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直流稳压电源工作原理
直流稳压电源是一种将220V工频交流电转换成稳压输出的直流电压的装置，它需要经过变压、整流、滤波、稳压四个环节才能完成。四个环节的工作原理如下：
DC regulated power supply is a kind of device that converts 220 V AC power frequency into DC voltage with regulated output. It can only be completed through voltage transformation, rectification, filtering and voltage stabilization. The working principles of the four links are as follows:
(1)电源变压器：是降压变压器，它将电网220V交流电压变换成符合需要的交流电压，并送给整流电路，变压器的变比由变压器的副边电压确定。
(1) Power transformer: it is a step-down transformer. It transforms the 220 V AC voltage of the power grid into the AC voltage that meets the needs and sends it to the rectifier circuit. The transformation ratio of the transformer is determined by the secondary voltage of the transformer.
(2)整流滤波电路：整流电路将交流电压Ui变换成脉动的直流电压。再经滤波电路滤除较大的纹波成分，输出纹波较小的直流电压U1。
(2) Rectifier filter circuit: the rectifier circuit converts the AC voltage UI into a pulsating DC voltage. The larger ripple component is filtered out by the filter circuit, and the DC voltage U1 with smaller ripple is output.
(3)滤波电路：可以将整流电路输出电压中的交流成分大部分加以滤除，从而得到比较平滑的直流电压各滤波电容C满足RL-C=(3~5)T/2，
(3) Filter circuit: most of the AC components in the output voltage of the rectifier circuit can be filtered, so as to obtain a relatively smooth DC voltage. Each filter capacitor C satisfies RL-C = (3 ~ 5) t / 2,
(4)稳压电路：稳压电路的功能是使输出的直流电压稳定，不随交流电网电压和负载的变化而变化。
(4) Voltage stabilizing circuit: the function of voltage stabilizing circuit is to make the output DC voltage stable and not change with the change of AC grid voltage and load.
DC regulated power supply is a kind of device that converts 220 V AC power frequency into DC voltage with regulated output. It can only be completed through voltage transformation, rectification, filtering and voltage stabilization. The working principles of the four links are as follows:
(1)电源变压器：是降压变压器，它将电网220V交流电压变换成符合需要的交流电压，并送给整流电路，变压器的变比由变压器的副边电压确定。
(1) Power transformer: it is a step-down transformer. It transforms the 220 V AC voltage of the power grid into the AC voltage that meets the needs and sends it to the rectifier circuit. The transformation ratio of the transformer is determined by the secondary voltage of the transformer.
(2)整流滤波电路：整流电路将交流电压Ui变换成脉动的直流电压。再经滤波电路滤除较大的纹波成分，输出纹波较小的直流电压U1。
(2) Rectifier filter circuit: the rectifier circuit converts the AC voltage UI into a pulsating DC voltage. The larger ripple component is filtered out by the filter circuit, and the DC voltage U1 with smaller ripple is output.
(3)滤波电路：可以将整流电路输出电压中的交流成分大部分加以滤除，从而得到比较平滑的直流电压各滤波电容C满足RL-C=(3~5)T/2，
(3) Filter circuit: most of the AC components in the output voltage of the rectifier circuit can be filtered, so as to obtain a relatively smooth DC voltage. Each filter capacitor C satisfies RL-C = (3 ~ 5) t / 2,
(4)稳压电路：稳压电路的功能是使输出的直流电压稳定，不随交流电网电压和负载的变化而变化。
(4) Voltage stabilizing circuit: the function of voltage stabilizing circuit is to make the output DC voltage stable and not change with the change of AC grid voltage and load.
