Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1975-03-11
1976-08-31
Zazworsky, John
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307300, 307313, 307315, H03K 1760
Patent
active
039783502
ABSTRACT:
A solid state amplifier has an output transistor stage and an input transistor stage interconnected as a Darlington circuit. An interstage transistor interconnecting the collectors of the two stages of the Darlington circuit is connected with the first stage transistor in a compound configuration. When the load current furnished by the amplifier is less than a predetermined value, the output stage operates as a simple saturated switch with its base drive current flowing through the emitter-base junction of the first stage which produces no collector current because the base-emitter junction of the interstage transistor is reverse-biased. When the load current exceeds said predetermined value, the interstage transistor begins to conduct allowing the input and output stages to operate as a Darlington amplifier and diverting a significant portion of the base drive current of the output transistor back into the load.
REFERENCES:
patent: 3436563 (1969-04-01), Regitz
patent: 3676713 (1972-07-01), Wiedmann
patent: 3845405 (1974-10-01), Leidich
Fletcher James C. Administrator of the National Aeronautics and Space
Maus Louis C.
Williams Donald E.
Manning John R.
Porter George J.
Wofford, Jr. L. D.
Zazworsky John
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