Transistor switching circuit

Details Transistor switching circuit Transistor switching circuit

1980-05-12

1982-03-30

Beha, Jr., William H.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

307270, 307300, 323289, H02P 1322

Patent

active

043227856

ABSTRACT:
A driving circuit for a power transistor switch in which a feedback transformer between the collector path of the power transistor and that of the driver transistor is used to provide a current drive to the power transistor that is proportional to the load current, and in which a reverse current drive, also proportional to the load current is applied by way of a third winding on the transformer to the emitter-base circuit of the power transistor to decrease the switching-off time of that transistor.

REFERENCES:
patent: 3836836 (1974-09-01), Cowett
patent: 3958168 (1976-05-01), Grundberg
patent: 3962626 (1976-06-01), Cardwell
patent: 3999086 (1976-12-01), Ekelund
patent: 4061931 (1977-12-01), Boschert
patent: 4070071 (1978-01-01), Harnden et al.
patent: 4074146 (1978-02-01), Buonavita
IBM Technical Disclosure Bulletin, vol. 9, No. 7, Dec. 1966, pp. 932, 933.

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