Voltage Doubler

Discussion in 'General Electronics Chat' started by bsfrye, Jan 19, 2010.

  1. bsfrye

    Thread Starter Member

    Feb 20, 2009
    23
    0
    I am looking to drive a stepper motor with 24 vdc (2 AMP max). I have a 12 volt battery (car). I found this schematic online - will this work for me? Seems simple enough that even I can put it together... What value for each component would I need?

    http://www.coolcircuit.com/circuit/voltage/index.html

    Brandon
     
  2. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,347
    Hello,

    The voltage doubler shown only works with AC.
    You probably need a boost converter to make 24 Volts from the 12 Volts.

    Greetings,
    Bertus
     
  3. bsfrye

    Thread Starter Member

    Feb 20, 2009
    23
    0
  4. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
  5. bsfrye

    Thread Starter Member

    Feb 20, 2009
    23
    0
    I would like to - this stuff is hard for me though. I am in the prototyping stage of my project... It may be easier to simply buy one so that I can get it up and running. Long term probably put one on the board I am trying to get together. The big pain in the butt for me is doing the boards. Really hard. I try the toner transfer method and it works about 50% of the time!
     
  6. bsfrye

    Thread Starter Member

    Feb 20, 2009
    23
    0
    Well - looking at it there are only a couple resistors and capacitors... What are the other symbols? Also there is an arrow that seems to skip over the 50K resistor!? What is that?
     
  7. hobbyist

    Distinguished Member

    Aug 10, 2008
    764
    56
    arrow pointing over the 50K resistor, is the symbol for a variable resistor, 50K potentiometer.

    The box is an IC, regulator I think,
    100 uh is a coil.
    1n5821, a schottky rectifier.
     
  8. HeliEye

    New Member

    Feb 6, 2010
    9
    0
    The answer to your problem can be found here, as mentioned earlier >> http://www.virtualvillage.co.uk/12v-to-24v-dc-dc-power-converter-module-003602-013.html

    It's the ready built version of the circuit Sgtwookie presented and costs £11.99

    I bought this to fix a problem on a heavy duty PTZ camera which was struggling on 12VDC, I fitted this unit to only feed the stepper motor control PCB, setting it to 20VDC o/p, it worked great, although I'll re-design it to fit better in the confined space I have, I'll loose the fitted heatsink and use the chassis for cooling, thus keeping the profile low.

    hope this helps.

    Steve
     
    Last edited: Feb 6, 2010
Loading...