Optimum transistor drive circuit with over load compensation

Details Optimum transistor drive circuit with over load compensation Optimum transistor drive circuit with over load compensation

1982-03-17

1984-01-24

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307300, 307315, 307359, 363 56, H03K 326, H03K 2322

Patent

active

044279027

ABSTRACT:
A circuit for driving a power transistor that forms a part of an inverter circuit used in motor control in which the circuit is switched at high voltages. The motor drive circuit isolates and amplifies a control signal so as to operate the power switching transistors. The base drive circuit employs two characteristics of power transistors to derive maximum protection and maximum performance simultaneously. This control is accomplished by sensing both the collector-to-emitter voltage of the power transistor as well as the base-to-emitter voltage thereof.

REFERENCES:
patent: 4201928 (1980-05-01), Koetsch
patent: 4318011 (1982-03-01), Zels
patent: 4399500 (1983-08-01), Clarke et al.

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