Protection circuit for a power amplifier

Details Protection circuit for a power amplifier Protection circuit for a power amplifier

1994-03-03

1996-08-06

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including protection means

330207P, H03F 152

Patent

active

055437605

ABSTRACT:
A direct current voltages detecting circuit is provided for monitoring output voltage of the power amplifier. A direct current signal is produced when a direct current voltage is detected. A cutoff circuit responds to the direct current signal and renders an output stage of the power amplifier a cutoff state. A failure determining circuit is provided to respond to the direct current signal and to produce an abnormality signal. In response to the abnormality signal, a power supply cutoff circuit operates to cutoff a power supply of the power amplifier.

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