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Produce 110V at 60cps

Discussion in 'Hobby Electronics' started by David Segall, May 15, 2006.

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  1. David Segall

    David Segall Guest

    I would like to buy an IBM electric clock from the United States. I
    understand that the "modern" ones ran directly from the mains. Is
    there an inexpensive way to produce 110V at 60cps, preferably ready
    built?
     
  2. Phil Allison

    Phil Allison Guest

    "David Segall"

    ** Be more specific - the above is no information at all.


    ** No.

    Most IBM clocks were mechanical with electric self winders.

    Likely work from 110 volts and 50 Hz just fine.




    ........ Phil
     
  3. Ross Herbert

    Ross Herbert Guest


    I assume you mean an "antique" IBM electric clock?

    Simplex acquired the clock side of IBM back in 1958 so it would seem
    likely that this is what you are referring to. It might be agood idea
    to find out as much as you can about your proposed purchase prior to
    doing anything just so you know what type of drive system you need.

    Start here http://www-03.ibm.com/ibm/history/exhibits/cc/cc_room.html
     
  4. Friday

    Friday Guest

    The older time clocks ran off a synchronos motor but the later ones had
    a more sophisticated setup with a battery back-up. I really don't think
    it'd be worth the effort to make it run on "Australian" power.
     
  5. Phil Allison

    Phil Allison Guest

    "Friday"

    ** Why tell me that ? Tell the OP.

    It is 100% wrong anyhow.






    ....... Phil
     
  6. David Segall

    David Segall Guest

    To be very specific
    Thanks Phil. To ensure that I am buying one of these is there an easy
    way of identifying them?
     
  7. David Segall

    David Segall Guest

    Thanks Ross but I have already looked there. Compared to IBM's usual
    standard I found it remarkably unhelpful.
     
  8. Ross Herbert

    Ross Herbert Guest

    However, the info given indicates that the clocks were either spring
    or weight driven. This means that dependence on the mains frequency
    for a stable time reference is irrelevant. The "electric" part of the
    clock probably refers to the method of winding the spring or raising
    the counterweight at certain intervals to maintain the clock running
    without human involvement.
     
  9. Phil Allison

    Phil Allison Guest

  10. David Segall

    David Segall Guest

    Thanks for the help. In return, here's the definition of an Internet
    troll <http://en.wikipedia.org/wiki/Internet_troll> so that you can
    use it correctly next time.
     
  11. Phil Allison

    Phil Allison Guest

    "Brenden" <

    ** Not one with crystal locked frequency and sine wave output.





    ......... Phil
     
  12. Brenden

    Brenden Guest

    David,
    You can probably pick up a small 12V - 110V AC / 60Hz inverter
    cheaply on ebay or through an online store, you'll then need a good 12V
    DC source from a power supply or power supply and battery combination.

    A bit messy, but you can get the 110V inverter off the shelf and the 12V
    power supply off the shelf. The clock will use very little power so
    you'll just need enough power at 12V to run the inverter.

    Regards,
    Brenden Ede
     
  13. Kr

    Kr Guest


    Go to a watch/clock maker and have the clock modified to run on the
    correct frequency. If you are really stuck, I know one in brisbane
    who could probably do this for you, however you would still need a
    110v supply for it.
     
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