10 LED VU meter with LM3915


Posted on May 31, 2012

Supply voltage: 12 V. Supply current: 10 mA in stand-by, max. 80 mA. Input voltage: min. 20 mV rms. Indication range: 30 dB. LED currents: 7 mA. Ref. voltage of IC2: 5 V


10 LED VU meter with LM3915
Click here to download the full size of the above Circuit.

R1 - trimmer 100 k mini R2 - 2,2 k R3 - 1 M R4 - 2,7 k R5 - 6,8 k C1 - 0,47 uF C2 - 10 uF C3 - 47 nF C4 - 4,7 uF C5 - 0,1 uF C6 - 100 uF C7 - 100 nF IC1 - LM386 IC2 - LM3915 D1 - 1N4148 D2-D11 - bargraph or LED's




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