Transistor driver circuit

Details Transistor driver circuit Transistor driver circuit

1974-12-27

1976-08-03

Miller, Jr., Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307296, 307315, 307299A, H02K 1700, H03K 1760

Patent

active

039731413

ABSTRACT:
This specification discloses transistor circuitry suitable for use as a switch or as a floating current driver to control the concurrent operation of a pair of utilization devices. The circuitry comprises an NPN and a PNP output transistor which are substantially simultaneously switchable to ON and OFF states by a bias control means. The output transistors each have a collector connectable to a utilization device and a voltage of a prescribed polarity. Emitters of the output transistors are connected together in a floating voltage arrangement via a resistor. The bias control means comprises a pair of NPN transistors and a diode connected PNP transistor illustrated for switching the NPN output transistor and then the PNP output transistor to ON and OFF states. A logic gate switches a constant current to the bias control transistors for controlling the switching operations.

REFERENCES:
patent: 3195018 (1965-07-01), Geger
patent: 3766410 (1973-10-01), Elsaesser

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