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Thread: Toroid Transformers

  1. #1
    Join Date
    Jul 2009
    Location
    Waukesha, WI
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    661

    Default Toroid Transformers

    Does any one have a source or lead on toroidal transformers. I am seeking two units around 1000VA each to build a pair of DC servo supplies. Need secondaries to get to about 70 and 100 VAC.

    E core stuff is OK as well, just harder to modify than toroids, and I certainly would look at a good surplus source for linear supplies. I can but these new for under $200 it seems, but I remain eternally cheap and hopeful...
    Never hurts to ask

    Thanks
    paul

  2. #2
    Join Date
    Apr 2010
    Location
    Canada
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    1,846

    Default

    There is a guy who build them, I believe custom also, although if you get one close it is easy to wind on or take off a few turns.
    Antek or his ebay name is jonango.
    http://www.antekinc.com/
    Max.
    Last edited by MaxHeadRoom; 04-25-2012 at 04:50 PM.

  3. #3
    Join Date
    Aug 2006
    Location
    Beaverton, OR
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    Default

    I have a big transformer from my old mill. Probably good for at least 2kw. 70v out.

  4. #4
    Join Date
    Jul 2009
    Location
    Waukesha, WI
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    Default Transformer

    Hi Macona
    I tried a PM. I would be interested in the transformer.
    If you run two servos from one PSU is it sufficient to run two separate banks of filter caps?
    Does it help to add a diode to each supply?

    thanks

    paul

  5. #5
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    Canada
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    Default

    If there is only one secondary then generally 1 appropriately sized bridge and 1 capacitor bank is used?
    If you need to add a small overwind for 5v - 24v supply, the turns ratio is around 2t/volt.
    Max.

  6. #6
    Join Date
    Aug 2006
    Location
    Beaverton, OR
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    7,333

    Default

    Ahh, forgot to reply.

    This transformer ran 3 good sized servos.

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