Why do some inverters output 170V and some output 220V?
The outputs of SG3525 and TL494 are square waves, and the frequency can be directly adjusted to about 50HZ. If a triode is used to process the inverter, it will be a quasi-positive rotating wave, and 170V should be 1 10V. If you want to output 220, the transformer is usually a 300V inverter, which is very high.