Protective circuit for power amplifier

Details Protective circuit for power amplifier Protective circuit for power amplifier

1982-07-28

1984-12-04

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including protection means

330295, 330 51, H02H 720

Patent

active

044867204

ABSTRACT:
A protective circuit for a power amplifier includes an input terminal connected to the output terminal of a power amplifier to be protected and supplied with an output signal to a load from the power amplifier, a high frequency signal detector connected to the input terminal for detecting a higher frequency signal than that of audio frequency range and for producing a first control signal when the output of the high frequency signal exceeds a predetermined value, a control and driving circuit supplied with the first control signal, and a protective circuit controlled by the output of the control and driving circuit so as to disconnect the connection between the output terminal of the power amplifier and the load.

REFERENCES:
patent: 4127743 (1978-11-01), Ozawa et al.

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