how can i increase sensing range of hall effect switch

Discussion in 'The Projects Forum' started by cemdogusyucel@hotmail.com, Apr 9, 2013.

  1. cemdogusyucel@hotmail.com

    Thread Starter New Member

    Apr 8, 2013
    5
    0
    Hi, how can i increase sensing range of hall effect sensor, i want it to be more sensitive, it's an open collector sensor, ugn3119u, supply is 5v, i drive output with 10k pull-up but range doesn't satisfy me?
     
  2. DickCappels

    Moderator

    Aug 21, 2008
    2,656
    632
    Well, the most obvious solution is to get a stronger magnet, but I'm sure you already thought of that. Since the ugn3119u has an on/off output, there is not much if anything you can do circuit-wise.

    You might be able to improve the sensitivity by using a flux concentrator. It could be thought of as a magnifying glass or antenna for magnetic flux. A drawing of a simple flux concentrator can be seen on the web page at the URL below.
    http://www.sciencedirect.com/science/article/pii/S0924424701008664

    You might want to have a look at this search: http://bit.ly/10QnkgM

    You might find this thread interesting if not relevant http://forum.allaboutcircuits.com/showthread.php?t=83536
     
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