source:Industry News Popular:adapter release time:2022-04-16 09:26:55 Article author:yu
The main function of the optocoupler in the circuit is to realize photoelectric conversion, realize isolation, and avoid mutual interference between input and output. In the design process of different switching power supplies, the role of optocouplers is also different. Combined with TL431, it is the best way to reduce control costs in the switching power supply industry.
1. Basic parameters of optocoupler
The internal structure of the optocoupler consists of three basic parts: light-emitting diodes, light-transmitting insulating layers, and phototransistors. The light-emitting diode emits light, penetrates the insulating layer to the photoelectric conversion transistor, and realizes the current transmission and isolation characteristics.
Second, the application of optocoupler in switching power supply
Features of optocoupler: It has one-way signal transmission, so as to achieve electrical isolation between the input end and the output end, that is, the output signal has no effect on the input end, and has the advantages of strong anti-interference ability, stable working characteristics, high reliability and high transmission efficiency. , which are usually used in switching power supply control loops.
The typical application principle of optocoupler in switching power supply: sampling from the output end, obtaining the error signal, and then transmitting the signal to the PWM controller of the input end IC through conversion and isolation, and by adjusting the PWM duty cycle, it can achieve high precision and stability. pressure output.
Read recommendations:
Single Output Type and 150W Output Power ac/dc 53 to 2.8v switching power supply
AC-DC output1: 54V/6.1A bare circuit output 2: 12V/3A dual switching power supply
Power adapter PCB layout and wiring design.india plug charger
Switching regulated power adapter with extremely wide input voltage range
The latest article
S series S1000 energy storage mobile power supply
2021-03-18S series S900 energy storage mobile power supply
2021-03-18New ABS Fire Shell Gigabit ESD Protection POE Powered Adapter Power Supply 90W POE Injector
2021-03-18ShenZhen Factory OEM ODM AC DC Open Frame Switching Power Supply Manufacturer
2021-03-18130W bare board power supply
2021-03-1880W bare board power supply
2021-03-1872W bare board power supply
2021-03-1872W bare board power supply
2021-03-1860W bare board power supply (54V)
2021-03-1836W Open Frame Power Supply
2021-03-1836W Open Frame Power Supply
2021-03-1830W Open Frame Power Supply
2021-03-1810W Open Frame Power Supply
2021-03-187W Open Frame Power Supply
2021-03-187W Open Frame Power Supply
2021-03-18Amplifier + power supply
2021-03-1060W single power supply
2021-03-10Amplifier + power supply
2021-03-1027W single power supply
2021-03-10Amplifier + power supply
2021-03-1030W power amplifier power supply
2021-03-10144W power amplifier power supply
2021-03-1048W desktop
2021-03-1048W desktop
2021-03-1024W U.S. regulations
2021-03-1018W U.S. regulations 18W Wall-Mounted Power Adapter
2021-03-1018W U.S. regulations18W Wall-Mounted Power Adapter
2021-03-1018W European standard Power Adapter
2021-03-1018W European standard Power Adapter
2021-03-1018W U.S. regulations18W Wall-Mounted Power Adapter
2021-03-10The latest article
2003-2004
2025-03-252004-2006
2025-03-252006-2008
2025-03-252009-2011
2025-03-252012-2014
2025-03-252014-2017
2025-03-252018-2022
2025-03-252022-2024
2025-03-252024-2025
2025-03-25What are the types of mobile phone chargers and their functions?
2022-05-21Advantages of switching power adapters
2022-05-21Five core functions that the power adapter can achieve.adapter manufacture
2022-05-20Analysis of the importance of power adapters for notebooks.adapter Processor
2022-05-20Details of switching power supply in maintenance
2022-05-19Understand the precautions of the power adapter and be an expert in electricity safety
2022-05-19This is how the EMC interference of the switching power supply is generated.adapter wholesaler
2022-05-18The relationship between the nominal voltage and current of the power adapter.power adapter price
2022-05-18Five basic functions of notebook power adapters.adapter wholesaler
2022-05-17Lightning surge immunity test method.power adapter price
2022-05-17Switching power supply ripple source and control
2022-05-16Level 6 energy efficiency standard power adapter T series
2022-05-16Children sleeping with pacifiers are prone to tooth decay
2022-05-16Six methods to deal with the heating problem of switching power supply transformer
2022-05-14The principle of flyback switching power supply
2022-05-14Types of thermal protection for power adapters.adjustable power adapter
2022-05-13Summary of common faults of LED switching power supply
2022-05-13The power transistor should be used like this in the power adapter
2022-05-124 modulation methods of switching power supply
2022-05-12Some little knowledge about switching power supply
2022-05-11Laptop Power Adapter Troubleshooting Steps
2022-05-11About
Product
Process
News
Recruitment
中文
Online consultation
Online map
中
