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DIY Hobby projects, diagram, schematic

Analog Frequency Meter Circuit

electronicecircuits, April 7, 2010August 17, 2023
analog frequency meter

Analog Frequency Meter Circuit using NE555

This 1-kHz linear-scale analog frequency meter circuit uses the 555 as a pulse counter.

Analog Frequency Meter Circuit

PARTS LIST
R14.7kΩ
R24.7kΩ
R310kΩ
R422kΩ
R54.7kΩ
R62.7kΩ
VR150kΩ
VR22.5kΩ
C10.001µF
C20.01µF
C310pF
D11N4148
Q12N3904
IC1NE555
IC2LM7805
M11mA meter
2N3904 NPN Transistor General Purpose Amplifier
2N3904 NPN General Purpose Amplifier

VR1 Adjust for 1kHz full scale reading.

Frequency is read on M1, (or 1mA meter) which can be calibrated to read 0 to 1 kHz.

Please send your ideas, which are very important for our success…

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Comments (20)

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    April 26, 2010 at 12:01 pm

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    May 2, 2010 at 1:54 am

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    May 3, 2010 at 10:56 am

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  6. TomPier says:
    May 6, 2010 at 10:28 pm

    great post as usual!

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  7. Occupational Therapy says:
    May 9, 2010 at 4:44 pm

    this post is very usefull thx!

    Reply
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    May 16, 2010 at 7:17 am

    nice post. thanks.

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    May 18, 2010 at 3:49 am

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    May 26, 2010 at 8:38 pm

    Valuable info. Lucky me I found your site by accident, I bookmarked it.

    Reply
    1. ali says:
      August 2, 2014 at 7:11 pm

      me too thanks…

      Reply
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    May 28, 2010 at 4:29 am

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    June 22, 2010 at 10:28 am

    Good fill someone in on and this enter helped me alot in my college assignement. Thank you as your information.

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  13. chad says:
    February 28, 2011 at 7:08 am

    thanks a lot!

    Reply
  14. Jayna Parkerson says:
    March 6, 2011 at 6:36 pm

    added this to digg

    Reply
  15. Kamran Shuja says:
    February 22, 2014 at 11:11 am

    a good circiut

    Reply
  16. abubakar says:
    November 9, 2014 at 2:06 pm

    can dis meter read all wave form?

    Reply
  17. kaushal gosai says:
    December 9, 2014 at 7:33 am

    what is the value of c4 in this circuit? and why connect 1ma meter in this analog frequency meter circuit?

    Reply
  18. Abody says:
    December 15, 2014 at 5:01 am

    Hii
    Thanks for this circuit , bat how max volts in input this circuit plezz .

    Reply
  19. ramakrishna says:
    March 10, 2015 at 7:43 am

    this circuit it not at all working…

    what is the value of c4?

    Reply

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