Ledli Voltmetre (Aküler İçin)
R1=1K2
R6=10K
D2-3-4-5=LED
R2-3-4=680R
R7-8-9-10=1K
IC1=LM324
R5=15K
D1=5V6 /0.5W Zener
RV1=10K trimmer
