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N Mosfet and P Mosfet reverse the polarity

Discussion in 'General Electronics Discussion' started by xibit1987, Mar 14, 2012.

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  1. xibit1987

    xibit1987

    1
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    Mar 14, 2012
    Hi all,

    I will start to say sorry if I posted in the wrong sub-forum. Also i would like to tell you right away that i'm a beginner at this so pleas don't be to techinal in terms of explaining :)
    Normally i'm good with airsoft guns gears and such, and a huge problem is that the trigger system gets fried in these weapons, so i wan't to build Solid State switch for this purpose.

    What i'm trying to build is this:


    It removes the stress on the switch and breaks the motor like this:


    it's breaking the motor (reversing the polarity i think) and from what i have read it's doing so with a pMos

    I have made a mockup the best i can showing how i think it should be wired but i'm not sure (googled the last 3-4 days for tut's and info)

    I'm using a 7,4 or a 11,1 LiPo Battery depending on the rules of the game.

    I'm using 2 x RGEF600 polyswitch in parallel hence the trigger time (i know that i need to measure the resistance of both before soldering them together to be sure that they get the same load)

    Component list:
    http://uk.farnell.com/stmicroelectro...220/dp/9935703
    http://uk.farnell.com/international-...0ab/dp/1704508
    http://uk.farnell.com/littelfuse/5-0...smc/dp/1869376
    http://uk.farnell.com/te-connectivit...-6a/dp/1345950
    http://uk.farnell.com/te-connectivit...00r/dp/1751317
    http://uk.farnell.com/welwyn/pr5-2k2...ppm/dp/1634058

    Hope some friendly soul will help me out since my club is tired of frying our switches and it's a pain to replace them (i'm the guy doing that)

    Best regard
    - Rasmus
     

    Attached Files:

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