[{"data":1,"prerenderedAt":77},["ShallowReactive",2],{"post-28f890189f2edc28ec8":3,"recom-28f890189f2edc28ec8":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},"Both dithering and spread spectrum modulation can be effective in reducing the impact of noise and interference on oscillating frequencies.",1776841319749,"Ten Daily Electronic Common Sense-Section-174","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/2023/05/QQ图片20230328153543-650x303.jpg\" alt=\"\" class=\"wp-image-14745\" width=\"839\" height=\"391\" srcset=\"uploads/2023/05/QQ图片20230328153543-650x303.jpg 650w, uploads/2023/05/QQ图片20230328153543-400x186.jpg 400w, uploads/2023/05/QQ图片20230328153543-250x117.jpg 250w, uploads/2023/05/QQ图片20230328153543-768x358.jpg 768w, uploads/2023/05/QQ图片20230328153543-150x70.jpg 150w, uploads/2023/05/QQ图片20230328153543-800x373.jpg 800w, uploads/2023/05/QQ图片20230328153543.jpg 869w\" sizes=\"(max-width: 839px) 100vw, 839px\" />\u003C/figure>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What are the four different modulation formats that fiber optic sensors can be divided into?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>Fiber optic sensors are devices that use optical fibers to measure various physical, chemical, or environmental parameters. These sensors can be divided into several modulation formats based on the way they operate and the principles they utilize to measure the target parameter. The four main modulation formats for fiber optic sensors are:\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>\u003Cstrong>Intensity Modulation:\u003C/strong> In this format, the measured parameter affects the intensity of the light propagating through the fiber. The intensity of the light is modulated by changes in the parameter being measured, such as strain, temperature, pressure, or refractive index. The variations in intensity are then correlated with the changes in the parameter. For example, a strain sensor might use a fiber Bragg grating to modulate the light’s intensity based on strain-induced changes in the grating’s periodicity.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Phase Modulation:\u003C/strong> In phase modulation, the phase of the light signal traveling through the fiber is modulated by the target parameter. Changes in the measured parameter result in alterations in the phase of the light, which can be detected and correlated to the parameter’s value. Interferometric sensors, such as Mach-Zehnder interferometers or Fabry-Perot interferometers, often employ phase modulation for sensing parameters like pressure or temperature.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Wavelength Modulation:\u003C/strong> This format involves changing the wavelength of the light signal in response to variations in the measured parameter. Fiber Bragg gratings are commonly used for wavelength modulation sensors. When strain, temperature, or other environmental factors change, the grating’s spacing or refractive index changes, leading to a shift in the reflected wavelength, which can be used to infer the parameter’s value.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Polarization Modulation:\u003C/strong> In polarization modulation sensors, the polarization state of light is modulated based on the parameter being measured. Changes in the parameter alter the polarization of the light signal as it travels through the fiber. These changes can be detected and correlated to the parameter’s value. Polarimetric sensors are a common example of this format, with applications in strain sensing and other environmental measurements.\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>These different modulation formats offer distinct advantages and disadvantages depending on the specific application and requirements. The choice of modulation format depends on factors such as the sensitivity needed, the measurement range, the accuracy required, and the environmental conditions the sensor will operate in.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What are the characteristics of the Spartan-2E series?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>The Spartan-2E series refers to a family of field-programmable gate array (FPGA) devices developed by Xilinx. The Spartan-2E FPGAs are part of the larger Spartan FPGA family and were designed to offer a balance between performance, cost, and power consumption for a range of applications. Please note that my knowledge is based on information available up until September 2021, and I do not have specific details about any updates or developments beyond that date. Here are some general characteristics of the Spartan-2E series:\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>\u003Cstrong>Logic Capacity:\u003C/strong> The Spartan-2E FPGAs are known for their relatively modest logic capacity compared to more advanced FPGA families. They were designed to cater to mid-range applications where moderate logic density is sufficient.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Configurable Logic Blocks (CLBs):\u003C/strong> Like other FPGAs, Spartan-2E devices consist of configurable logic blocks (CLBs) that can be programmed to implement various digital logic functions. These CLBs contain lookup tables (LUTs) for logic implementation, flip-flops for storage, and other configurable elements.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>I/O Capabilities:\u003C/strong> The Spartan-2E series offers a range of I/O pins that can be used to interface with external devices. The number and types of I/O pins available depend on the specific device within the series.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Clock Management:\u003C/strong> Spartan-2E FPGAs include clock management resources such as Digital Clock Managers (DCMs) that provide flexible clocking options, phase shifting, and frequency multiplication/division.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Memory Resources:\u003C/strong> These FPGAs include block RAM (BRAM) modules that can be used for implementing on-chip memory. The amount of available memory varies depending on the specific device.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Configuration:\u003C/strong> Like other FPGAs, Spartan-2E devices are configured using bitstreams that define the functionality of the FPGA’s logic elements and interconnections. These bitstreams are typically generated using design tools provided by Xilinx.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Power Consumption:\u003C/strong> The Spartan-2E series aimed to strike a balance between performance and power consumption. While they may not have the lowest power consumption compared to more modern FPGA families, they offered reasonable power efficiency for their time.