1. Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

Crazy project

Discussion in 'Cases, Modding & Electronics' started by MohawkAngel, Jun 21, 2010.

  1. MohawkAngel

    MohawkAngel New Member

    Joined:
    Jan 21, 2009
    Messages:
    1,864 (0.65/day)
    Thanks Received:
    122
    I just got an idea this morning after not sleeping for over almost 24 hours. When I don't sleep my brain overheat and I become a mad scientist :p

    STEPS

    1- I wanted to get a 280W psu get rid of all the wires that dont produce 12V and keep also the grounds.

    2- I would join all the yellow +12v wires to get the nominal 19amps of that PSU and join all the grounds together.

    3- Solder a 12v amps gauge to it in line with the yellow wires and a 12v voltage gauge in parallel

    4- Put alligator clamps on each end of the 2 big wires ending up with a group of 12v and ground

    5- Use is as a car battery charger for quick charging instead of using my 2amps charger I got from dad.

    What are your opinions?
     
  2. Sasqui

    Sasqui

    Joined:
    Dec 6, 2005
    Messages:
    8,728 (2.17/day)
    Thanks Received:
    2,713
    Location:
    Manchester, NH
    That's thoeretically 20 amps @12v, you'll need a pretty beefy wire (like 8 gauge) and connections: http://www.powerstream.com/Wire_Size.htm

    So joining all the yellow wires togehter and grounds together should give you the equivalent.
     
    10 Year Member at TPU Crunching for Team TPU
  3. MohawkAngel

    MohawkAngel New Member

    Joined:
    Jan 21, 2009
    Messages:
    1,864 (0.65/day)
    Thanks Received:
    122
    all the wires will be clamped together directly to the alligator clamps. I already got those 20 amps clamps and even 30 amps.
     
  4. Kreij

    Kreij Senior Monkey Moderator Staff Member

    Joined:
    Feb 6, 2007
    Messages:
    13,881 (3.86/day)
    Thanks Received:
    5,632
    Location:
    Cheeseland (Wisconsin, USA)
    I would do a couple of things.

    1) Put a current limiting curcuit in-line so that you can reduce the output current to 2 or 6 amps so that you can charge smaller 12v batteries (ie. lawnmower, atv, etc)

    2) Run it through a charge controller so that you do not overcharge the batteries and to prevent the battery from feeding back into the curcuit.
     
  5. MohawkAngel

    MohawkAngel New Member

    Joined:
    Jan 21, 2009
    Messages:
    1,864 (0.65/day)
    Thanks Received:
    122
    Most of ATV, lawn tractors and small engines stuff in Quebec are on 6 volts.
    I dont wanna limit that if i would limit i would just use the small i already got :p
    For the circuit breaker ill ask to my bro hes in electronic engineering.

    Thx for sharing your opinion and advices
     
  6. Kreij

    Kreij Senior Monkey Moderator Staff Member

    Joined:
    Feb 6, 2007
    Messages:
    13,881 (3.86/day)
    Thanks Received:
    5,632
    Location:
    Cheeseland (Wisconsin, USA)
    Are you sure about that? Eveything I own that uses a battery has a 12v battery in it.
    (ATVs, scooters, cars, boat etc.)
    It's rare to find something with a 6v battery these days.
     
  7. MohawkAngel

    MohawkAngel New Member

    Joined:
    Jan 21, 2009
    Messages:
    1,864 (0.65/day)
    Thanks Received:
    122
    Really sure bro :) I repair them hehehe
     
  8. Kreij

    Kreij Senior Monkey Moderator Staff Member

    Joined:
    Feb 6, 2007
    Messages:
    13,881 (3.86/day)
    Thanks Received:
    5,632
    Location:
    Cheeseland (Wisconsin, USA)
    Okay ... lol. I believe you. Just pretty rare here in the states I guess.

    I got a 15 watt (12v) solar panel and a charge controller to top off my batteries.
    Works great when the sun is out. :toast:

    It would, however, take about a week to charge a dead car battery as under optimal conditions it puts out about 49 amps in 7 days. heh
     
  9. sneekypeet

    sneekypeet Unpaid Babysitter Staff Member

    Joined:
    Apr 12, 2006
    Messages:
    23,354 (6.00/day)
    Thanks Received:
    7,912
    I do know that AthlonX2 used a stock PSU to charge a dry cell for a car amplifyer (capacitor), I dont see why it shouldnt work for a battery.
     
    10 Year Member at TPU
  10. Fourstaff

    Fourstaff Moderator Staff Member

    Joined:
    Nov 29, 2009
    Messages:
    9,344 (3.64/day)
    Thanks Received:
    2,079
    Location:
    Home
    I think its a great idea on paper, good luck and post some pics! Just don't burn your house down.

    I heard PVTCaboose did the opposite, using a car battery to power his rig.
     
  11. MohawkAngel

    MohawkAngel New Member

    Joined:
    Jan 21, 2009
    Messages:
    1,864 (0.65/day)
    Thanks Received:
    122
    Last edited: Jun 21, 2010
  12. MohawkAngel

    MohawkAngel New Member

    Joined:
    Jan 21, 2009
    Messages:
    1,864 (0.65/day)
    Thanks Received:
    122
    Project done ! It works.
     
    Last edited: Jun 22, 2010
  13. n-ster

    Joined:
    Jan 11, 2009
    Messages:
    9,010 (3.12/day)
    Thanks Received:
    1,458
    no pics? :cry:
     

Currently Active Users Viewing This Thread: 1 (0 members and 1 guest)