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  1. #1
    Join Date
    Sep 2015
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    17

    Question Where do I connect the cathode on an anode only PSU?

    I replaced the power supply on my laser and it only has the high voltage output, Where do I connect the cathode line? The old power supply had a separate blue cathode wire

  2. #2
    Join Date
    Aug 2009
    Posts
    655

    Re: Where do I connect the cathode on an anode only PSU?

    No idea but a pic would help maybe.
    In case anyone is wondering, I'm the twin of the other gfacer on cnczone...

  3. #3
    Join Date
    Sep 2015
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    17

    Re: Where do I connect the cathode on an anode only PSU?


  4. #4
    Join Date
    Aug 2009
    Posts
    655

    Re: Where do I connect the cathode on an anode only PSU?

    My guess is that you might see it once you remove the case. It looks like they just did not add pass through? On my old decommissioned 150W supply it going into the end of the transformers directly and its not a screw or anything that I could replace or add on. So is it there if you open the case (fingers crossed).
    In case anyone is wondering, I'm the twin of the other gfacer on cnczone...

  5. #5
    Join Date
    Sep 2015
    Posts
    17

    Re: Where do I connect the cathode on an anode only PSU?

    Quote Originally Posted by gfacer2 View Post
    My guess is that you might see it once you remove the case. It looks like they just did not add pass through? On my old decommissioned 150W supply it going into the end of the transformers directly and its not a screw or anything that I could replace or add on. So is it there if you open the case (fingers crossed).
    I will hold that as a backup plan. I have a question in to the seller as well so I'll give that a day. not crazy about cracking the case

  6. #6
    Join Date
    Aug 2009
    Posts
    655

    Re: Where do I connect the cathode on an anode only PSU?

    Oh its not an issue, I've done it plenty. But looks like a lightobjects model and they should know the story. Its not there in the pictures so I think you'll need to open the case anyhow. Its more a cover really.
    In case anyone is wondering, I'm the twin of the other gfacer on cnczone...

  7. #7
    Join Date
    Sep 2015
    Posts
    17

    Re: Where do I connect the cathode on an anode only PSU?

    There is a terminal post on the end of the PSU with the Anode wire. Could this be it? I assumed it was a ground connection. You can't see it in the pictures because it is behind the rolled up anode wire. Might even be what that is tiewrapped to

  8. #8
    Join Date
    Aug 2009
    Posts
    655

    Re: Where do I connect the cathode on an anode only PSU?

    You'll only know if you crack open the case... Sounds likely though.

    Sent from my LG-D852 using Tapatalk
    In case anyone is wondering, I'm the twin of the other gfacer on cnczone...

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