Overcurrent and overvoltage protected transistor inverter

Details Overcurrent and overvoltage protected transistor inverter Overcurrent and overvoltage protected transistor inverter

1986-09-03

1987-06-09

Beha, Jr., William H.

Electric power conversion systems

Current conversion

Including automatic or integral protection means

307263, 363 98, 363132, H02H 7122

Patent

active

046725245

ABSTRACT:
An inverter that has one or more transistors for supplying current to a load with one or more phases is provided with an overcurrent protection for the transistor. The changing rate for reducing the base current to the transistor upon the detection of an overcurrent is reduced according to a separate delay circuit so that the transistor will not be destroyed by an over voltage that would otherwise occur due to a rapid drop in current passing through the transistor and the inductance of the load circuit including the transistor.

REFERENCES:
patent: 3729655 (1973-04-01), Gratzke
patent: 4178619 (1979-12-01), Seiler et al.

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