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Applications:\u003C/strong> Spartan-2E FPGAs were used in a variety of applications, including digital signal processing, communication systems, industrial control, and more.\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>It’s important to note that the Spartan-2E series is older technology, and Xilinx has released more advanced FPGA families since then with greater capabilities and performance. If you’re considering using FPGAs for a project, it’s recommended to check the most recent information available from Xilinx or other FPGA manufacturers to find a series that best suits your requirements.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What is the purpose of the A/D data register?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>An A/D (Analog-to-Digital) data register, often simply referred to as an ADC register, is a component found in microcontrollers, microprocessors, and other digital devices that interface with analog sensors or signals. Its primary purpose is to hold the digital representation of the analog voltage or signal that has been converted by an ADC.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>Here’s how it works:\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>\u003Cstrong>Analog-to-Digital Conversion:\u003C/strong> Analog sensors and signals produce continuous voltage levels that represent physical quantities such as temperature, pressure, light intensity, etc. However, digital systems, including microcontrollers and processors, operate with discrete digital values. To process analog signals, they need to be converted into digital values using ADCs.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>ADC Conversion:\u003C/strong> The ADC converts the analog voltage into a digital value that can be processed by the digital circuitry. This conversion involves sampling the analog signal at specific intervals and quantizing the voltage levels into digital bits.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Storage in the A/D Data Register:\u003C/strong> After the conversion process, the digital value produced by the ADC is stored in the A/D data register. This register is a specific memory location within the digital device’s memory space dedicated to holding the converted digital value.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Access and Processing:\u003C/strong> Once the digital value is in the A/D data register, the digital device’s software can access it. The software can read the value from the register and perform further processing, calculations, decision-making, or any other required actions based on the converted data.\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>The A/D data register serves as a temporary storage location for the converted analog data before it’s used by the digital system. This separation between the analog world (represented by the sensor’s voltage) and the digital world (where the processing occurs) is a fundamental aspect of interfacing analog and digital systems.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>It’s worth noting that the naming and usage of this register might vary depending on the specific microcontroller or microprocessor architecture you are working with. Different manufacturers or architectures might use different terminology or approaches, but the fundamental concept of converting analog signals to digital values and storing them in a register for processing remains consistent.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What are the ways in which message queues work?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>Message queues are a form of inter-process communication (IPC) used in computer systems and software applications to enable communication and data exchange between different processes, threads, or components. Message queues operate based on the producer-consumer paradigm, where one process or thread produces data and places it into the queue, and another process or thread consumes the data from the queue. There are various ways in which message queues work, depending on the implementation and the specific features provided by the messaging system. Here are some common ways in which message queues operate:\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>\u003Cstrong>Queue-Based Communication:\u003C/strong>\r\n\u003Cul>\r\n\u003Cli>In a basic message queue system, a producer process/thread generates messages containing data or instructions.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>The producer places the messages in the message queue, which acts as a buffer or storage for these messages.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>The consumer process/thread retrieves messages from the queue and processes the data or performs the required actions.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>This approach ensures that communication is decoupled, allowing the producer and consumer to work independently and at their own speeds.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>FIFO (First-In-First-Out) Principle:\u003C/strong>\r\n\u003Cul>\r\n\u003Cli>Most message queues follow the FIFO principle, meaning that the order in which messages are placed in the queue is the order in which they are consumed.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>The oldest message in the queue is processed first by the consumer.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Blocking and Non-Blocking Operations:\u003C/strong>\r\n\u003Cul>\r\n\u003Cli>Message queue operations can be blocking or non-blocking.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>In blocking operations, if a consumer tries to read from an empty queue, it waits until a message is available. Similarly, if a producer tries to add to a full queue, it waits until space becomes available.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Non-blocking operations return immediately, even if the queue is empty or full. This can be useful for scenarios where waiting is not desirable.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Message Priority:\u003C/strong>\r\n\u003Cul>\r\n\u003Cli>Some message queue systems support message prioritization.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Messages with higher priority are processed before messages with lower priority, regardless of their order in the queue.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Synchronous and Asynchronous Communication:\u003C/strong>\r\n\u003Cul>\r\n\u003Cli>Message queues can facilitate both synchronous and asynchronous communication.