Drive circuit for a controllable electronic switching element, f

Details Drive circuit for a controllable electronic switching element, f Drive circuit for a controllable electronic switching element, f

1974-09-12

1976-12-21

Miller, Jr., Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307300, 307314, 307254, H03K 1700

Patent

active

039990869

ABSTRACT:
A drive circuit for a controllable electronic switching element, preferably a power transistor has two part circuits. One part circuit includes a first transistor and one primary half of a current transformer the secondary winding of which is connected to the main current path of the switching element. The other part circuit consists of a second transistor and the other primary half of the current transformer. The transistor in each part circuit has its collector connected to the respective primary half and the bases of the transistors are connected together and to a voltage pulse source. The emitter of each of the transistors is connected to the control electrode of the switching element so that one of the part circuits forms a positive feedback loop for the collector current of the switching element when it is conducting and the other of the part circuits forms a negative feedback loop when the switching element is not non-conducting.

REFERENCES:
patent: 2915649 (1959-12-01), Cagle
patent: 3043965 (1962-07-01), Scarbough et al.
patent: 3217173 (1965-11-01), Strohmeier
patent: 3470391 (1969-09-01), Granger
patent: 3757144 (1973-09-01), Hetterscheid et al.
patent: 3872327 (1975-03-01), Rudert et al.

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