-amplifier/\u003C/a>\u003C/span>\u003C/td>\r\n\u003C/tr>\r\n\u003Ctr>\r\n\u003Ctd width=\"18\">\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">[4]\u003C/span>\u003C/td>\r\n\u003Ctd width=\"606\">\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">(2019, August) www.electronics-notes.com. [Online]. \u003Ca href=\"https://www.electronics-notes.com/articles/analogue_circuits/transistor/transistor-common-base-circuit.php\">https://www.electronics-notes.com/articles/analogue_circuits/transistor/transistor-common-base-circuit.php\u003C/a>\u003C/span>\u003C/td>\r\n\u003C/tr>\r\n\u003C/tbody>\r\n\u003C/table>\r\n\u003C/div>\r\n\t\t\t\t\t\t\u003Cdiv class=\"clear\">\u003C/div>\r\n\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\u003C!-- clear for photos floats -->\r\n\t\t\t\t\t\t\u003Cdiv class=\"clear\">","uploads/2019/09/Figure-1-Common-Emitter-Amplifier-Circuit.jpg",56,"2026-04-22 01:43:51","judgment-method-of-three-types-of-amplifiers",{"id":70,"title":71,"summary":72,"content":73,"cover":74,"cateId":12,"tags":28,"views":75,"isTop":13,"status":19,"createBy":28,"createTime":67,"updateBy":28,"updateTime":31,"institutionId":28,"isPage":13,"images":28,"horizontalCover":28,"verticalCover":28,"slug":76,"siteId":15},"4e90914c43b2a6a4366","Precautions for using MOS (Metal-Oxide-Silicon transistor) tubes","Precautions for using MOS (Metal-Oxide-Silicon transistor) tubes Looking for capacitors online purchase? is a reliable marketplace to buy and learn about capacitors. Come with us for amazing deals & information.","\u003Cdiv id=\"attachment_4675\" style=\"width: 388px\" class=\"wp-caption alignnone\">\u003Cimg fetchpriority=\"high\" fetchpriority=\"high\" fetchpriority=\"high\" fetchpriority=\"high\" fetchpriority=\"high\" fetchpriority=\"high\" fetchpriority=\"high\" fetchpriority=\"high\" aria-describedby=\"caption-attachment-4675\" fetchpriority=\"high\" decoding=\"async\" class=\" wp-image-4675\" src=\"uploads/2019/09/MOS-tube.jpg\" alt=\"\" width=\"378\" height=\"378\" srcset=\"uploads/2019/09/MOS-tube.jpg 225w, uploads/2019/09/MOS-tube-150x150.jpg 150w, uploads/2019/09/MOS-tube-24x24.jpg 24w, uploads/2019/09/MOS-tube-48x48.jpg 48w, uploads/2019/09/MOS-tube-96x96.jpg 96w\" sizes=\"(max-width: 378px) 100vw, 378px\" />\u003Cp id=\"caption-attachment-4675\" class=\"wp-caption-text\">\u003C/span> \u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">MOS tube\u003C/span>\u003C/p>\u003C/div>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">A MOS transistor (also known as metal-oxide semiconductor field effect transistor) is electrically conductive by a majority of carriers’ and it is a voltage controlled electrical device. It is also called a unipolar transistor. It has three main terminals; Gate (G), Drain (D) and Source (S). The Gate voltage determines the conductivity of the device and with change of applied voltage; the MOS transistor can be used for amplifying or switching electronic signals. Its characteristics are; high input resistance (10^7~10^12Ω), low noise, low power consumption, large dynamic range, easy integration, no secondary breakdown, wide safe working area, source and drain can be interchanged, it is voltage controlled device and conduction takes place through majority carriers (n-channel: electrons and p-channel: holes).\u003C/span>\u003C/p>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">All MOS integrated circuits (including P-channel MOS, N-channel MOS, complementary MOS-CMOS integrated circuits) have an insulated gate to prevent voltage breakdown. Generally, the thickness of insulating Gate oxide layer of MOS transistor is 5 – 200 nm (about 25 nm, 50 nm, and 80 nm). In addition to the high-impedance gate of the integrated circuit, there is a resistor-diode network for protection. However, MOS devices are sensitive to voltage spikes and static electricity discharges and this can cause difficulties when we have to replace MOS devices especially complementary-symmetry metal-oxide semiconductor (CMOS) devices. Therefore, the protection network inside the device is not enough to avoid electrostatic damage (ESD) to the device. To minimize chances of damaging MOS devices during handling, special procedures have been developed to protect them from static shock. ICs are generally shipped and stored in special conductive-plastic tubes or trays. MOS devices safety is ensured by inserting ICs leas into aluminium foil or antistatic (conductive) foam – not Styrofoam. PC boards containing static sensitive devices are normally shipped in special antistatic bags, which are good for storing ICs and other computer components that could be damaged by ESD.\u003C/span>\u003C/p>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">Experiments indicate that MOS device will fail during high-voltage discharge. The device may also fail for accumulation of multiple lower voltage discharges. According to the severity of the damage, there are many forms of electrostatic damage. The most serious and most likely to occur is the complete destruction of the input or output so as to be short-circuited or open to the power supply terminal VDD, and MOS device completely loses its original function. A little bit of serious damage is intermittent failure or degradation of performance, which is even more difficult to detect. There is also some electrostatic damage that can cause the device performance to deteriorate due to increased leakage current.