Electronic overload protection circuit

Details Electronic overload protection circuit Electronic overload protection circuit

H - Electricity

02

H

330/2

H02H 7/20 (2006.01) H03F 1/52 (2006.01)

Patent

CA 1133073

(Case No. 7018) ABSTRACT OF THE DISCLOSURE 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 over- load 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 switch- ing 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.

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