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How to make a rotating socket?

Discussion in 'General Electronics Discussion' started by Julia-L.E., Apr 20, 2015.

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  1. Julia-L.E.

    Julia-L.E.

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    Apr 20, 2015
    Hi there,

    Question: How can I make an electricity socket (extension cable) with at least 4 inputs rotate infinitely, without all the wires connected to it getting tangled?

    For an art project I want to hang a beamer to the ceiling, which has to rotate 360 degrees.
    To make this all work, I need to connect at least 4 electrical devices to a rotating electricity socket*.

    I was thinking of the following construction:
    electricity outlet - slipring - extension cable / socket

    Has anyone experience with this? Or maybe some thoughts on how I can build a rotating socket?

    Thanks!
    Julia


    http://en.wikipedia.org/wiki/Slip_ring

    * The beamer will be rotated by a motor (needs an adapter). The motor itself will be controlled by an Arduino (also needs power). Furthermore I need electricity for the beamer itself, and for the media-player that will sent the film-file to the beamer.
     
  2. shrtrnd

    shrtrnd

    3,816
    518
    Jan 15, 2010
    You need circular conductive rings, with wiper contacts to complete the circuit.
    Think of an old-style wafer switch as a similar example of how the circuit is completed.
    There are probably commercially available units that will do what you want.
    For example, the lighted disco-tech balls found in some clubs, that rotate while flashing lights.
     
    Last edited: Apr 20, 2015
    Julia-L.E. likes this.
  3. KMoffett

    KMoffett

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    Jan 21, 2009
  4. Julia-L.E.

    Julia-L.E.

    4
    0
    Apr 20, 2015
    Hi Ken,

    Thanks for the link! Looks like it's exactly what I need.
    Voltage is 230 here in The Netherlands. Current is 16 Ampere.

    Julia
     
    Last edited: Apr 21, 2015
  5. KMoffett

    KMoffett

    723
    75
    Jan 21, 2009
    You did notice that the link was to a 2 Amp slip ring?

    Ken
     
  6. Julia-L.E.

    Julia-L.E.

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    0
    Apr 20, 2015
    I did, but it won't be a problem unless I connect a device to it that needs more current than 2Amp, right?
    Or is it a problem to connect this slip ring to a 16 Amp outlet?

    Julia
     
  7. davenn

    davenn Moderator

    13,812
    1,945
    Sep 5, 2009
    correct and take that 2A as an absolute maximum

    no, not a problem .... the 16A rated outlet is telling you that that is the safe maximum that that outlet can handle ( not what is flowing out all the time)

    Dave
     
  8. Julia-L.E.

    Julia-L.E.

    4
    0
    Apr 20, 2015
    Thank you very much for your replies!
     
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