Power supply utilizing transformerless optical driving control c

Details Power supply utilizing transformerless optical driving control c Power supply utilizing transformerless optical driving control c

1990-03-02

1991-06-11

Wong, Peter S.

Electric power conversion systems

Current conversion

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

363 17, 363 49, 363 98, 323902, H02M 3335

Patent

active

050237667

ABSTRACT:
A power supply receives and rectifies mains voltage using bridge D1-D4. This is used by a pair of transistors Q1 and Q2 to alternate the supply to a transformer T via capacitor C8. Outputs are available from secondary windings T2, T6 and T7. Further windings T4 and T5 provide an internal power source for system circuitry which includes optical regulation via IC1 and optical switching control using IC2.

REFERENCES:
patent: 3596165 (1971-07-01), Andrews
patent: 3663838 (1972-05-01), Reimers
patent: 4126819 (1978-11-01), Stobbe et al.
patent: 4349776 (1982-09-01), Federico et al.
patent: 4378585 (1983-03-01), Bete
patent: 4464709 (1984-08-01), Barter
patent: 4628426 (1986-12-01), Steigerwald
patent: 4656412 (1987-04-01), McLyman
patent: 4691275 (1987-09-01), Moscovici
patent: 4692851 (1987-09-01), Attwood
patent: 4713740 (1987-12-01), Drabing
patent: 4729085 (1988-03-01), Truskalo

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