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conductive -touch switch- on a lamp

Discussion in 'Electronic Basics' started by Sam, Nov 1, 2003.

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  1. Sam

    Sam Guest

    hi folks,

    my wife bought a tiffany lamp which has what she said was a touch
    switch. the lamp has a chrome base. to turn lamp on you touch the lamp
    base with your bare finger.even the lightest of touches will turn it
    on. if you touch it again it will get brighter. another touch and it
    will turn off.

    however if you try to turn it on using your finger nail or if you
    cover your finger in plastic wrap and try, it wont turn on no matter
    how hard you press.

    how does this switch work? i have a feeling that this is a pretty bad
    idea for a house voltage electrical device.

  2. It uses a simple touch switch that is isolated from the AC line. These
    have been around for at least 20 years, with UL approval, in the United
    States. It is also called a Capacitive switch. Use Google to look for
    mor information, or check with a place that sells lamp parts.
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