VU meter circuit


Posted on Jan 20, 2013

The circuit is placed parallel with the exit of power amplifier and us gives the level of signal ,from output. Changing resistance R1, in the input circuit, we adapt the indication of power, in the resistance of loudspeaker, that we use.


VU meter circuit
Click here to download the full size of the above Circuit.

Part List R1=10Kohm for 4ohm R3=390ohm D1-10=LED R1=18ohm for 8ohm R4=2.7Kohm S1=mini switch R2=10Kohm C1=2.2uF 25V IC1=LM3915




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