Power supply regulation using switching transistors

Details Power supply regulation using switching transistors Power supply regulation using switching transistors

1976-10-18

1978-12-05

Shoop, William M.

Electric power conversion systems

Current conversion

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

363 37, 363143, H02M 5458

Patent

active

041288670

ABSTRACT:
A power supply provides a low-level DC voltage to one or more DC load circuits by first rectifying either of the two standard AC voltages and thereafter reducing the rectified AC voltage to the low-level DC voltage. The reduction of the rectified AC voltage to the low-level DC voltage is accomplished by a power transformer which is switched on or off by a pair of switching transistors. The switching transistors are activated by a control transformer operating in combination with a control circuit. The control circuit timely produces various pulse conditions in the control transformer which turns the switching transistors on or off in a prescribed manner.

REFERENCES:
patent: 3851182 (1974-11-01), Wallace
patent: 3924172 (1975-12-01), Gregorich
IBM Technical Disclosure Bulletin, vol. 17, No. 7, p. 1978, Dec. 1974.
IBM Technical Disclosure Bulletin, vol. 14, No. 3, p. 708, Aug. 1971.

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