AC TO AC MODIFIED SINE WAVE CONVERTER

An AC to AC modified sine wave converter, comprising: an AC input module, a rectifier filter circuit, a BUCK step-down circuit, a modified sine wave inverter bridge circuit, an inverter bridge control circuit, an AC output module, and a USB charging control circuit, wherein the modified sine wave inverter bridge circuit includes MOSFET M, MOSFET M, MOSFET M, MOSFET M, an input voltage monitoring module, an output current detection module, a first driving module connecting MOSFET M to the inverter bridge control circuit, a second driving module connecting MOSFET M to the inverter bridge control circuit, a third driving module connecting MOSFET M to the inverter bridge control circuit, and a fourth driving module connecting MOSFET M to the inverter bridge control circuit, and an AC power supply circuit is arranged between the inverter bridge control circuit and the USB charging control circuit.