Run a 120vdc motor on home 120vac

Discussion in 'General Electronics Chat' started by Easel Gord, Jan 17, 2016.

  1. Easel Gord

    Thread Starter New Member

    Jan 17, 2016
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    0
    I am making a small table top wood saw with a 5" circular blade.
    Have dc motor from a friend that worked ok . It came out of a 1/2hp garage door opener
    I like the motor because of its size and weight and expect it will run fairly quietly.
    The label on the motor says 120vdc 900 watts 1/2 hp (picture attached).
    The motor pulley will be connected to a 14" long 5'8" arbor with a v belt.
    I would like to be able to control the motor speed .
    Been a carpenter for 50 year and now make toys and models in my apartment and live on a small pension. Any help would be appreciated.
     
  2. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,571
    2,382
    See the KB controllers on ebay, a little more $$ and a bit rarer are their PWM versions.
    Max.
     
  3. tcmtech

    Well-Known Member

    Nov 4, 2013
    2,046
    1,679
    I hope you don't mind having a 30 seconds out of 5 minute duty cycle.
     
  4. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,571
    2,382
    I doubt it will be that low a duty cycle, the thing to do is monitor the motor temp, a fan may be necessary.
    You may not find the rpm suitable for a table saw, however.
    Max.
     
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