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VU Meter 3

2017-12-22 07:49  
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VU Meter 3

VU_Meter_3.gif (16075 bytes)

  ??? ???? ???? ??????? ???????? ???????, ?? 10 Led. ??????????????? ?? ??????? ???????????? ????????? ???? ??? ?? IC2, ?? ?????? ??????. ?? ??? ???????? S1, ???????? ?? ?????????? ??? ??????? ??? Led . ? ?????? ??????? ?????????? ??? 60 mV-1.25 V.

  A very simple circuit of indication of level, with 10 Led. Is used the circuit of half-wave rectification of precision round the IC2, with gain one. With switch S1, we can select the indication of Led. The level of entry is 60 mV-1.25 V.

Part List

R1-2=10KohmD11-12=1N 4148S1= mini switch
R3-4=1KohmC1=10uF 25VIC1=LM3915
D1-10=LEDC2=1uF 25VIC2=TL071

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