Hall Effect Outputs Complementary?

Discussion in 'General Electronics Chat' started by Nehmo, Jun 1, 2012.

  1. Nehmo

    Thread Starter New Member

    Aug 13, 2011
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    On http://www.allaboutcircuits.com/vol_2/chpt_13/6.html
    Regarding Hall effect sensors, it says
    “The voltages at the two outputs are complementary.”
    What do they mean by that? Doesn’t a Hall only have (2 power connections plus) one output? And what do they mean by “complementary”?
     
  2. #12

    Expert

    Nov 30, 2010
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    Complementary means opposite to each other. When one output is "high" the other is "Low".

    There are 2 Hall sensors in that example.
     
  3. Nehmo

    Thread Starter New Member

    Aug 13, 2011
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    [​IMG]
    I see 3 Hall sensors. And since they are 120 degrees apart, how can one be high and the other low?
     
  4. bertus

    Administrator

    Apr 5, 2008
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    Last edited: Jun 1, 2012
    Nehmo and #12 like this.
  5. Nehmo

    Thread Starter New Member

    Aug 13, 2011
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    Thank you. I get it now. It's simple. I wonder why it took so long for BL motors to catch on?
     
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