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>In synchronous communication, the producer waits for the consumer to process the message and potentially respond before continuing.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>In asynchronous communication, the producer doesn’t wait for immediate processing by the consumer and can continue its own work.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Buffering and Flow Control:\u003C/strong>\r\n\u003Cul>\r\n\u003Cli>Message queues provide buffering capabilities, allowing producers and consumers to operate at different rates without causing data loss.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Buffering helps manage the flow of data between fast and slow processes, preventing data overload or starvation.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Persistence:\u003C/strong>\r\n\u003Cul>\r\n\u003Cli>Some message queue systems offer message persistence, where messages are stored even if the system or application restarts.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>This ensures that important messages are not lost in the event of a failure.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Message Format and Metadata:\u003C/strong>\r\n\u003Cul>\r\n\u003Cli>Messages placed in the queue typically have associated metadata, including identifiers, timestamps, and possibly message types.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>The queue system may also provide serialization and deserialization mechanisms to handle message data in a consistent format.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>The specifics of how message queues work can vary based on the messaging system or framework being used. Popular message queue technologies include RabbitMQ, Apache Kafka, Amazon SQS, and various others, each offering different features and trade-offs to meet specific communication requirements.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What is the format of the instruction?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>The format of an instruction refers to the structure and organization of a machine-level instruction in a computer’s instruction set architecture (ISA). An instruction is a binary representation of a command that the computer’s central processing unit (CPU) can execute. Different ISAs can have varying instruction formats, but there are several common formats that instructions tend to follow. The format of an instruction typically includes fields that convey information about the operation to be performed and the operands involved. Here are some common instruction formats:\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>\u003Cstrong>Single Accumulator Format:\u003C/strong>\r\n\u003Cul>\r\n\u003Cli>This format is used by some early computers and microcontrollers.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>It has a single accumulator register that is implicitly used for operations.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>The instruction only needs an opcode field to specify the operation to be performed.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Example: ADD, SUB, MUL\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Memory-Register Format:\u003C/strong>\r\n\u003Cul>\r\n\u003Cli>This format involves an opcode field, one or more register fields, and a memory address field.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>The registers specified in the instruction participate in the operation.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Example: MOV R1, [A]\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Register-Register Format:\u003C/strong>\r\n\u003Cul>\r\n\u003Cli>In this format, an opcode field and multiple register fields are present.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>The operation is performed between two registers specified in the instruction.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Example: ADD R1, R2, R3\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Immediate Format:\u003C/strong>\r\n\u003Cul>\r\n\u003Cli>This format includes an opcode field, a register field, and an immediate value field.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>The immediate value is a constant that is used in the operation.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Example: ADD R1, R2, #5\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Jump Format:\u003C/strong>\r\n\u003Cul>\r\n\u003Cli>Jump instructions have an opcode field and a target address field.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>They are used for branching and altering the program flow.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Example: JMP LABEL\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Complex Format:\u003C/strong>\r\n\u003Cul>\r\n\u003Cli>Some ISAs have more complex instruction formats with multiple opcode fields, multiple register fields, immediate values, and memory address fields.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>These formats allow for a wide range of operations and operand types.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Example: ARM Thumb instruction set\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Variable-Length Format:\u003C/strong>\r\n\u003Cul>\r\n\u003Cli>Some ISAs use variable-length instructions, where the length of the instruction can vary depending on the operation and operands.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>This allows for a more compact encoding but can complicate instruction fetching.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Example: x86 instruction set\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Vector Format:\u003C/strong>\r\n\u003Cul>\r\n\u003Cli>Modern processors often support SIMD (Single Instruction, Multiple Data) operations.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Vector instructions operate on multiple data elements in parallel.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>These instructions have special formats to handle vector registers and data.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>It’s important to note that the actual binary structure of instructions can vary significantly between different architectures and instruction sets. The format of an instruction is defined by the ISA and dictates how the CPU interprets and executes the instruction. Understanding the instruction format is essential for software developers and hardware designers working with low-level programming and computer architecture.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What are the parts for contact IC cards?