[{"data":1,"prerenderedAt":77},["ShallowReactive",2],{"post-6e6a5077f839641679a":3,"recom-6e6a5077f839641679a":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-157 Looking for capacitors online purchase? is a reliable marketplace to buy and learn about capacitors. Come with us for amazing deals & information.",1776841290429,"Ten Daily Electronic Common Sense-Section-157","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-e1684917470170-650x303.png\" alt=\"\" class=\"wp-image-14612\" width=\"839\" height=\"391\" srcset=\"uploads/2023/01/01-e1684917470170-650x303.png 650w, uploads/2023/01/01-e1684917470170-400x186.png 400w, uploads/2023/01/01-e1684917470170-250x117.png 250w, uploads/2023/01/01-e1684917470170-768x358.png 768w, uploads/2023/01/01-e1684917470170-150x70.png 150w, uploads/2023/01/01-e1684917470170-800x373.png 800w, uploads/2023/01/01-e1684917470170.png 869w\" sizes=\"(max-width: 839px) 100vw, 839px\" />\u003C/figure>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>An example of a representative embedded system?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>One representative example of an embedded system is a “Smart Thermostat.” A smart thermostat is a device used to control and regulate the temperature of heating, ventilation, and air conditioning (HVAC) systems in homes or commercial buildings. It is an embedded system because it incorporates a microcontroller or microprocessor along with various sensors and actuators to perform its intended functions. Here’s an overview of the key features and components of a smart thermostat as an embedded system:\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>Microcontroller/Microprocessor: The heart of the smart thermostat is a microcontroller or microprocessor that serves as the central processing unit. It executes the embedded software and manages the overall operation of the thermostat.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Temperature Sensors: Smart thermostats typically include built-in temperature sensors or external sensors to monitor the ambient temperature of the room or the building.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Humidity Sensor: Some smart thermostats also incorporate a humidity sensor to measure the moisture level in the air.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>User Interface: A user interface is provided for users to interact with the smart thermostat. This can be in the form of buttons, touchscreens, or even smartphone apps that allow users to set temperature preferences, schedule heating/cooling periods, and access other features.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Communication Interface: Embedded systems like smart thermostats often have communication interfaces like Wi-Fi, Bluetooth, Zigbee, or others to connect to home automation systems or the internet for remote control and monitoring.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Connectivity: Smart thermostats can connect to the home Wi-Fi network to enable remote control and access through smartphone apps or web portals.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Memory: The embedded system requires memory to store the program code, settings, and user preferences.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Real-Time Clock (RTC): An RTC is often included to keep track of the current time and date, which is essential for scheduling heating/cooling periods and automation.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Actuators: Smart thermostats use relays or other actuators to control the heating and cooling systems, turning them on or off as needed to maintain the desired temperature.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Energy Efficiency and Learning Algorithms: Many modern smart thermostats incorporate advanced algorithms to learn user preferences and optimize heating and cooling patterns for energy efficiency.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Security: As smart thermostats are connected devices, security features like encryption and authentication are essential to protect user data and prevent unauthorized access.\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>Smart thermostats are just one example of the wide range of embedded systems found in various applications, including consumer electronics, automotive systems, industrial automation, medical devices, and more. These embedded systems bring intelligence and functionality to devices and products, making them more capable, efficient, and user-friendly.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What are the functions of the AD603 pin?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>The AD603 is an operational amplifier (op-amp) with a high-performance, low-noise, and wideband variable gain amplifier (VGA) function. It is designed by Analog Devices for a variety of applications, including communication systems, instrumentation, and signal processing. The AD603 IC has several pins, each serving specific functions. Here are the functions of some key pins on the AD603:\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>VPOS (Pin 1): VPOS is the positive power supply pin for the AD603. It provides the positive power voltage required for the IC’s operation.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>VNEG (Pin 2): VNEG is the negative power supply pin for the AD603. It provides the negative power voltage required for the IC’s operation.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>GND (Pin 3): The GND pin is connected to the ground reference of the circuit.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>INHI (Pin 4): INHI is the high-level differential input pin for the op-amp. It is one of the inputs to the variable gain amplifier.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>INLO (Pin 5): INLO is the low-level differential input pin for the op-amp. It is the other input to the variable gain amplifier.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>VSET (Pin 6): VSET is the gain-setting control voltage input for the variable gain amplifier. By applying a voltage to this pin, the user can control the gain of the amplifier.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>GAIN (Pin 7): The GAIN pin is used to set the overall gain mode of the AD603. By tying this pin to the supply voltage or ground, the user can select between a high-gain mode or low-gain mode.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>AGC (Pin 8): AGC stands for Automatic Gain Control. The AGC pin is used to enable or disable the automatic gain control feature of the AD603. When AGC is disabled, the gain is set based on the voltage applied to the VSET pin.