Controlled single pulse blocking converter

Details Controlled single pulse blocking converter Controlled single pulse blocking converter

1974-04-04

1976-03-09

Shoop, William M.

Oscillators

Relaxation oscillators

331112, 321 18, H02M 3335

Patent

active

039434257

ABSTRACT:
A single pulse blocking converter for generating of a constant output voltage has a switching transistor and a transformer wherein a feedback effect of the transformer supplies the base current of the switching transistor by way of the collector-emitter path of a driving transistor. The driving transistor is controlled by means of a control transistor in dependence upon a measured voltage which is in proportion to the output voltage of the blocking converter. The circuit is particularly characterized in that an auxiliary circuit is provided with a transistor which, during the transition of the switching transistor from the conductive into the blocked condition, applies a blocking voltage to the control path of the switching transistor and in that, by means of a periodic resetting of the auxiliary circuit by the pulses from a pulse generator, the blocking voltage is switched off and a new switching period is initiated for the switching transistor.

REFERENCES:
patent: 3515974 (1970-06-01), Stich
patent: 3564393 (1971-02-01), Williamson
patent: 3602801 (1971-08-01), Williamson
patent: 3736491 (1972-04-01), Kuster
(S3056 0015) IEEE Transactions on Industry Applications, Vol. IA-8, No. 4, pp. 437-442, Jul./Aug. 1972.

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