How does an inverter work?
Working Principle
The four switches S1 through S4 form two bridge arms, with S1 and S2 sharing one arm and S3 and S4 sharing the other. When S1 and S4 are connected and S2 and S3 are disconnected, Uo = Ud across their load resistors. Conversely, when S2 and S3 are connected and S1 and S4 are disconnected, Uo = -Ud across the load resistors. By continuously operating the switches like this, an AC waveform is generated at the load, thus completing the DC to AC conversion process.