Power control circuit and a switching mode power supply employin

Details Power control circuit and a switching mode power supply employin Power control circuit and a switching mode power supply employin

1978-12-21

1980-10-14

Beha, Jr., William H.

Electric power conversion systems

Current conversion

Including automatic or integral protection means

363 21, 363 80, 363 97, 363147, H02M 3335

Patent

active

042284937

ABSTRACT:
A power control circuit for controlling the base current to a switching transistor connected in series with a primary winding of a switching transformer in which a logic circuit controls first and second amplifiers which respectively supply base current to and absorb base current from the switching transistor. The logic circuit blocks base current flow whenever the current flow through the transistor or a secondary winding of the transformer exceeds predetermined values in accordance with timing pulses.

REFERENCES:
patent: 3916281 (1975-10-01), Owen
patent: 4028606 (1977-06-01), Beuchee et al.
patent: 4060758 (1977-11-01), Wright
patent: 4079295 (1978-03-01), den Hollander
patent: 4087850 (1978-05-01), Koizumi
patent: 4104714 (1978-08-01), Smith et al.
patent: 4146832 (1979-03-01), McConnell
patent: 4156273 (1979-05-01), Sato
patent: 4187536 (1980-02-01), Govaert et al.

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