Inverter is a converter that converts DC power (battery, storage battery) into fixed-frequency and constant-voltage or frequency-modulated alternating current (usually 220V, 50Hz sine wave). It is composed of inverter bridge, control logic and filter circuit.

The working principle of the power inverter

The PWM pulse is realized by the CPU microprocessor, and the low voltage 12V is changed to a DC voltage of about 300V through a high-frequency transformer. Then the CPU outputs a 50 Hz AC drive signal to drive the power switch to work. Through the successive conduction and conversion of the power tube, an AC voltage with an average effective value of 220V in the form of a square wave is output.

The output voltage of the power inverter can stabilize the voltage through its own feedback confirmation. No-load and rated voltage change is less than 10V.

220 volt inverter