Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

How power requirement

  1. Feb 12, 2010 #1
    Dear Experts,

    I am trying to built an electronics controller for a high power DC motor.
    I have done small powered circuits using transistors. But learnt that these may have current limits. I like to know what is the usual way to handle high power operations using electronics.

    The dc motor specification:

    1. 12v.
    2. 3 to 4 amps max.

    thank you for reading.

  2. jcsd
  3. Feb 22, 2010 #2
    Dear Experts,

    can you give me some clues on how i can turn a digital circuit when the current passing through has to be around 3 or 4 amps for a dc motor?

    if i use a transistor as switch, it certainly cannot handle the current.

    how is it done?

    thanks for reading.
  4. Feb 22, 2010 #3
    Ok, case closed.
    I found out how to do it.
    It can be done using something called the high power transistors.

  5. May 19, 2010 #4
    I just joined, and I'm a power electronics and motor driver designer. It's too bad nobody helped you here.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook