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Analog voltmeter question - minus DC voltage

Discussion in 'General Electronics Discussion' started by Dust bunny, Feb 21, 2013.

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  1. Dust bunny

    Dust bunny

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    Oct 4, 2012
    I need an analog panel mount voltmeter that can show a minus DC voltage range of approximately -500mV to -1500mV
    I read however, that an analog voltmeter cannot display minus values. Is that correct?
    If it is, can I just reverse the polarity of the connections to a say, 2 volt voltmeter?

    Many thanks!
     
  2. Jotto

    Jotto

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    Aug 24, 2012
    I have a meter that can read both positive and negative without changing anything. So I would think there are other meters that can do the same thing, you will need to search it out.

    I am talking a analog meter, not a digital. You should be able to get a digital one also.
     
  3. Harald Kapp

    Harald Kapp Moderator Moderator

    11,513
    2,651
    Nov 17, 2011
    Google "voltmeter center zero" (without quotes) or go here.
     
    Last edited by a moderator: Feb 21, 2013
  4. BobK

    BobK

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    Jan 5, 2010
    Reversing the leads will be okay as long as the meter has no other connection to the circuit.

    Bob
     
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