Electronic "Pinchers"

Discussion in 'General Electronics Chat' started by Mazaag, Dec 20, 2006.

  1. Mazaag

    Thread Starter Senior Member

    Oct 23, 2004
    255
    0
    Hey guys,
    I have a problem and I need a solution .

    I need an idea on how to PINCH A string using an electronically operated device... ANYTHINg.. nothing expensive or big... i was thinking somethign around the lines of an electrically operated door lock or something...

    would really appreciate your help..

    thanks guys :)
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Hi,

    An open frame spst relay with a bit of gum on the contacts might do the trick. Be nice to know how thick the string and how hard the pinch...
     
  3. Mazaag

    Thread Starter Senior Member

    Oct 23, 2004
    255
    0
    The string is pretty thin...its one those used in a retractable key chain...
     
  4. wireaddict

    Senior Member

    Nov 1, 2006
    133
    0
    Can you use 12 VDC? If so you might try using a steering column/brake interlock solenoid from an auto salvage yard & an eraser or two for the clamp. [Power door locks are actually motor-driven rack & pinion devices & probably use more current.]
     
  5. cheeseycheese

    New Member

    Dec 19, 2006
    8
    0
    A strong electromagnet with a hunk of rubber on the end, which presses agenst the string.
     
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