The four major components of the power adapter

Power adapter is an indispensable electronic product in our lives, we will charge almost every day to use it, although it seems to look at the design is very simple, but in fact, the power adapter is also composed of many sophisticated electronic components, a simple division of the words, there should be four major components, today Eahunt charger manufacturer to talk with you about the power adapter is made up of those four parts.

First, the main circuit: mainly includes the following parts

1. Inrush current limiting: Limit the inrush current on the input side of the power supply at the moment of turning on the power.

2. Input filter: its role is to filter the presence of grid noise and impede the machine generated by the noise feedback back to the grid.

3. Rectification and filtering: Directly rectify the AC power from the grid into a smoother DC power.

4. Inverter: the rectified DC power into high-frequency AC power, which is the core part of high-frequency switching power supply.

5. Output rectification and filtering: according to the needs of the load, to provide a stable and reliable DC power supply.

Second, the control circuit: on the one hand, sampling from the output, compared with the set value, and then go to control the inverter, change its pulse width or pulse frequency, so that the output is stable, on the other hand, according to the data provided by the test circuit, identified by the protection circuit, to provide the control circuit of the power supply for a variety of protective measures.

Third, the test circuit: provide protection circuit is running in a variety of parameters and a variety of instrumentation data.

Fourth, auxiliary power supply: to realize the power supply software (remote) start, for the protection circuit and control circuit (PWM and other chips) work power supply.

Eahunt charger manufacturer told us that the four parts of the power adapter, and to ensure that the power adapter can be normal, safe power supply work.