power inverter

Inverter, an 24 volt power inverters device must be something to so called, he and transformer has a direct difference, that is to say, he can realize the input and output DC, AC, working principle and switch power source, but the shock frequency in a certain range, for example if the frequency is 50HZ, the output is for the exchange of 50HZ. The 220 volt power inverters is can change its frequency equipment.