Semiconductor device for conducting primary current upon receipt

Details Semiconductor device for conducting primary current upon receipt Semiconductor device for conducting primary current upon receipt

1986-06-17

1988-05-24

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307570, 307574, H03K 1760, H03K 17687

Patent

active

047468149

ABSTRACT:
A semiconductor device comprising first and second transistors connected in series with one another to pass a primary current upon receipt of a control signal at the gate of the second transistor. The first transistor is coupled to receive a base current from a secondary power source. A third transistor is coupled to have a current path shunt that base current away from the first transistor upon conduction of the third transistor. A control electrode of the third transistor is coupled to receive the control signal also received at the gate of the second transistor. The polarity of the third transistor is selected to render the third transistor conductive when the second transistor is rendered non-conductive in response to the control signal and to render the third transistor non-conductive when the second transistor is rendered conductive by the control signal. Thus, the third transistor operates to shunt base current from the first transistor upon non-conduction of the second transistor, thereby quickly turning OFF the first transistor.

REFERENCES:
patent: 4103186 (1978-07-01), Albarran et al.
patent: 4360744 (1982-11-01), Taylor
patent: 4581542 (1986-04-01), Steigerwald

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