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>Contact Integrated Circuit (IC) cards, commonly known as smart cards, are a type of plastic card embedded with an integrated circuit chip. These cards are widely used for various applications, including identification, authentication, payment systems, access control, and more. A contact IC card consists of several essential components that work together to enable communication and data exchange between the card and external devices. The main components of a contact IC card are as follows:\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>\u003Cstrong>Plastic Card Body:\u003C/strong> The physical body of the smart card is typically made of plastic, providing durability and protection for the embedded components.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Integrated Circuit (IC) Chip:\u003C/strong> The heart of the contact IC card is the integrated circuit chip. This chip contains a microprocessor or microcontroller, memory, and other circuitry for processing data and executing instructions. The chip is responsible for executing commands, storing data, and performing cryptographic operations.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Contact Pads:\u003C/strong> These are metallic contacts on the surface of the card that establish a physical connection between the IC chip and external devices. When the card is inserted into a card reader, these contact pads provide the electrical interface for communication.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Memory:\u003C/strong> The IC chip includes various types of memory, such as Read-Only Memory (ROM), Random-Access Memory (RAM), and Electrically Erasable Programmable Read-Only Memory (EEPROM). ROM contains the card’s operating system and application code, while RAM is used for temporary data storage during card operations. EEPROM is non-volatile memory that stores user data, cryptographic keys, and other persistent information.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Microprocessor/Microcontroller:\u003C/strong> The microprocessor or microcontroller on the IC chip is responsible for executing commands, processing data, and controlling the card’s operations. It acts as the card’s “brain.”\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Clock and Oscillator:\u003C/strong> A clock circuit generates the necessary timing signals for the IC chip’s operations. This ensures that operations occur at the correct timing and synchronization.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Security Features:\u003C/strong> Many contact IC cards include security features to protect the stored data and prevent unauthorized access. These features can include hardware-based encryption, secure storage for cryptographic keys, and secure execution environments.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Application-Specific Data:\u003C/strong> Contact IC cards can store various types of application-specific data, depending on their intended use. For example, a payment card may store account information, while an access control card may store user credentials.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Operating System:\u003C/strong> The card’s operating system manages the execution of commands, memory access, and communication with external devices. It provides a standardized interface for accessing the card’s capabilities.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Electrical Protection:\u003C/strong> Contact IC cards may include components to protect against electrical surges, electromagnetic interference, and other external factors that could damage the IC chip.\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>When a contact IC card is inserted into a card reader, the contact pads establish an electrical connection, allowing the card reader to communicate with the IC chip. The reader sends commands to the card, and the card responds by executing the requested operations or providing the requested data. The communication follows specific protocols defined by the card’s operating system and supported by the reader.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What are the three steps that the control process of a computer control system usually comes down to?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>The control process of a computer-based control system typically involves three fundamental steps: measurement, comparison, and action. These steps are part of a feedback control loop that continuously monitors a system’s performance, compares it to a desired state, and makes adjustments as necessary to maintain or achieve the desired outcome. Here’s a breakdown of each step:\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>\u003Cstrong>Measurement:\u003C/strong> In the measurement step, the control system acquires data from sensors or measurements that provide information about the current state or performance of the controlled system. These sensors capture relevant parameters such as temperature, pressure, position, velocity, or any other relevant variables.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Comparison:\u003C/strong> Once the measurement data is obtained, the control system compares the actual measured values to a reference or desired setpoint. The reference value represents the desired state or behavior that the system should achieve. The comparison determines the error, which is the difference between the measured value and the desired setpoint.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Action:\u003C/strong> Based on the comparison between the measured value and the desired setpoint, the control system takes corrective action to minimize the error and bring the system closer to the desired state. This action involves applying control signals or commands to actuators, devices that manipulate the system’s behavior. Actuators can change system parameters such as speed, position, temperature, or any other controlled variables.\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>The control loop continuously iterates through these three steps to maintain the controlled system’s performance within acceptable limits and to achieve the desired outcomes. The goal is to regulate the system’s behavior, correct deviations from the desired state, and adapt to changes in operating conditions.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>This feedback control process is a fundamental concept in various fields, including engineering, automation, robotics, process control, and more. It enables precise and efficient control of systems in various applications, from temperature regulation in HVAC systems to the autonomous control of vehicles.