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Title: Controlled single pulse blocking converter
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.
Other info: Inventors: Kupka, Detlef (Munich, DT) Oberhuber, Alfred (Munich, DT) Application Number: 457824 Filing Date: 1974-04-04 Publication_date: 1976-03-09 Assignee: Siemens Aktiengesellschaft (Berlin & Munich, DT) Primary Class(es): 363/19 331/112 Other Classes: US Patent Ref:
Other Refs: Other References: (S3056 0015) IEEE Transactions on Industry Applications, Vol. IA-8, No. 4, pp. 437-442, Jul./Aug. 1972. | |