Miscellaneous active electrical nonlinear devices – circuits – and – Gating – Utilizing three or more electrode solid-state device
Reexamination Certificate
2008-05-13
2008-05-13
Tra, Quan (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Gating
Utilizing three or more electrode solid-state device
C327S430000
Reexamination Certificate
active
11420341
ABSTRACT:
A switching circuit includes a semiconductor switching element having a control electrode and a source-drain current path, the source-drain current path being connected between a voltage source and a load circuit, a parallel circuit formed by first and second transistors having respective collector-emitter paths connected between the control electrode of the semiconductor switching element and a reference potential point, a first resistor connected to the second transistor in series, a differential circuit connected between a control signal terminal and the base of the first transistor and a second resistor connected between the control signal terminal and the base of the second transistor. The first transistor is made conductive by a signal obtained by differentiating a control signal and subsequently the second transistor is made conductive to control the semiconductor switching element for ON/OFF.
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Jager Ryan C.
Tra Quan
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