High-frequency and high-voltage power supply unit with internal

Details High-frequency and high-voltage power supply unit with internal High-frequency and high-voltage power supply unit with internal

1991-10-21

1993-01-12

Beha, Jr., William H.

Electric power conversion systems

Current conversion

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

315127, 315226, 315DIG7, 363 37, 363 56, H02M 5458

Patent

active

051795094

ABSTRACT:
A high-frequency and high-voltage power supply unit with an internal protecting circuit includes a first DC power supply device, a second DC power supply device, a converting circuit, a sensing/holding circuit, and an amplifying circuit, where the DC power supply device incorporates with the converting circuit to generate high-frequency and high-voltage power to a neon light load. A wire is connected between a core of a third transformer and the sensing/holding circuit, and a pair of discharging tips disposed between the wire and one output terminal, such that when both output terminals disconnect from the load, a discharge occurs on the dischraging tips, causing an impulse which is further fed back to the sensing/holding circuit through the amplying circuit cutting off the operation of the converting circuit. When only one output terminal disconnects from the load, an impulse is generated and fed back to the sensing/holding circuit through the amplying circuit, cutting off the operation of the converting circuit.

REFERENCES:
patent: 4398126 (1983-08-01), Zuchtriegel
patent: 4616158 (1986-10-01), Krummel et al.
patent: 4712170 (1987-12-01), Grace
patent: 4870326 (1989-09-01), Andresen et al.
patent: 5081399 (1992-01-01), Jy
patent: 5097182 (1992-03-01), Kelly

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