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question about motor controller amp rating

Discussion in 'Electronic Basics' started by robb, Jul 22, 2007.

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  1. robb

    robb Guest

    i have a sewing machine motor controler (wired in series with motor) that
    uses a
    "carbon pile element" where pressure on the pile causes decrease resistance
    and more current to flow and at some pressure point a short by passes the
    carbon pile

    controler is rated at 95-145 volts and 0.7 amps

    now someone has claimed no troubles using the controller with 120v - 1 amp

    is this true ? why or why not

    ithought the motor would potentially try to draw more current than the
    controller was rated for and of course overheat etc

    any help greatly appreciated
  2. neon


    Oct 21, 2006
    some designers as a rule allow for some design overstress. i do it for sure so 36% is good but not neccessary he or she might use it the question remaining is for how long Heat destroy fevices so for intermittent use it may last forever.
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