Control circuit for a switched-mode power supply, particularly f

Details Control circuit for a switched-mode power supply, particularly f Control circuit for a switched-mode power supply, particularly f

1975-12-10

1977-06-07

Goldberg, Gerald

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Plural load device systems

315399, 323 17, 358190, H02M 3335

Patent

active

040286061

ABSTRACT:
A switched-mode power supply provided with a control stage and a switching stage coupled by means of a transformer. The collector of an additional transistor is connected to the transformer. In this manner the ratio of the collector current to the base current of the switching transistor can assume a predetermined value, for example a constant value whatever the value of the mains voltage applied to the power supply.

REFERENCES:
patent: 3376489 (1968-04-01), Crayton
patent: 3742330 (1973-06-01), Hodges et al.
patent: 3925716 (1975-12-01), Griffey
patent: 3943425 (1976-03-01), Kupka et al.

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