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Automatic Switch For Audio Power Amplifier

 
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bodrum48



Joined: 10 Mar 2005
Posts: 12
Post18 Jan 2007 15:53   Automatic Switch For Audio Power Amplifier
The circuit uses stereo preamplifier output to detect the presence of audio to switch the audio power amplifier on only when audio is present

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Verba



Joined: 11 Apr 2003
Posts: 97
Helped: 7
Post02 Feb 2007 21:50   Automatic Switch For Audio Power Amplifier
The problem is, you can never use your stereo amp as differential power amp as soon as the circuit is connected, it will keep it constantly off.
By the way, if your power amp class B or AB it doesn't take much power, it's only usefull with class A
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