High voltage direct current power supply with feedback control a

Details High voltage direct current power supply with feedback control a High voltage direct current power supply with feedback control a

1995-01-09

1996-01-23

Wong, Peter S.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

363 58, 363 59, 363 97, H02M 3335

Patent

active

054869927

ABSTRACT:
A high voltage direct current power supply having feedback control and a tection circuit for maintaining a controlled, stabilized output voltage. An oscillator is coupled to a transformer which in turn is coupled to a voltage multiplier. A feedback control is coupled to the transformer and the voltage multiplier which provides feedback to the transformer for maintaining an accurate, stable output voltage. Coupled to the feedback control is a protection circuit which prevents the output voltage from exceeding a predetermined output voltage. Additionally, the protection circuit shuts down the power supply if a short circuit occurs at the output. In one embodiment, the voltage multiplier is comprised of a plurality of voltage doubler diode and capacitor pairs. The feedback control is comprised of a comparitor and a buffer which drives a transistor coupled to the primary of the transformer, which acts as a feedback loop. The protection circuit includes a J-K flip-flop.

REFERENCES:
patent: 3818128 (1974-06-01), Chambers et al.
patent: 4073004 (1978-02-01), Chambers et al.
patent: 4757433 (1988-07-01), Santelmann, Jr.
patent: 5363288 (1994-11-01), Castell et al.

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