Electronic overload protection circuit

Details Electronic overload protection circuit Electronic overload protection circuit

1979-07-09

1981-11-17

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

361100, 330298, 330207P, H02H 720

Patent

active

043014909

ABSTRACT:
A solid-state overload protection circuit for protecting a multiple-stage compound transistor power amplifier. The overload protection circuit includes a current-limiting circuit for sensing or limiting the current during an overload condition. The current-limiting circuit includes a transistor which conducts to limit the current in the output stages of the multiple-stage power amplifier. A monitoring circuit including a timing circuit, a comparator, and a switching transistor monitors the duration of the overload condition and disables the input stages of the multiple-stage power amplifier when a prolonged overload condition persists.

REFERENCES:
patent: 3976955 (1976-08-01), Hamada
patent: 3996497 (1976-12-01), Kamimura

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