Bridge driver circuit for a DC electric motor

Details Bridge driver circuit for a DC electric motor Bridge driver circuit for a DC electric motor

1984-03-22

1985-10-01

Beha, Jr., William H.

Electric power conversion systems

Current conversion

With means to selectively provide d.c. of either polarity

318341, 318379, 363132, H02P 714

Patent

active

045450048

ABSTRACT:
A transistor bridge driver circuit having reduced operating losses, comprising a driver transistor connected to supply drive current to diagonally opposed bridge transistors and an auxiliary transistor effective when biased conductive to divert driver current away from one of the diagonally opposed bridge transistors. Switching losses are minimized because the bridge is operated in the one quadrant control mode and driver losses are minimized because one driver circuit controls the conduction of two diagonally opposed bridge transistors.

REFERENCES:
patent: 3110851 (1963-11-01), Plogstedt et al.
patent: 3233161 (1966-02-01), Sikorra
patent: 3776111 (1973-12-01), Maida
patent: 4275340 (1981-06-01), Schleupen
patent: 4319171 (1982-03-01), Motoori

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