Wow, You guys know A LOT!!

Discussion in 'The Projects Forum' started by Redcaddy, Apr 4, 2009.

  1. Redcaddy

    Thread Starter New Member

    Apr 4, 2009
    5
    0
    Hi,

    I am a mere underling, and am amazed by the things you guys (& gals) on here know!

    I wondered if I could get some help with a simple 12v DC 7amp Motor (100psi water pump) I want to control;

    I would like to adjust the speed of the pump so the battery lasts longer, and to adjust the flow. I'm guessing a PWM is what I'd need.

    I've seen this on eBay, but wondered if it would be worth buying?
    >>> eBay Motor Control PWM <<<

    What do you guys think?

    Any advice welcomed!!
     
    Last edited: Apr 5, 2009
  2. Bernard

    AAC Fanatic!

    Aug 7, 2008
    4,173
    397
    Just wild guess: US $ 3 in parts should do it, but the one illustrated should work fine.
     
  3. thingmaker3

    Retired Moderator

    May 16, 2005
    5,072
    6
    For what it is, the price is fair. I'd rather build one.
     
  4. Redcaddy

    Thread Starter New Member

    Apr 4, 2009
    5
    0
    Thanks Dudes...

    there any way of telling if it work with my pump??

    I.E. frequency of PWM etc? Does this have to be specific, or do you just have to make sure the amperage is enough??

    Sorry for dumb Q's...

    Thanks..
     
    Last edited: Apr 5, 2009
  5. Redcaddy

    Thread Starter New Member

    Apr 4, 2009
    5
    0
    Bump..

    :confused:

    Anyhelp guys???

    Cheers
     
  6. KMoffett

    AAC Fanatic!

    Dec 19, 2007
    2,574
    230
    Only issue you may have (and may not) is that the starting current of a motor is often two or three times the running current. If you motor "runs" at 7A, and the controller is rated at 15A continuous, hopefully it will handle the brief starting current.

    Ken
     
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