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Thread: Electromagnet Control Wiring

  1. #41
    Join Date
    Apr 2008
    Location
    Ann Arbor, Michigan
    Posts
    6,243
    171011-1645 EDT

    Use a 12 V or thereabouts DC power source and measure the coil current,

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  2. #42
    Join Date
    Feb 2016
    Location
    Illinois
    Posts
    401
    Quote Originally Posted by GeorgeB View Post
    It makes me wonder if there is a bridge rectifier built in. Try a different meter (hopefully with different technology) and see if it changes.
    Hmmm - hadn't thought of that.
    My first impulse is that a meter with enough voltage to forward bias the diode(s) would give a reasonably accurate reading, while a one that does not would read near infinity. I suppose it's possible that there is something in between?

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