摘要：220v转5v电源电路图-220v转5v电路分析，电源电路采用AH8652集成稳压器作为稳压器件，用典型接法，220V电源整流滤波后送入AH8652稳压...
220v转5v电源电路图-220v转5v电路分析
一、单片机电源（220v转5v）设计
First, the single chip power supply (220v to 5v) design
电源电路采用AH8652集成稳压器作为稳压器件，用典型接法，220V电源整流滤波后送入AH8652稳压，在输出端接一个220uf和2.2k电阻进一步滤除纹波假负载，得到5V稳压电源。电路如图所示。
The power circuit adopts AH8652 integrated voltage regulator as the voltage regulator device. With the typical connection method, the 220V power supply is rectified and filtered, and then sent to the AH8652 voltage regulator. A 220uf and 2.2k resistor is connected to the output terminal to further filter the ripple dummy load to obtain 5V stable. Press the power supply. The circuit is as shown.
首先是对220V的高压进行变压，不需要变压器。在通过桥堆后，变为脉冲直流。滤波电路可以消除脉冲，但是输出的直流电压仍不稳定。最后，通过芯片fb电阻调节改变输出 电压，得到精准的5v，整个过程如图。
The first is to transform the high voltage of 220V, no transformer is needed. After passing through the bridge stack, it becomes pulsed DC. The filter circuit eliminates the pulse, but the output DC voltage is still unstable. Finally, the output voltage is changed by the chip fb resistance adjustment to obtain a precise 5v. The whole process is shown in the figure.