VUMeter 10 Led Schematic

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.

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

Source :http://users.otenet.gr/~athsam/

Keywords : VUMeter, 10, Led, Schematic