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>VFILT (Pin 9): VFILT is the filter control pin for the output filter. It is used to select the filter bandwidth based on the application requirements.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>NC (Pin 10): NC stands for No Connection. The NC pin is not internally connected and is left unconnected during circuit implementation.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>VOUT (Pin 11): VOUT is the output pin of the AD603. The amplified signal appears at this pin.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>VS (Pin 12): VS is the supply voltage pin for the output buffer amplifier.\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>It’s essential to consult the datasheet of the AD603 for a complete understanding of the pin functions, electrical characteristics, and application circuit examples for proper usage of the IC in specific designs.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What are the main resource configurations of the OK6410 evaluation board?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>As of my last knowledge update in September 2021, the OK6410 evaluation board is an ARM-based development board designed by FriendlyARM for evaluating and prototyping with Samsung’s S3C6410 processor. The OK6410 board features various resources and interfaces to support a wide range of applications. The main resource configurations of the OK6410 evaluation board include:\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>Samsung S3C6410 Processor: The board is built around the Samsung S3C6410 ARM11 processor, which is a powerful and versatile system-on-chip (SoC) with various integrated peripherals.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>RAM: The OK6410 evaluation board typically comes with onboard DDR RAM, providing a decent amount of memory for running applications and storing data.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Flash Memory: The board usually includes a NOR flash for storing the bootloader and other essential system code.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Connectivity: The OK6410 board supports various connectivity options, including USB 2.0 Host and USB 2.0 OTG ports for connecting USB devices and acting as a USB host, respectively. It may also include Ethernet (RJ45) for networking capabilities.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Display and Multimedia: The board is equipped with an LCD connector for connecting TFT-LCD displays, allowing developers to work with graphical user interfaces. It also has TV-out (composite video) for displaying content on a TV or monitor.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Touchscreen: The OK6410 evaluation board often includes a touchscreen controller interface, enabling the use of touch-enabled displays.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Audio: The board has audio input and output interfaces, supporting audio playback and recording capabilities.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Expansion Headers: The OK6410 board features various expansion headers, allowing access to the GPIO (General Purpose Input/Output) pins for connecting additional peripherals and custom circuitry.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>UART and Debugging: The board typically has UART (serial communication) interfaces for debugging and communication with other devices.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Power Supply: The board is powered through a standard DC power supply or USB power, providing the required voltages to the components on the board.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>User Interface: The OK6410 board may include buttons, LEDs, and other user interface elements for easy interaction and testing of hardware and software functionalities.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Operating System Support: The OK6410 board supports various operating systems, including Linux and Windows CE, providing flexibility for developers to choose their preferred OS for application development.\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>It’s important to note that hardware configurations and specifications may vary depending on the specific version or revision of the OK6410 evaluation board. For the most up-to-date and detailed information, I recommend consulting the official documentation or datasheets provided by FriendlyARM for the OK6410 board.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What are the system functions of μC/OS-II?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>μC/OS-II (MicroC/OS-II) is a real-time operating system (RTOS) kernel developed by Jean J. Labrosse and maintained by Micrium Inc. It is designed to provide preemptive multitasking, inter-process communication, and other essential services for embedded systems and real-time applications. The system functions of μC/OS-II include:\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>Task Management: μC/OS-II allows the creation, deletion, and management of multiple tasks. Tasks are independent threads of execution, each with its own stack and priority. The kernel provides mechanisms for task scheduling, context switching, and time slicing to ensure proper execution of tasks.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Task Synchronization: μC/OS-II supports various synchronization mechanisms to coordinate the execution of tasks. This includes semaphores, mutexes, and event flags, which are used to manage access to shared resources, prevent race conditions, and implement mutual exclusion.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Task Communication: The RTOS kernel offers inter-process communication mechanisms like message queues and mailboxes, enabling tasks to exchange data and messages in a synchronized and thread-safe manner.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Time Management: μC/OS-II provides time-related services, including support for software timers and time delay functions. Software timers allow tasks to be scheduled at specific intervals, while time delay functions enable tasks to suspend their execution for a specified period.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Memory Management: The RTOS kernel includes memory management services to allocate and deallocate memory dynamically during the runtime of the system. It provides memory pool management and memory partitioning, which allows tasks to request and release memory blocks efficiently.