AC high voltage power supply

Details AC high voltage power supply AC high voltage power supply

1988-03-11

1990-04-24

Wong, Peter S.

Electric power conversion systems

Current conversion

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

363 56, 363 97, H02M 3335

Patent

active

049204718

ABSTRACT:
The invention relates to a high voltage AC power supply which can be operated as either a constant current source with overvoltage protection or as a constant voltage source with current limiting protection. The power supply includes a sinusoidal transformer having a high turn winding and a sampling circuit on its secondary side for sampling voltage proportional to the load current. A comparator compares the sampled voltage to a reference voltage and supplies an error voltage to a buck regulator. The buck regulator converts the error voltage to a variable DC voltage which is fed to an oscillator formed by the primary winding of the transformer.

REFERENCES:
patent: 3564393 (1971-02-01), Williamson
patent: 3777248 (1973-12-01), Vermolen
patent: 4061957 (1977-12-01), Jan Vader
patent: 4146832 (1979-03-01), McConnell
patent: 4318170 (1982-03-01), Cabalfin
patent: 4371918 (1983-02-01), Schierjott
patent: 4510562 (1985-04-01), Maeba
patent: 4519023 (1985-05-01), Lester
patent: 4524412 (1985-06-01), Eng
patent: 4686617 (1987-08-01), Colton

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