Determining size of Smoothing Capacitor

Discussion in 'General Electronics Chat' started by hang glider, May 27, 2009.

Thread Status:
Not open for further replies.
  1. hang glider

    Thread Starter New Member

    May 27, 2009
    Total noob, I have no electrical experience, (other than wiring a couple of houses) but I have recently picked up a 130V DC gearmotor that I need to use.

    I have done a search, and you are all out of my league - what I'm reading is greek to me... but I can figure out the simple stuff. How to hook up the full-wave bridge rectifier (Radio Shac) to convert 120VAC house current, and even how to hook up the capacitor to smooth the output.

    What I don't know is the size of the capacitor and I don't know who to ask. So here I am.

    The motor draws .91 amps. A 20amp 200V rectifier should work - but will I get too little or too much DC output? (the motor will be used in 10-minute increments, most likely). Should I heat-sink the rectifier? Do I need to add resistors to the mix? (if so...what kind?)

    It seems like a simple project, but I am lost. Any assistance would be greatly appreciated.
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    This question has been answered under the heading "Filter Capacitors".
Thread Status:
Not open for further replies.