every thing behind me

Discussion in 'General Electronics Chat' started by stephendej, Jun 5, 2012.

  1. stephendej

    Thread Starter New Member

    May 17, 2012
    10
    0
    It's me again,(pots smoking) I wired up my amp meter on the return side of my circuit and it works perfectly good. I dont even have to hook-up the second wire of the amp meter, but I tied it to ground anyway. Has anyone ever seen something like this before? I just cant understand why I can't place my amp meter inline and get a current reading with these Chinese meters. Like I said before, if I hook the meter between a circuit it should read the current passing through that line. Instead it keeps buring up my pots I use to vary my load, So I give up, I'll just wire them to work.​
     
  2. WBahn

    Moderator

    Mar 31, 2012
    17,757
    4,800
    Again, please tell us what the Make and Model of your meter is.
     
  3. BMorse

    Senior Member

    Sep 26, 2009
    2,675
    234
    What is your "load" ??
     
  4. Wendy

    Moderator

    Mar 24, 2008
    20,766
    2,536
    Ammeter design

    You will have to do some reading. A amp meter is a modified voltmeter, for example.

    You can not use a pot as a load reliably. You have already seen why this is the case.

    One of the core concepts here at AAC is the textbook we have on the top of the page, along with quite a few other tutorials.

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  5. cork_ie

    Member

    Oct 8, 2011
    348
    58
    Sorry you have lost me. How can an ammeter work if you are only connecting one wire?? Is it a clip on ammeter by any chance?
    You say ammeter works fine on the return side of your circuit and then in the next line say that you can't get the meter to give you a reading when you place it inline.
    Inline with what? Can you give us a rough drawing of your setup and I will try and help you if I can. Right now I haven't a clue what you are on about.:confused:
     
  6. radiohead

    Active Member

    May 28, 2009
    474
    31
    I may be wrong, but it sounds like you are trying to use an audio taper potentiometer. An audio taper pot can't handle much current. Try using a wirewound rheostat.
     
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