Oblon, McClelland, Maier & Neustadt, L.L.P.
Inverter device
An inverter device includes: a simulation output voltage generation unit that generates a simulation output voltage that corresponds to an instantaneous value of an alternating current output voltage and that has a waveform whose peak value is smaller than a peak value of the output voltage; a circuit that generates a peak value detection voltage by rectifying and smoothing the simulation output voltage; and a monitor circuit that compares the peak value detection voltage, or a voltage obtained by dividing the peak value detection voltage, with a reference voltage and transmits a feedback signal according to the result of the comparison to the control circuit. The control circuit changes a duty ratio of a switching signal for performing on/off control on the switching element in accordance with the feedback signal and controls the peak value detection voltage to keep a given value.
RICOH COMPANY, LTD.
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Masakazu
Fujita