Control circuit for switching inductive loads

Details Control circuit for switching inductive loads Control circuit for switching inductive loads

1982-11-15

1985-10-22

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307270, 307300, 307315, H03K 1760, H03K 326

Patent

active

045490953

ABSTRACT:
A control circuit for switching inductive loads which can be monolithically integrated and used in high-speed printing equipment and in chopper power supply systems. The circuit includes a final power transistor, driven for switching by means of a drive transistor coupled to its control terminal. A speedup circuit is connected to the control terminals of both of the transistors in order to accelerate the turning off of the transistors by reducing the discharge time thereof. Such a speedup circuit is enabled so as to remove charge carriers only for a period of time which begins when the transistors are turned off in order to avoid additional time delays when the transistors are subsequently turned on again.

REFERENCES:
patent: 3958136 (1976-05-01), Schroeder
patent: 4092551 (1978-05-01), Howard et al.
patent: 4318011 (1982-03-01), Zeis
patent: 4404478 (1983-09-01), Rischmuller
patent: 4461979 (1984-07-01), Jeenicke et al.

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