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W.M. Welch Variable or Fixed Transformer

Discussion in 'General Electronics Discussion' started by Chris M, Aug 12, 2014.

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  1. Chris M

    Chris M

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    Aug 7, 2014
    I just love vintage electronics and bench test equipment.
    Does this put out DC Volts or AC Volts?

    [​IMG]
     
    Last edited: Aug 12, 2014
  2. KMoffett

    KMoffett

    723
    75
    Jan 21, 2009
    I would bet that's AC. Their other vintage power sources are labeled DC if they are.

    Ken
     
  3. Chris M

    Chris M

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    0
    Aug 7, 2014
    Thanks Ken. It is a cool vintage transformer. DC would be of use to me. Oh well.
     
  4. Chris M

    Chris M

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    0
    Aug 7, 2014
    This might be a dumb question, the case is so cool, how hard would it be to re-purpose it to DC Power? Maybe an ATX inside! (Cheap)
     
  5. KMoffett

    KMoffett

    723
    75
    Jan 21, 2009
    For an "unregulated" supply, just add a bridge rectifier (50V/10A) and filter capacitor (????uF/25VDC).
    Oh, and a bleeder resistor!

    Ken
     
    Gryd3 likes this.
  6. Gryd3

    Gryd3

    4,098
    875
    Jun 25, 2014
    Minimal parts and will give you a rough DC supply.
    Red line is the rectified AC, Blue line is the expected DC output.
    http://i.stack.imgur.com/dIkNs.gif

    *Of course, that blue line will dip more as you increase the load...
     
  7. Chris M

    Chris M

    22
    0
    Aug 7, 2014
    Thanks KM & Gryd3.
     
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