Regulated power supply circuit

Details Regulated power supply circuit Regulated power supply circuit

1992-01-30

1994-03-22

Stephan, Steven L.

Electricity: power supply or regulation systems

Input level responsive

Using a linearly acting final control device

323311, 323268, 363 89, G05F 500

Patent

active

052968006

ABSTRACT:
The invention relates to a regulated DC power supply circuit comprising a full wave rectification stage for rectifying an AC input and a regulating stage for regulating an output voltage from the rectification stage. The regulating stage has a primary voltage regulating circuit and a secondary voltage regulating circuit. The primary voltage regulating circuit includes a series pass element, such as a MOSFET device, connected to operate continuously in source-follower mode. A primary voltage reference element, such as a zener diode, provides a gate reference for the series pass element. The secondary voltage regulating circuit is cascaded to the primary voltage regulating circuit in a voltage sharing configuration. The power supply circuit is therefore capable of handling input voltages over 1 kV, which exceed the maximum voltage rating of the MOSFET device. The invention extends to a DC voltage regulator, which includes the regulating stage without the rectification stage.

REFERENCES:
patent: 3049623 (1962-08-01), Du Vall
patent: 3535613 (1970-10-01), Katezenstein
patent: 4555660 (1985-11-01), von Winnicki
patent: 4806844 (1989-02-01), Claydon et al.
patent: 4835668 (1989-05-01), Palm et al.
patent: 4864213 (1989-09-01), Kido
"Dissipation Limiter for Variable Power Supplies", Canterberry, Elektor Electronics, vol. 10, No. 7/8, 1984, pp. 755-756.
"Floating Regulator for a PMT Power Supply", Baumann, IBM Technical Disclosure Bulletin, vol. 9, No. 10, Mar., 1967, p. 1461.

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