專利摘要：
A three arm rectifier and inverter circuit is provided. The three arm rectifier and inverter circuit includes an input end, a rectifier circuit and an inverter circuit. The input end is utilized for inputting an input voltage and an input current. The rectifier circuit includes a low frequency switching arm. The low frequency switching arm is coupled to the input end for receiving the input voltage and the input current and generating a trigger signal. The inverter circuit includes a full bridge switch. The full bridge switch is coupled to the low frequency switching arm for receiving the trigger signal and adjusting an output voltage.