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Touch Switch

Discussion in 'Electronic Components' started by Tom Hubin, Aug 14, 2006.

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  1. Tom Hubin

    Tom Hubin Guest

    Hello,

    I am looking for a small component or circuit to make a touch switch of
    an aluminum shell. Circuitry inside the shell would only be active while
    somebody is touching the shell. When not touched I need minimal battery
    drainage.

    Tom Hubin
     
  2. Guest

    www.digikey.com and search for "427-1099-2-ND"

    DigiKey sells a single-IC solution to this, from Quantum research
    group.
    Look at QT118 for a low-power part. They work pretty well. From
    a human factors point of view, you can do two interesting things:


    (1) make a pushbutton that apes/felony inmates/severe abuse cannot kill

    (2) make a pushbutton no one knows is there
     
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