Isolated power supply feedback

Details Isolated power supply feedback Isolated power supply feedback

1983-03-28

1985-01-22

Wong, Peter S.

Electric power conversion systems

Current conversion

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

363 41, 363 97, H02M 3335

Patent

active

044955545

ABSTRACT:
The switching power supply has pulse width modulation controller 51 isolated by transformer 35, which is connected by line 33 to the output, VO, across lines 27 and 29. An alternating input is obtained from transistor 19 acting as a switch controlled by alternating signals on line 15 connected to node C. Diode 37 in series with resistor 39 provides damping. Response is very fast and effective, and the input elements, including controller 51, are fully isolated.

REFERENCES:
patent: 3611017 (1971-10-01), Freeland
patent: 3818306 (1974-06-01), Marini
patent: 3924172 (1975-12-01), Gregorich
patent: 4156273 (1979-05-01), Sato
patent: 4184197 (1980-01-01), Cuk et al.
patent: 4322817 (1982-03-01), Kuster
patent: 4439821 (1984-03-01), Grippe
IBM Technical Disclosure Bulletin, entitled "Overcurrent Detection Circuit for VHF C'uk-Type Power Converter," vol. 25, No. 7B, Dec. 1982, at pp. 3924-3926, by E. A. Dobberstein.

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