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Posts posted by Wiggle

  1. Hi everyone,

    I'm building this Voltmeter together with the supply 30V-3A from the projects.
    Now I have some questions about it:

    1) How can I supply the voltmeter if i'm using a transfo with only one secundary from    the dc supply? If I put a voltage regulator 7905 behind it, can I messure the output voltage correctly then?

    2) If I use the schematic out of the datasheet from the icl7107 i can' t get the correct voltage on my display. I can regulate it to 0 at 0V but I can not get the correct output from a input voltage.

    I hope someone can help me out with this,

    Greetings Wiggle

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