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Erivanst

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Posts posted by Erivanst


  1. The TL081 opamp used for U2 in the original project has a problem called "Opamp Phase Inversion". If its input went too close to its negative power supply voltage (within about 3V) then its output suddenly goes high.

    The new opamps do not have the phase inversion problem so Q1 is not needed.


    Audioguru, thank you for your prompt response. I

  2. Hi Erivan!
    It's the meter proposed in the main page of the project, but in DIP version.
    http://www.electronics-lab.com/projects/power/001/index.html (someone change the link)
    Check the page of the author of the LCD meter:
    http://www.elfly.pl/multimetr/multimetr_en_DIP.htm

    Ok, Bugmenot. Thank you. This is one of the eschematics that I was looking. Good to know that you have build it. Didn
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