source:Industry News Popular:adapter release time:2022-03-23 09:17:07 Article author:sznbone
Lightning strikes are a common physical phenomenon and the main source of voltage stress for power adapters. Improper protection will cause power damage or restart, which will affect the normal operation of electronic equipment. Therefore, the power adapter must meet the lightning strike voltage level requirements defined by safety standards.
In this issue, the core technology team will share with you the lightning strike standard, lightning strike experimental configuration, differential mode and common mode interference path analysis and design principles.
In general, a surge voltage of ±1kV~±6kV is applied to the AC line. The test source is the AC line of the equipment under test (EUT) and the ground point of the system enclosure. During the test, the EUT is directly exposed to the surge energy and must be intact. After the lightning test is completed, it can continue to work normally.
There are two modules inside the lightning strike generator, namely the decoupling network and the coupling network. The function of the decoupling network is to isolate the lightning strike energy applied by the coupling network to the phase line of the EUT from the phase line of the power supply. The role of the coupling network is to apply the ideal lightning strike wave to the phase line of the EUT through the coupling capacitor.
As shown in Figure 3: The coupling energy of the differential mode lightning strike is transferred between the phase lines L and N of the EUT. From Figure 4, it can be found that the coupling energy of the common mode lightning strike is transferred between the phase lines L(N) and PE of the EUT.
Since different actual circuit configurations will have different effects on the differential mode lightning strike analysis of the system, we will make a brief analysis of the impact of differential mode lightning strikes through the circuit in the above figure.
The differential-mode lightning strike energy passes through the coupling network, enters the phase lines L and N of the EUT, the fuse F1, and the pressure-sensitive MOV1 to form a loop 1, which generates a differential-mode current 1;
After the differential mode lightning strike energy is attenuated through circuit 1, it forms circuit 2 through thermistor RT1, rectifier bridge, and electrolytic capacitor EC1, generating differential mode current 2;
After the differential mode lightning strike energy is attenuated by loops 1 and 2, the differential mode inductance L1 and the electrolytic capacitor EC2 form a loop 3, and a differential mode current 3 is generated.
Read recommendations:
12W 12V UL FCC CE certificates 12V wall mount power adapter
30W power amplifier power supply
Electrostatic shielding on output components
Power adapter design will pay attention to humane considerations
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
What 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
2022-05-119 classification methods of switching power supply
2022-05-10Advantages and disadvantages of switching power supply current mode
2022-05-10Advantages and disadvantages of switching power supply current mode
2022-05-099 classification methods of switching power supply
2022-05-09Characteristics and working methods of PFC regulated switching power supply
2022-05-07Six maintenance rules for drone lithium batteries.manual charger power adapter
2022-05-07Reasons for Inrush Current in Switching Power Supply Design.adjustable power adapter
2022-05-06The optimal solution of drone power management solution!12w acdc power adapter
2022-05-06Characteristics of Switching Power Adapter Transient Loads
2022-05-05About
Product
Process
News
Recruitment
中文
Online consultation
Online map
中
