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What combination of CNC transformers to offer?

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  • What combination of CNC transformers to offer?

    I have several hundred high quality transformers with 110/220 primaries and 20v ct @ 5A RMS secondaries. My plan is to have one of the kids sell these things on Ebay either 2 or 3 to a box, using the "all you can fit" boxes with suitable protection, of course

    I realize the voltage is low but are these worth cascading in series for CNC use for 28-ish, 56-ish, 72-ish after rectification? How many should we offer in a pack to make it worth while. We're thinking maybe 2/$20 plus shipping so maybe 3/$25.

    We had these made some years back for continuous use in telecom test gear. I think we paid around $80 each at the time, US made in New England.

    Den

  • #2
    Sell as is.
    They are ideal for the simple Allegro chips and the L something, something, something series of chip that need about 30 volts to run safely.

    If they are doing a full 4 axis machine they could use two, one for X and Y and one for Z and A

    Funnily enough I recently bought 12 of these off Ebay Uk for the same purpose
    .

    Sir John , Earl of Bligeport & Sudspumpwater. MBE [ Motor Bike Engineer ] Nottingham England.



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    • #3
      Originally posted by nheng

      We had these made some years back for continuous use in telecom test gear. I think we paid around $80 each at the time, US made in New England.

      Den
      Den,
      May I ask who made them? just curious, as I used to work at a small transformer place in NH.

      -Al

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      • #4
        Al, Could've sworn they were Merrimack Magnetics but unpacked a few and they were made by ETC. I don't recall where ETC is from, do you? They may have been sourced by several companies as they were made to print.

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        • #5
          No,ETC does not ring a bell.

          I worked for a small place in southern NH called "New Hampshire Transformer", which closed up in 1999 when the owner died rather unexpectedly. I also worked for a short time for the precursor to RMS up in Dunbarton.

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          • #6
            There was a transformer co. located in Westfield Ma until recently, They did alot of short run custome stuff. ???

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