The control scheme and operating principle of a double closed-loop AC/DC power converter system are discussed by using physics.

从物理角度讨论了双闭环交/直流功率变换器系统的控制方案和工作原理。

DC power Input, built-in fuse.

直流电源输入，内置保险丝。

This equipment can only use 12v DC power.

本设备只能使用12 V直流电源。

Operation From DC Power Supply: Batteries.

使用直流电源：干电池。

Rectifying antenna(rectenna) can convert microwave power to DC power.

整流天线能把空间的微波能量转化为直流能量。