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Event Handling: μC/OS-II supports event-driven programming through the use of event flags and event groups. Tasks can wait for specific events to occur and respond accordingly when signaled.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Interrupt Management: The RTOS kernel offers services to manage interrupts in real-time systems. It allows critical sections of code to be protected from interruption, ensuring data integrity and preventing race conditions.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Error Handling and Debugging: μC/OS-II provides facilities for error handling and debugging, including error codes and hooks that developers can use to customize error handling behavior.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Resource Management: The RTOS kernel allows tasks to manage and control access to shared resources, preventing conflicts and ensuring resource utilization efficiency.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>CPU and System Management: μC/OS-II includes services to manage the CPU and system clocks, power management, and other low-level system functions.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Preemption and Time Slicing: μC/OS-II supports preemption, allowing higher-priority tasks to preempt lower-priority tasks, ensuring critical tasks get executed in a timely manner. Time slicing allows tasks of equal priority to share the CPU in a round-robin manner.\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>Overall, μC/OS-II offers a comprehensive set of system functions that facilitate the development of robust and efficient real-time embedded applications. It has been widely used in various industries for many years and has a strong track record in the field of embedded systems development.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What is the correspondence between the register organization in the Thumb state and the register organization in the ARM state?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>In ARM architecture, the processor can operate in two states: ARM state and Thumb state. In the ARM state, the processor executes ARM instructions, which are 32 bits in length. In the Thumb state, the processor executes Thumb instructions, which are 16 bits in length and provide a more compact code size, suitable for memory-constrained environments.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>The correspondence between the register organization in the Thumb state and the register organization in the ARM state is as follows:\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>General-Purpose Registers (R0-R15):\r\n\u003Cul>\r\n\u003Cli>In ARM state, there are 16 general-purpose registers, R0 to R15, each 32 bits in size.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>In Thumb state, there are only 8 general-purpose registers, R0 to R7. These registers are still 32 bits in size and have the same functionality as the lower half of the ARM state’s R0 to R7.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Stack Pointer (SP) and Link Register (LR):\r\n\u003Cul>\r\n\u003Cli>The Stack Pointer (SP) and Link Register (LR) have the same functionality and usage in both ARM and Thumb states. They are used for managing the stack and subroutine calls.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Program Counter (PC):\r\n\u003Cul>\r\n\u003Cli>The Program Counter (PC) in ARM state is 32 bits wide and holds the memory address of the current instruction being executed.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>In Thumb state, the PC is a 32-bit register as well, but it is automatically adjusted to hold the address of the next Thumb instruction after each 16-bit instruction is executed. This automatic adjustment allows seamless switching between ARM and Thumb states during code execution.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Saved Program Status Register (SPSR):\r\n\u003Cul>\r\n\u003Cli>The SPSR is a special-purpose register that is only available in the ARM state. It is used to store the CPSR (Current Program Status Register) when an exception (interrupt or subroutine call) occurs. The Thumb state does not have an equivalent SPSR.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>CPSR and APSR:\r\n\u003Cul>\r\n\u003Cli>The CPSR (Current Program Status Register) is a 32-bit register that holds various flags and status bits that indicate the current processor state in the ARM state.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>In Thumb state, the CPSR is replaced by the APSR (Application Program Status Register). The APSR is a 32-bit register that stores status flags specifically related to the current application state in Thumb mode.\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 while the register organization changes in Thumb mode to accommodate the narrower Thumb instructions, the core architectural features and capabilities of the processor remain consistent between the ARM and Thumb states. The processor can switch between these two states seamlessly during code execution, allowing for more efficient and compact code in memory-constrained environments without sacrificing the overall performance and flexibility of the ARM architecture.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What is the role of the dual state symbol IO field?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>The dual state symbol IO field uses a bit variable to switch between two different texts.The symbolic IO field in the figure is connected to the bit change scene “Auto/Manual Switch” for displaying the operating mode of the system.Compared to the multi-state symbol IO field, the dual-state symbol IO field does not require a text list configuration and the configuration is very simple.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What is the principle of a pyroelectric sensor?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>A pyroelectric sensor is a type of infrared (IR) sensor that detects changes in infrared radiation. It operates based on the principle of pyroelectric effect, which is the ability of certain materials to generate an electric charge when exposed to variations in temperature.