Speed controlling of the DC 110V , 2A motor

Discussion in 'General Electronics Chat' started by roshantha08, Apr 23, 2009.

  1. roshantha08

    Thread Starter New Member

    May 10, 2007
    1
    0
    I already tried Speed controlling of the DC 12v 1A motor using PWM. Using LM555 and SG3524 ICs as a PWM controller and IRFZ44N as a out put driver.But I had a problem control the output stage when i'm using DC110V 2A motor.I d'nt know what kind of mosfet using that task.Pls any one can post the schematic diagram? It's great pleasure to me.
    Thank you
     
  2. MrFunny

    New Member

    Apr 21, 2009
    1
    0
    [​IMG]

    Hope it useful.

    With 110VDC, you can use IRF840.
     
    Last edited: Apr 24, 2009
  3. bertus

    Administrator

    Apr 5, 2008
    15,638
    2,344
    Hello MrFunny,

    You will need a freewheeling diode accros the motor.
    This a diode connected accros the motor with the cathode to the positive side.
    This will prevent the mosfet from burning.

    Bertus
     
  4. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    Choose a MOSFET with a Vds breakdown voltage greater than 200V.
    Also, you don't need all this BJTs to drive the MOS. Just use one wired as an emitter follower.
     
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