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Non contact voltage operated switch

Discussion in 'Electronic Basics' started by tone, Jan 10, 2007.

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  1. tone

    tone Guest

    Can anybody point me towards a circuit diagram/plan.

    I am looking for a design where I can operate a relay by sensing mains
    (240v ac) power being switched on in a cable. No metalic contact is to
    be made with the mains cable (ie cut into it). I can wrap a wire round
    or along it.

    Thanks
     
  2. Rich Grise

    Rich Grise Guest

    Try googling for "current transformer" or "hall effect device".

    Good Luck!
    Rich
     
  3. ehsjr

    ehsjr Guest

    Hack a cheap voltage sensor to operate a relay:
    http://www.toolbarn.com/product/greenlee/GT-11/

    Or did you want to learn how it's done?

    Ed
     
  4. Phil Allison

    Phil Allison Guest

    "Rich Grise"

    ** Ignore this utter fool.






    ........ Phil
     
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