Circuit for the production of an output voltage depending on an

Electric power conversion systems – Current conversion – Using semiconductor-type converter

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323DIG1, 363 25, 363124, H02M 3335

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active

041005953

ABSTRACT:
A circuit for the production of an output voltage generated based upon an input direct voltage and a given desired voltage. A series connection comprises a longitudinal regulating member, an inductor and a push-pull current transformer which produces the output voltage. The input direct voltage is fed to the push-pull current transformer. The push-pull current transformer includes a push-pull transformer having push-pull primary winding and a secondary winding. In addition, the push-pull current transformer includes switching transistors which are switched on and off in push-pull by a control circuit. The control circuit delivers a suitable cyclical changing control signal to the switching transistors. Circuitry is provided for minimizing if not eliminating spikes in the current occurring during a switching of the switching transistors. As a result, the switching transistors remain free from excessive voltages which can damage same.

REFERENCES:
patent: 3365650 (1968-01-01), Camp et al.
patent: 3378752 (1968-04-01), Naylor
patent: 3969652 (1976-07-01), Herzog
Hoffman, "Switching Regulator Having Ripple Compensation by Current Insertion in Transformer Primary", IBM TDB, vol. 18, No. 9, Feb. 1976, pp. 2927, 2928.
Beesley, "Push-Push Power Inverter", IBM TDB, vol. 18, No. 11, Apr. 1976, p. 3736.

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