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What function blocks are each macro unit made up of?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>Each macrocell consists of three functional blocks: a logic array, a product term selection matrix, and a programmable flip-flop.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What are the characteristics of Altera’s MAX II?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>\u003Cstrong>Logic Capacity:\u003C/strong> MAX II devices come in various sizes, offering a range of logic capacity to accommodate different levels of complexity in digital designs.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Low Power Consumption:\u003C/strong> One of the key features of MAX II devices is their low power consumption. They are designed to be power-efficient, making them suitable for battery-powered or power-sensitive applications.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Flash-Based Configuration:\u003C/strong> MAX II devices use non-volatile flash memory for configuration storage. This means that the configuration data is retained even when the device loses power, allowing for “instant-on” operation when power is restored.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>I/O Flexibility:\u003C/strong> MAX II devices offer a variety of I/O standards and options, allowing designers to interface with different types of external devices and systems.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Embedded Memory:\u003C/strong> Some MAX II devices include on-chip memory resources such as M9K memory blocks, which can be used for implementing memory elements in your design.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>MultiVolt I/O:\u003C/strong> Some members of the MAX II family offer support for multi-voltage I/O standards, which allows interfacing with devices operating at different voltage levels.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>In-System Programming (ISP):\u003C/strong> MAX II devices support in-system programming, enabling users to reconfigure the devices while they are in the application circuit, without the need for external programmers.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Hierarchical Design Support:\u003C/strong> MAX II devices support hierarchical design methodologies, allowing designers to break down complex designs into manageable modules.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Design Security:\u003C/strong> Some MAX II devices offer security features like JTAG security and user-level security to protect your intellectual property and sensitive data.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Development Tools:\u003C/strong> Altera provides design software tools, such as Quartus II, that allow designers to compile, simulate, and program MAX II devices.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Applications:\u003C/strong> MAX II devices are used in a variety of applications including consumer electronics, industrial control systems, communications equipment, automotive electronics, and more.\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>Keep in mind that the specific features and characteristics of MAX II devices may vary based on the particular model and package you are considering. If you’re considering using MAX II devices for a project, it’s recommended to consult the latest documentation and resources from Altera (now part of Intel) to get the most up-to-date and accurate information.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What are the two methods of oscillating frequency versus noise reduction?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>The two methods for reducing noise in an oscillating frequency are dithering and spread spectrum modulation. These methods are often used in electronic circuits to mitigate the effects of electromagnetic interference (EMI) and improve the overall performance of oscillators, particularly in applications where low noise and stable frequency are essential.\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>\u003Cstrong>Dithering:\u003C/strong> Dithering involves intentionally introducing a small, random noise signal to the control input of an oscillator. This noise disrupts the regular frequency oscillation of the oscillator, causing its frequency to fluctuate slightly around the desired frequency. The advantage of dithering is that it helps spread the energy of the oscillator’s signal over a wider frequency range, making it less susceptible to interference from narrowband noise sources. However, the output frequency distribution becomes broader due to the noise injection. This technique is commonly used in applications where reducing phase noise is critical.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>Spread Spectrum Modulation:\u003C/strong> Spread spectrum modulation is a technique where the frequency of the oscillator is modulated by a pseudorandom sequence. This modulation spreads the energy of the oscillator’s output signal across a broader frequency band. There are two main types of spread spectrum modulation: direct sequence spread spectrum (DSSS) and frequency hopping spread spectrum (FHSS).\r\n\u003Cul>\r\n\u003Cli>\u003Cstrong>DSSS:\u003C/strong> In DSSS, the carrier frequency of the oscillator is modulated directly by a pseudo-noise sequence. This technique increases the bandwidth of the signal, which helps in reducing the effects of interference and noise. DSSS is often used in wireless communication systems.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>\u003Cstrong>FHSS:\u003C/strong> In FHSS, the carrier frequency of the oscillator is rapidly changed over a sequence of predefined frequencies. This hopping behavior makes it difficult for external sources of interference to affect the communication link consistently. FHSS is used in applications where robustness against interference is crucial, such as wireless networks and Bluetooth.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>Both dithering and spread spectrum modulation can be effective in reducing the impact of noise and interference on oscillating frequencies. The choice between these methods depends on the specific requirements of the application and the trade-offs between frequency stability, noise reduction, and signal bandwidth.\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/2023/05/QQ图片20230328153543-650x303.jpg",1776793309000,"20db6653d7e85fded62",0,"Admin","2028706543895019522","28f890189f2edc28ec8","ten-daily-electronic-common-sense-section-174",279,1,"/uploads/2023/05/QQ图片20230328153543-650x303.jpg","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",1776841312079]