Transistor drive circuit

Details Transistor drive circuit Transistor drive circuit

1981-03-11

1983-07-12

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307280, 307300, 307314, H03K 345, H03K 333

Patent

active

043933165

ABSTRACT:
A drive current circuit for a switching power transistor which allows the controlled turn off of the transistor without affecting transistor turn on. The drive transformer has two cores one of which follows a linear magnetization characteristic and the other of which has a relatively high permeability. The input and output windings of the drive transformer are wound on both cores. A turn off winding is also included which is wound only on the high permeability core. A source of turn off charge is directly coupled to the transistor. Shorting of the turn off winding initiates the controlled turn off of the transistor.

REFERENCES:
patent: 3986052 (1976-10-01), Hanter
patent: 4123670 (1978-10-01), Pollmeier
patent: 4200813 (1980-04-01), Van Schaik et al.
patent: 4201928 (1980-05-01), Koetsch
patent: 4227099 (1980-10-01), Houkes
patent: 4248598 (1982-09-01), Smith
"Base Circuit Design for High-Voltage Switching Transistor in Power Converters"-W. Hetterscheid-Power Conversion International-vol. 6, No. 5, Sep./Oct., 1980, pp. 39 to 46.

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