DC=AC converter with DC=DC converter - has switch opened indirectly by sawtooth and by fault signal derived from given comparison

摘要

The converter has a dc/dc converter, a transformer, a sawtooth oscillator and a comparator comparing the sawtooth with a fault signal and opening a switch in the dc/dc converter. The fault signal is obtained by comparing the block wave signal present before the output of the LC filter on the dc/dc converter and a reference provided by a reference waveform. - The result of this latter comparison is passed to an integrator whose output is the fault signal. The integrator is a passive RC type followed by a correction circuit or it may be active comprising amplifier combined with an RC network.