A protection circuit for an audio amplifier of the type having a power supply effective to supply a bias voltage determining the maximum non-clipping audio output voltage, a clipping detector effective to detect clipping in the audio output and generate a signal thereof, a circuit effective to detect the temperature of a component of the audio amplifier and generate a signal thereof and a variable gain circuit providing the input to the audio amplifier, the protection circuit comprising:įirst circuit elements responsive to the signal from the temperature detecting circuit to change the bias voltage supplied by the power supply to the amplifier in the direction of smaller maximum non-clipping audio output voltage when the temperature exceeds a predetermined temperature so as to induce clipping in the amplifier when the temperature of the component exceeds the predetermined temperature
The embodiments of the invention in which anĮxclusive property or privilege is claimed are defined as follows:ġ.
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