Power field effect transistor drive circuit

Details Power field effect transistor drive circuit Power field effect transistor drive circuit

1989-07-13

1990-11-13

Callahan, Timothy P.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307270, 307246, H03K 17687, H03K 301

Patent

active

049704206

ABSTRACT:
A switching circuit is provided with a power field effect transistor having a drain terminal, a source terminal and a gate terminal. A gate resistor is connected to the gate terminal. In response to a turn-on signal, a DC gate voltage is produced between the gate resistor and the source terminal. A circuit branch having a normally-on solid state switching device is connected between the gate resistor and the source terminal. The normally-on solid state switching device is turned off in response to the turn-on signal, and enabled in the absence of the turn-on signal to improve the turnoff characteristics of the power field effect transistor.

REFERENCES:
patent: 4346375 (1982-08-01), Billings
patent: 4404473 (1983-09-01), Fox
patent: 4408131 (1983-10-01), Fox
patent: 4438356 (1984-03-01), Fleischer
patent: 4461966 (1984-07-01), Hebenstreit
patent: 4492883 (1985-01-01), Janutka
patent: 4656365 (1987-04-01), Billings
patent: 4748351 (1988-05-01), Barzegar
patent: 4767952 (1988-08-01), Nollet

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