Inductive load drive circuit

Details Inductive load drive circuit Inductive load drive circuit

1991-10-09

1994-04-19

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

361 91, 361111, F02P 300

Patent

active

053051769

ABSTRACT:
An inductive load drive circuit includes a transistor having a collector and emitter current path interposed between an inductive load and a constant current source, and a feedback circuit. The feedback circuit has a Zener diode and a resistor which are connected with each other in series. The feedback circuit is connected between the collector and the base of the transistor. A speed-up capacitor is connected in parallel with the resistor and in series with the base of the transistor.

REFERENCES:
patent: 4128091 (1971-12-01), Balan et al.
patent: 4318155 (1982-03-01), Thomas
patent: 4516184 (1985-05-01), Tominari
patent: 4562506 (1985-12-01), Moran
patent: 5016135 (1991-05-01), Zylstra

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