sensing resistors

Discussion in 'The Projects Forum' started by gw95, Jan 23, 2012.

  1. gw95

    Thread Starter New Member

    Nov 9, 2011
    5
    0
    any ideas on sensing resistors to monitor current flowing ?
     
  2. BillB3857

    Senior Member

    Feb 28, 2009
    2,400
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    Low ohm resistors in series with current flow will develop voltage as defined by Ohm's Law. Not too sure I fully understand your question.
     
  3. kubeek

    AAC Fanatic!

    Sep 20, 2005
    4,670
    804
    Any questions?
     
  4. wmodavis

    Well-Known Member

    Oct 23, 2010
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    " ideas on sensing resistors to monitor current flowing "

    They have been proven to work based on Ohm's Law. Pretty straight forward.

    Any more detail on what you are really wanting to know?
     
  5. PaulEE

    Member

    Dec 23, 2011
    423
    32
    Low ohm low TC resistors for ball-park estimates, current shunts for moderate currents, high power current shunts for >50 amps.

    TC = temperature coefficient of resistance; as shunt/resistor heats up, ohm value changes, results change.

    GOOD shunts are supplied with characteristic data that describe how they perform at various temperatures.

    Good luck-
    :)
     
  6. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Use non-inductive resistors. Wirewound resistors have a fair amount of inductance.
     
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