Monday, August 25, 2014

Sound Level Meter



This is a wonderful schema which gives an attraction for your amp or audio setup so after fixing correctly you will be able to get maximum harvest of it.






Parts List.

Q1 BC 558 PNP Transistor
LED1-LED10 Standard LED or LED Array
R1, R3 1K 1/4W Resistor
R2 10K 1/4W Resistor
R4 100K 1/4W Resistor
R5 1M 1/4W Resistor
D1 1N4001 Silicon Diode
U1 LM3915 Audio Level IC
MISC Board, Wire, Socket For U1
C1 2.2uF 25V Electrolytic Capacitor
C2, C3 0.1uF Ceramic Disc Capacitor
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