\u003C/span>\u003C/p>\r\n\u003Ch1>\u003Cspan style=\"font-size: 14pt; font-family: 'Trebuchet MS', Geneva;\">\u003Cstrong>MOS tube definition\u003C/strong>\u003C/span>\u003C/h1>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">MOS tube is a MOS transistor or a metal-insulator-semiconductor. The source (S) and drain (D) of MOS tube can be reversed. They are all N-type regions formed in the P-type backgate. And in most cases, the two zones are same even if two ends are reversed. And it will not affect performance of the device. Such devices are considered to be symmetrical. MOS tube is a voltage-driven high-current type device, which is widely used in circuits, especially power systems. MOS tubes have some characteristics that should be paid special attention in practical applications.\u003C/span>\u003C/p>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">MOS devices have body diodes formed by pn junction between source (S) and drain (D), and also known as parasitic diodes or an internal diode, are found in a single MOS device between the drain and the source. They are not used in integrated circuit lithography (standard method of printed circuit board (PCB), and microprocessor fabrication). This diode can provide reverse protection and freewheeling during high current drive and inductive loads. The forward voltage drop is about 0.7~1V. Because of this diode, the MOS device can’t simply see the function of a switch in the circuit. For example, in the charging circuit, after the charging is completed, the battery will reverse when the supply power is removed; this is usually the result we do not want to see. The general solution is to add a diode to prevent reverse power supply. This can be done, but the characteristics of the diode must have a forward voltage of 0.6~1V. Down, in the case of high currents, the heat is severe, and at the same time, the energy is wasted, and the energy efficiency of the whole machine is low. Another method is to add a back-to-back MOS tube and use the low on-resistance of the MOS tube to achieve energy saving. Another common application of this characteristic is low-voltage synchronous rectification. In practice, the body diode is a result of manufacturing process, and it is in between the source and drain and on an n-channel device, if the drains fall below voltage on the source, current will flow from source to drain.\u003C/span>\u003C/p>\r\n\u003Ch1>\u003Cspan style=\"font-size: 14pt; font-family: 'Trebuchet MS', Geneva;\">\u003Cstrong>Precautions\u003C/strong>\u003C/span>\u003C/h1>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">After the MOS tube is turned on, it has no directionality and in this state of operation, it behaves like a wire. It has a resistance characteristic only and there is no conduction voltage drop in this case. Usually, the saturation level on resistance is several to several tens of milliohms (mΩ). MOS tube is also non-directional therefore allowing both DC and AC currents to pass through.\u003C/span>\u003C/p>\r\n\u003Ch1>\u003Cspan style=\"font-size: 14pt; font-family: 'Trebuchet MS', Geneva;\">\u003Cstrong>Precautions for using MOS tubes\u003C/strong>\u003C/span>\u003C/h1>\r\n\u003Cul>\r\n\u003Cli>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">In order to safely use the MOS tube, the limit value of the dissipated power of the tube, the maximum drain-source voltage, the maximum gate-source voltage, and the maximum current set values cannot be exceeded in the manufacturing design.\u003C/span>\u003C/li>\r\n\u003C/ul>\r\n\u003Cul>\r\n\u003Cli>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">When using various types of MOS tubes, they must be connected to the circuit in strict accordance with the required bias, and the polarity of the MOS tube bias should be observed. For example, the junction between the source and drain of the junction MOS transistor is a PN junction, the gate of the N-channel transistor can be positively biased; the gate of the P-channel transistor can be negatively biased.\u003C/span>\u003C/li>\r\n\u003C/ul>\r\n\u003Cul>\r\n\u003Cli>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">Since the input impedance of the MOS tube is extremely high, the lead pin must be short-circuited during transportation and storage, and the metal shield package should be used to prevent the external induced potential from penetrating the gate. In particular, it is important to note that the MOS tube cannot be placed in a plastic box. It should be placed in a metal box e.g aluminium foil when it is stored, and the tube should be protected from moisture.\u003C/span>\u003C/li>\r\n\u003C/ul>\r\n\u003Cul>\r\n\u003Cli>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">In order to prevent the gate breakdown of the MOS tube, all test instruments, worktables, soldering irons, and the circuit itself must be well grounded; when the pins are soldered, the source is soldered first; before being connected to the circuit, All the lead ends of MOS tube are kept short-circuited with each other, and the short-circuit material is removed after soldering; when removing MOS tube from the component holder, the grounding of the human body should be adhered to. The advanced gas-fired electric soldering iron is convenient for soldering MOS tubes and ensures safety. When the power is not turned off, it is absolutely impossible to insert or remove the tubes from the circuit. The above safety measures must be taken care of when using MOS tubes.