Patent ID: 8269473
Filing Date: 2012-09-18
Classification: G03G

Abstract:
1. An AC high voltage power supply device, comprising: a comparison circuit configured to compare a first sinusoidal waveform signal and a second triangular waveform signal, and to output a comparison result signal corresponding to results of the comparison; a switching amplifier circuit configured to perform a full switching operation based on the comparison result signal output from the comparison circuit to perform signal amplification, and to output a full switch signal in which a low level is 0V; a conversion circuit configured to convert a waveform of the switch signal output from the switching amplifier circuit into a sinusoidal waveform, and to output a converted signal; a transformer configured to boost a voltage of the converted signal output from the conversion circuit; and a control circuit configured to perform feedback control on the first sinusoidal waveform signal based on a monitoring signal at an input or an output of the transformer, so that a peak level of the output signal of the transformer becomes a desired peak level, the control circuit comprising: