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Inductive proximity switch?

Discussion in 'General Electronics Discussion' started by psr17, Aug 18, 2016.

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  1. psr17


    Aug 18, 2016
    Hi all
    First time here but been lurking a while, I think what I'm after is a inductive proximity switch, basically what I'm after is a switch that is triggered when a ferrous metal is close by

    I'm trying to make a detector to identify nails in timber, I know one can be bought but where's the fun in that, looking to use a 9v power supply

    Any advice or guidance is appreciated
  2. Minder


    Apr 24, 2015
    What diameter or area do you need to cover?
    For the most part it is not worth building one.
  3. psr17


    Aug 18, 2016
    I was looking at a 25mm radius, I know I could buy one but where's the fun in that
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