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Crazy project

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#1
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?
 
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#2
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?
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.
 

Kreij

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#4
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.
 
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#5
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.
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
 

Kreij

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#6
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.
 

Kreij

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#8
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
 

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#9
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.
 

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#10
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.
 
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#13
no pics? :cry: