Sinusoidal shaped output voltage generator for interruption free current supply

摘要

The generator (1) receives the network sinusoidal voltage, to create a sinusoidal voltage output of 50 Hz frequency, and a sawtooth shaped voltage output of more that twice the incoming line frequency. Both signals are supplied to a class D amplifier (2), which feed a bridge circuit (3). The bridge outputs are coupled to a low pass filter (4). The filter output provides the final sinusoidal output, which is also used to provide feedback signals to the generator and to the bridge circuit.