News

Home  -  News  -  Industry News

What are the internal structures of the power adapter

source:Industry News Popular:adapter release time:2022-03-15 10:18:28 Article author:sznbone

  Desktop power adapter 1A 2A 3A 4A 5A 12V DC power supply for LED LCD  1 buyer

  Once the laptop is out of power, it cannot run normally, and the power adapter will be used. It has many advantages. So what are the internal structures of the power adapter? Next, the power adapter manufacturer will explain it in detail.

  1: Varistor, its function is that when the external voltage is too high, the resistance of the varistor quickly becomes very small, and the fuse connected in series with the varistor is blown, thereby protecting other circuits from being burned out.

  2: Fuse, the specification is 2.5A/250V, when the current in the circuit is too large, the fuse will blow to protect other components.

  3: Inductive coil (also known as choke coil), the main function is to reduce electromagnetic interference.

  4: Rectifier bridge, the specification is D3SB, the function is to convert 220V alternating current into direct current.

  5: Filter capacitor, the specification is 180uF/400V, the function is to filter the AC ripple in the DC power and make the circuit work more reliable.

  6: Operational amplifier IC (integrated circuit), an important part of protection circuit and voltage regulation.

  7: The temperature probe is used to detect the internal temperature of the power adapter. When the temperature is higher than a certain set value (different brands of power adapters have slightly different temperature thresholds), the protection circuit will cut off the voltage of the adapter output, thus protecting the power adapter and laptop components from damage;

  8: The high-power switching tube is one of the core components in the switching power supply. The switching power supply can work "one on and one off", and the switching tube is indispensable.

  9: Switching transformer, one of the core components in switching power supply, the main function is the function of voltage transformation. The function of the secondary rectifier tube is to convert low-voltage alternating current into low-voltage direct current. In IBM's power adapter, the rectifier tube is often operated in parallel by two high-power rectifier tubes to obtain a larger current output.

  10: Secondary rectifier, whose function is to convert low-voltage alternating current into low-voltage direct current. In IBM's power adapter, the rectifier tube is often made of two high-power parallel work to obtain a larger current output.

  11: Secondary filter capacitor, the specification is 820uF/25V, there are two in total, which play the role of filtering the ripple in the low-voltage direct current. In addition to the above components, there are adjustable potentiometers and other resistance-capacitance components on the circuit board.


Read recommendations:

600W power amplifier power supply

22W Open Frame Power Supply

AC DC 12V 1A 12W power adapter desktop certificate CB CE CCC

USB PD 3.0 related knowledge

Plug-in type Chinese standard certified power adapter.manual charger power adapter

Previous:Power Adapter Drive Circuit Technology Back to list Next:Several protective features of the power adapter

The latest article

Related Products

The latest article

2003-2004

2025-03-25

2004-2006

2025-03-25

2006-2008

2025-03-25

2009-2011

2025-03-25

2012-2014

2025-03-25

2014-2017

2025-03-25

2018-2022

2025-03-25

2022-2024

2025-03-25

2024-2025

2025-03-25

What are the types of mobile phone chargers and their functions?

2022-05-21

Advantages of switching power adapters

2022-05-21

Five core functions that the power adapter can achieve.adapter manufacture

2022-05-20

Analysis of the importance of power adapters for notebooks.adapter Processor

2022-05-20

Details of switching power supply in maintenance

2022-05-19

Understand the precautions of the power adapter and be an expert in electricity safety

2022-05-19

This is how the EMC interference of the switching power supply is generated.adapter wholesaler

2022-05-18

The relationship between the nominal voltage and current of the power adapter.power adapter price

2022-05-18

Five basic functions of notebook power adapters.adapter wholesaler

2022-05-17

Lightning surge immunity test method.power adapter price

2022-05-17

Switching power supply ripple source and control

2022-05-16

Level 6 energy efficiency standard power adapter T series

2022-05-16

Children sleeping with pacifiers are prone to tooth decay

2022-05-16

Six methods to deal with the heating problem of switching power supply transformer

2022-05-14

The principle of flyback switching power supply

2022-05-14

Types of thermal protection for power adapters.adjustable power adapter

2022-05-13

Summary of common faults of LED switching power supply

2022-05-13

The power transistor should be used like this in the power adapter

2022-05-12

4 modulation methods of switching power supply

2022-05-12

Some little knowledge about switching power supply

2022-05-11

Laptop Power Adapter Troubleshooting Steps

2022-05-11