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vu meter 4

2017-12-21 07:05  
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VU Meter 4

VU_Meter_4.gif (17469 bytes)

?? ??????? ???????????? ????????? ?? ??? ????? ???? ????????? ?????? ??? ??? ????? ??? ?????? ??????? ?????? ,??? ?????????. ?????????? ??? ????????? R1, ???? ?????? ??? ?????????? , ????????????? ??? ??????? ??????, ???? ????? ????????? ??? ?????? , ??? ??????????????.

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=10Kohmfor 4ohmR3=390ohmD1-10=LED
R1=18ohmfor 8ohmR4=2.7KohmS1=mini switch
R2=10KohmC1=2.2uF 25VIC1=LM3915

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