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Peak Reading Audio Level Meter
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This circuit will only work with a MOSFET type opamp, bipolar types i.e. 741 and J-FET opamps such as LF351 will not work in this circuit.
Authored by
at
, Added: 5 Nov 2008
http://www.mitedu.freeserve.co.uk/Circuits/Audio/palm.htm
Go to the above webpage for full details
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