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How does X10 get power?

  1. Oct 18, 2006 #1
    Hey,

    Older homes use a loop-in arrangement where the two wires coming down to a light switch are both live, and the neutral's nowhere near.
    The X10 "plug n play" switches leak a small current through the light and draw their current from there.... I was just wondering, how exactly do they do this?

    Can someone point me in the direction of a full circuit diagram of how the X10 modules draw their DC power inline with the live??

    Thanks :)
     
  2. jcsd
  3. Oct 19, 2006 #2

    Danger

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    Sorry, man... I have no idea what you're talking about. :confused:
     
  4. Oct 19, 2006 #3

    NoTime

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    For the pulg in units that something else plugs into. I think there is a fairly standard power arangement.

    if you're talking about a replacement wall switch then I think there are two tap methods. One for power off just assumes a low load resistance, the other for power on uses a small inductor.

    Don't have any X10 schematics.
     
  5. Oct 19, 2006 #4
  6. Oct 19, 2006 #5

    Danger

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    Thanks for the links. The Wiki article isn't there, but the other one was about as comprehensive as anyone could want. I used to have the plans around somewhere for an intercom system that transmitted over the power lines, but that was just a straight signal over the system-neutral wire. This thing is in a whole 'nother realm. One question, though; it appears to be specifically tuned for 120VAC/60Hz. Do they make a European version as well?
     
  7. Oct 19, 2006 #6
    danger, yeh....
    its not specifically tuned... thats just an american website :)
     
  8. Oct 19, 2006 #7

    Danger

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    Figures. :rolleyes:
     
  9. Oct 19, 2006 #8

    NoTime

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    I never got around to analysing how this was done.
    But, you could pick up a cheap motion detector switch.
    This would have all the power managment circuitry.
    Probably cheaper than buying the components seperatly.
     
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