Control circuit for a switching transistor

Details Control circuit for a switching transistor Control circuit for a switching transistor

1991-08-30

1993-04-13

Voeltz, Emanuel T.

Electricity: power supply or regulation systems

External or operator controlled

Using a three or more terminal semiconductive device as the...

363 20, 361159, 307253, 307300, H02M 3155

Patent

active

052026191

ABSTRACT:
In a switching transistor control circuit, the switching transistor has a control electrode and first and second main circuit electrodes. A reactor is connected in series with the first main circuit electrode of the switching transistor to receive a main circuit current through the switching transistor. Circuitry is connected to an end of the reactor remote from the first main electrode and to the control electrode of the switching transistor, for supplying an electromotive force to the control electrode which is generated by the reactor as main circuit current decreases when the switching transistor is turned off. A control electrode driving circuit is connected to the control electrode, and is connected to one of the first main circuit electrode and a predetermined intermediate position on the reactor, for supplying a drive signal to the control electrode for selectively turning the switching transistor on and off.

REFERENCES:
patent: 4093877 (1978-06-01), Pollmeier
patent: 4549095 (1985-10-01), Stefani et al.
patent: 4639823 (1987-01-01), Kuroki

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