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[SOLVED] Converting balnaced supply +12 0 -12 V audio amplifier to 0 +12 supply

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hafrse

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Converting balqnced supply +12 0 -12 V audio amplifier to 0 +12 supply

Hello,

I have a schematic of audio amplifier using balanced power supply +12/-12 volts, in my application I only have +12V, I know that I need to add coupling caps on inputs and outputs , aslo I need a voltage devider on the +ve of the 2 operation amplifier to compensate the sigle power supply, any suggestions how to build that voltage devider? also , where to place the devider and the caps for best results.
Please se attached picture of the amplifer.

Many thanks!
 

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Very simple;
What you now call GND, change the name to SIG_GND.

Generate this signal with a 50% resistor divider to equally split across the single supply voltage, buffer it with opamp configured as a follower, and the output is your SIG_GND.

Of course, the maximum signal swing will be only half of the previous circuit.
 
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    hafrse

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It is not an amplifier since it does not amplify. Its output levels are exactly the same as its input level, except one output is inverted.
 
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    hafrse

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Hi,

Out of curiosity I did an internet search "single supply amplifier circuit"
Useful results...

Klaus
 
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