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>The key principle of a pyroelectric sensor can be summarized as follows:\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>Pyroelectric Effect: Certain materials, such as certain crystals and ceramics, exhibit the pyroelectric effect. When these materials experience a change in temperature, their internal polarization changes, resulting in the redistribution of positive and negative charges within the material.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Sensing Infrared Radiation: Pyroelectric sensors are designed to be sensitive to infrared radiation emitted by objects in their surroundings. When an object emits infrared radiation, it interacts with the pyroelectric material of the sensor, causing a change in temperature on the sensor’s surface.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Charge Generation: As the temperature of the pyroelectric material changes due to the incident infrared radiation, it causes a shift in the internal polarization of the material, resulting in the generation of electric charges on the surface of the material.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Sensing Circuit: The generated electric charges are collected by the sensing circuitry integrated with the pyroelectric sensor. The sensing circuit converts the charge into a measurable voltage signal proportional to the incident infrared radiation’s intensity and frequency.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Output Signal: The voltage signal from the sensing circuit serves as the output of the pyroelectric sensor. This output can be used to detect and measure changes in infrared radiation, such as those caused by the movement or presence of objects or living beings in the sensor’s field of view.\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>Pyroelectric sensors are commonly used in various applications, including motion detectors, occupancy sensors, security systems, and non-contact temperature measurements. They offer advantages such as fast response times, low power consumption, and immunity to visible light interference. Their ability to detect changes in temperature without the need for a continuous power source makes them well-suited for battery-operated and energy-efficient applications.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What are the basic steps of the VHDL language design of the combined circuit?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>Designing a combined circuit using the VHDL (VHSIC Hardware Description Language) involves several steps to describe the behavior and structure of the circuit. The basic steps of VHDL language design for a combined circuit are as follows:\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>Specification and Requirements:\r\n\u003Cul>\r\n\u003Cli>Define the specifications and requirements of the combined circuit. Understand the functionality and behavior that the circuit needs to exhibit.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Architecture Design:\r\n\u003Cul>\r\n\u003Cli>Start by creating an entity declaration that defines the interface of the combined circuit. The entity declaration specifies the inputs, outputs, and any generic parameters of the circuit.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Next, design the architecture of the circuit. The architecture describes the internal behavior of the circuit and how it processes the inputs to produce the desired outputs.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Select the appropriate architecture style, such as behavioral, dataflow, or structural, depending on the complexity and requirements of the circuit.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Behavioral Description:\r\n\u003Cul>\r\n\u003Cli>Use behavioral VHDL constructs to describe the functional behavior of the combined circuit. Behavioral description focuses on what the circuit does, rather than how it is implemented.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Use processes, if-else statements, loops, and other control structures to describe the circuit’s operation based on the given specifications.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Dataflow Description:\r\n\u003Cul>\r\n\u003Cli>For some circuits, dataflow modeling may be more appropriate. Dataflow modeling describes how data flows through the circuit from input to output.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Use concurrent signal assignment statements to model the flow of data through different logic elements.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Structural Description:\r\n\u003Cul>\r\n\u003Cli>For complex circuits, structural modeling may be necessary. Structural modeling describes how the circuit is composed of interconnected sub-components.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Instantiate other entities or components inside the main entity to represent the various building blocks of the circuit.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Simulation and Verification:\r\n\u003Cul>\r\n\u003Cli>Write testbenches to simulate and verify the functionality of the combined circuit. Testbenches are modules that provide stimulus to the circuit and check the correctness of the outputs.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Run the simulation to ensure that the circuit meets the specified requirements and operates as expected.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Synthesis and Implementation:\r\n\u003Cul>\r\n\u003Cli>After successful simulation and verification, synthesize the VHDL code to convert it into a hardware description language that can be used to program FPGAs or ASICs.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Implement the circuit on the target hardware, such as an FPGA, to create the physical combined circuit.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Post-Synthesis Simulation and Testing:\r\n\u003Cul>\r\n\u003Cli>Conduct post-synthesis simulation and testing to verify that the circuit’s behavior matches the design specifications after synthesis and implementation.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Timing Analysis:\r\n\u003Cul>\r\n\u003Cli>Perform timing analysis to ensure that the circuit meets the timing constraints and operates within the desired clock frequency.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>Throughout the design process, it is essential to use clear and well-structured VHDL code with proper comments and documentation to enhance readability and maintainability.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What are the types of electronic steering system sensors?