Best way to identify PSU pins?

Discussion in 'General Electronics Chat' started by Cue, Dec 23, 2012.

  1. Cue

    Thread Starter New Member

    Oct 16, 2012
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    0
    I have a switching power supply which I cannot find any information on (it's a Yokogawa PS003B-0101)

    It has a 10 pin connector, but a more general question is what is the best way of determining what each pin is on any PSU?

    The problem is, I think with most PSUs, two of these pins need to be shorted for the power supply to actually turn on but how would you know which two it is? What is the best way of determining this without a datasheet for example? I'm sure shorting pins willy nilly is not wise and I'm not very good at reverse engineering so I'm having a hard time trying to figure it out from the board itself.
     
  2. Papabravo

    Expert

    Feb 24, 2006
    10,135
    1,786
    The only way to know for sure is to get a schematic or create one from looking at the PCB. Failing that, I'd junk the thing if it won't turn on and produce voltage.
     
    Cue likes this.
  3. Cue

    Thread Starter New Member

    Oct 16, 2012
    15
    0
    Hi Papabravo.

    I was hoping there was an easy way. Oh well, throwing it away seems a waste. It's a rather compact supply with several rails ranging from 3.3V to 20V. I'll try and create a schematic if I get some some time to burn.
     
  4. #12

    Expert

    Nov 30, 2010
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    Cue likes this.
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