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Coaxial Power Connectors - Need help!

  1. Aug 29, 2012 #1
    Hi all,

    I'm a mechanical engineering student and I need your help with a project as I'm somewhat not familiar to electrical stuff.

    I'd like to use coaxial power connectors (like the ones in laptops power input) to transmit 220 V, 15 A AC through them. The power source is fixed but the receiving component is in rotation. Is that possible? Because i made a little research and these coaxial connectors are all for lower voltage and amps of DC.

    If not possible, do you know any other ways or have any suggestions to make it work?

    Any help would be appreciated. I hope I could make it clear, and sorry for my English :blushing:
  2. jcsd
  3. Aug 29, 2012 #2


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    Gold Member

    subterrain, Welcome to Physics Forums!

    Power connectors such as the input to a laptop are NOT rated to pass 220V, 15 A AC! You should not use those to carry such high voltage and current. Your own research discovered that fact.

    Also, those connectors are NOT "coaxial". Coaxial connectors, or Electrical signal connectors, are typically used to pass Radio Frequency (RF) signals. This page describes 40 different types:

    Notice, please, that none of these are used to pass power like 220V AC at 15 A.

    Your requirement that one-half of the connector (the receiving component) is in rotation complicates the job greatly!

    A Google search using the terms “rotating power connectors” brings many choices. Here are two:

    Also, you might use a coiled power cable to connect the power source to the unit.

    p.s. Your English seems to be very good!
    Last edited by a moderator: May 6, 2017
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