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>Electronic steering systems, also known as electric power steering (EPS) systems, use various sensors to measure important parameters and provide feedback for precise steering control. The types of sensors commonly used in electronic steering systems include:\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>Torque Sensor:\r\n\u003Cul>\r\n\u003Cli>Torque sensors measure the steering input or torque applied by the driver to the steering wheel. They provide feedback to the EPS controller, allowing it to adjust the steering assistance accordingly.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Angular Position Sensor:\r\n\u003Cul>\r\n\u003Cli>Angular position sensors, such as potentiometers or Hall effect sensors, measure the rotational position of the steering wheel. They provide information about the steering wheel’s angle to the EPS controller, enabling it to determine the intended direction of the vehicle.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Steering Angle Sensor (SAS):\r\n\u003Cul>\r\n\u003Cli>The SAS is a combination of angular position sensors that precisely measures the steering wheel’s angle and rate of rotation. It provides accurate information about the vehicle’s steering angle, allowing the EPS system to adjust the steering assistance based on the steering wheel’s position.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Steering Torque Feedback Sensor:\r\n\u003Cul>\r\n\u003Cli>This sensor measures the torque or force applied to the steering column by the road, providing feedback on road conditions and steering effort to the EPS system. It helps enhance the driver’s steering feel and responsiveness.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Vehicle Speed Sensor (VSS):\r\n\u003Cul>\r\n\u003Cli>The VSS measures the vehicle’s speed and provides this information to the EPS controller. The EPS system can use this data to adjust steering assistance at different speeds, improving stability and comfort during high-speed driving or parking maneuvers.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Yaw Rate Sensor:\r\n\u003Cul>\r\n\u003Cli>Yaw rate sensors measure the rotational movement around the vertical axis (yaw) of the vehicle. The EPS controller uses this information to understand the vehicle’s lateral dynamics and make steering adjustments for stability control.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Lateral Acceleration Sensor:\r\n\u003Cul>\r\n\u003Cli>Lateral acceleration sensors measure the vehicle’s side-to-side acceleration. This data is used by the EPS system to adjust steering assistance and stabilize the vehicle during cornering or sudden maneuvers.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Steering Speed Sensor:\r\n\u003Cul>\r\n\u003Cli>The steering speed sensor measures how quickly the steering wheel is being turned. It provides feedback to the EPS system, allowing it to adapt the steering assistance based on the driver’s steering speed.\u003C/li>\r\n\u003C/ul>\r\n\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>These sensors work together to provide valuable data to the EPS controller, enabling it to determine the appropriate level of steering assistance based on driving conditions, vehicle speed, steering inputs, and other factors. The integration of these sensors in electronic steering systems helps enhance vehicle safety, responsiveness, and comfort while reducing the driver’s effort required for steering.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>\u003Cstrong>What is DPM?\u003C/strong>\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>DPM stands for “Digital Panel Meter.” It is an electronic device used to measure and display various electrical parameters, such as voltage, current, resistance, frequency, and other analog signals. DPMs have largely replaced traditional analog panel meters in many applications due to their higher accuracy, versatility, and ease of use.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>Key features and characteristics of Digital Panel Meters (DPMs) include:\u003C/p>\r\n\r\n\r\n\r\n\u003Col>\r\n\u003Cli>Digital Display: DPMs feature a digital display, usually an LED (Light Emitting Diode) or LCD (Liquid Crystal Display), that shows the measured value in numeric form. The digital display provides clear and precise readings compared to the moving needle of analog meters.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Measurement Accuracy: DPMs offer higher accuracy and resolution than analog meters, making them suitable for precise measurements in various applications.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Auto-Ranging or Manual Range Selection: Some DPMs have auto-ranging capabilities, where they automatically select the appropriate measurement range based on the input signal. Others require manual range selection for specific applications.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Multiple Measurement Parameters: DPMs can measure various parameters such as voltage (AC and DC), current, resistance, frequency, temperature, and more, depending on the model and configuration.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Compact Size: DPMs come in compact form factors, making them suitable for use in tight spaces and panel installations.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Additional Features: Some DPMs may have additional features like data logging, data hold, peak/minimum/maximum value capture, and communication interfaces for remote monitoring and control.\u003C/li>\r\n\r\n\r\n\r\n\u003Cli>Power Supply: DPMs are typically powered by an external power source, often derived from the same circuit they are measuring.\u003C/li>\r\n\u003C/ol>\r\n\r\n\r\n\r\n\u003Cp>DPMs find applications in a wide range of industries, including electronics, automation, power distribution, process control, and test and measurement. They are commonly used in control panels, industrial equipment, laboratory instruments, and other systems that require accurate and real-time monitoring of electrical parameters.\u003C/p>\r\n\r\n\r\n\r\n\u003Cp>Overall, DPMs play a vital role in modern electronics and industrial settings, providing engineers, technicians, and operators with essential information about electrical parameters for efficient operation, troubleshooting, and maintenance.\u003C/p>","Electronic","uploads/2023/01/01-e1684917470170-650x303.png",1776793311000,"20db6653d7e85fded62",0,"Admin","2028706543895019522","6e6a5077f839641679a","ten-daily-electronic-common-sense-section-157",308,1,"/uploads/2023/01/01-e1684917470170-650x303.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",1776841284162]