Power supply circuit with a self-oscillating blocking oscillator

Details Power supply circuit with a self-oscillating blocking oscillator Power supply circuit with a self-oscillating blocking oscillator

1979-11-13

1981-09-22

Shoop, William M.

Electric power conversion systems

Current conversion

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

H02M 3335

Patent

active

042913675

ABSTRACT:
A power supply circuit is disclosed with a self-oscillating blocking oscillator. A switching transistor and a transformer connecting to a supply voltage produce a DC output voltage which can be obtained from the transformer via a rectifier arrangement. A regulating circuit in a control circuit of the switching transistor is provided which controls the switching transistor as a function of a comparison voltage which is drawn from a primary circuit of the transformer. An integration member connected parallel to the supply voltage produces a periodic, sawtooth-shaped signal which corresponds to the current in the primary circuit and with which the regulating circuit is driven so as to trigger the switching transistor.

REFERENCES:
patent: 3573596 (1971-04-01), Kamil
patent: 4037271 (1977-07-01), Keller

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