Transistor overload inhibit

Details Transistor overload inhibit Transistor overload inhibit

1977-11-04

1979-04-17

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific quantity comparison means

361 92, H02H 326

Patent

active

041504135

ABSTRACT:
An electronic circuit for inhibiting overconduction of power transistors utilized in a switching mode and driven by a square wave signal of selected frequency. A reference voltage is utilized to compare the conduction of the transistors. The signal produced as a result of the comparison is utilized to control the base drive to that transistor through a logic circuit. Timing means is provided to delay the turn on or tuen off of the drive signal responsive to the comparison signal.

REFERENCES:
patent: T950004 (1976-09-01), Tuttle
patent: 3102241 (1963-08-01), Johnstone
patent: 3449598 (1969-06-01), Wright
patent: 3764883 (1973-10-01), Staad et al.
patent: 3927352 (1975-12-01), Schatz

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