Non-resonance type AC power source apparatus

Details Non-resonance type AC power source apparatus Non-resonance type AC power source apparatus

1989-04-25

1990-08-07

Wong, Peter S.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

363 26, 363 41, H02M 7538

Patent

active

049473123

ABSTRACT:
An AC power source apparatus to be used in an AC corona generator necessary for a de-electrification/separation process, which is one of electrographic image forming processes, or in a case where a low frequency AC power source is required, has a construction such that a high-frequency pulse, whose time ratio is modulated trapezoidally with time, is applied to switching elements connected in inverse-series across a primary winding of a transformer, an inductance element having a regenerative diode and a reset winding is inserted between an intermediate tap of the primary winding of the transformer and a DC power supply input terminal, and an LC filter is formed by stray capacitance of a secondary winding of the transformer, whereby a desired output waveform can be produced with a simple circuit construction.

REFERENCES:
patent: 3916283 (1975-10-01), Burrows
patent: 4287556 (1981-09-01), Borland
patent: 4339791 (1982-07-01), Mitchell
patent: 4409535 (1983-10-01), Hickman
patent: 4628426 (1986-12-01), Steigerwald
patent: 4709323 (1987-11-01), Lien
patent: 4716509 (1987-12-01), Roccucci

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