\u003C/span>\u003C/li>\r\n\u003C/ul>\r\n\u003Cul>\r\n\u003Cli>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">When installing the MOS tube, pay attention to the location of the installation to avoid heating elements; to prevent the vibration of MOS tube, it is necessary to fasten MOS tube; when the lead is bent, it should be larger than the root size of 5 mm. Therefore it is important to prevent bending of the pins and causing air leaks.\u003C/span>\u003C/li>\r\n\u003C/ul>\r\n\u003Cul>\r\n\u003Cli>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">When using a VMOS tube, a suitable heat sink must be added. Taking VNF306 as an example, the maximum power can reach 30W after it is equipped with a 140×140×4 (mm) heat sink.\u003C/span>\u003C/li>\r\n\u003C/ul>\r\n\u003Cul>\r\n\u003Cli>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">After the multiple MOS tubes are connected in parallel, the high-frequency characteristics of the amplifier are deteriorated due to the corresponding increase in the inter-electrode capacitance and the distributed capacitance and high-frequency parasitic oscillation of the amplifier is easily caused by the feedback. For this reason, the parallel composite MOS tubes generally do not exceed four, and the anti-parasitic oscillation resistors are connected in series to the base or the gate of each tube.\u003C/span>\u003C/li>\r\n\u003C/ul>\r\n\u003Cul>\r\n\u003Cli>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">The gate-source voltage of the junction MOS transistor cannot be reversed and can be saved in the open state. When the insulated gate MOS transistor is not used, the electrodes must be short-circuited since its input resistance is very high, so as to avoid an external electric field. The MOS tube is damaged by such action.\u003C/span>\u003C/li>\r\n\u003C/ul>\r\n\u003Cul>\r\n\u003Cli>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">When soldering, the soldering iron shell must be equipped with an external grounding wire to prevent damage to MOS tube due to electrification of the soldering iron. For a small amount of soldering, you can also solder the soldering iron after removing the plug or cutting off the power. Especially when soldering insulated gate MOS transistors, they should be soldered in the order of source-drain-gate, and the power should be cut off.\u003C/span>\u003C/li>\r\n\u003C/ul>\r\n\u003Cul>\r\n\u003Cli>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">When soldering with 25W soldering iron, it should be fast. If soldering with 45~75W soldering iron, use the tweezers to clamp the root of the pin to help dissipate heat. The junction MOS tube can qualitatively check the quality of the MOS tube by using the table resistance file (check the resistance between the forward and reverse resistance of each PN junction and the drain source), and the insulated gate field effect tube cannot be inspected with a multimeter, and the tester must be used. Moreover, the short-circuit line of each electrode can be removed after the tester is connected. When it is removed, it should be short-circuited and then removed. The key is to avoid the gate hanging.\u003C/span>\u003C/li>\r\n\u003C/ul>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">When input impedance is a factor to consider during design process, it is necessary to take moisture-proof measures to avoid lowering the input resistance of the MOS tube due to temperature influence. If a four-lead MOS transistor is used, its substrate leads should be grounded. The ceramic packaged of the MOS tube has photosensitive properties and should be protected from light.\u003C/span>\u003C/p>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">For power MOS tubes, there must be good heat dissipation conditions. Because the power MOS tube is used under high load conditions, it is necessary to design a sufficient heat sink to ensure that the temperature of MOS tube casing does not exceed the rated value, so that the MOS device can work stably and reliably for a long time.\u003C/span>\u003C/p>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">In short, to ensure use of MOS tubes safely, there are many precautions to be adhered to, and the safety measures adopted are various. The vast number of professional and technical personnel required, especially the vast number of electronic enthusiasts, must proceed according to their actual conditions. Take practical measures to use MOS tubes safely and effectively.\u003C/span>\u003C/p>\r\n\u003C/div>\r\n\t\t\t\t\t\t\u003Cdiv class=\"clear\">\u003C/div>\r\n\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\u003C!-- clear for photos floats -->\r\n\t\t\t\t\t\t\u003Cdiv class=\"clear\">","uploads/2019/09/MOS-tube.jpg",146,"precautions-for-using-mos-metal-oxide-silicon-transistor-tubes",1776841284274]