ac to car dc

>>1086177
Literally Google 15 amp dc power supply

>>1086177
PC power supply is a goto for this type of thing.

File: DPS-1200FB-1.jpg (172KB, 1000x750px) Image search: [Google]

172KB, 1000x750px

If you want a power supply that hauls the mail, get a DPS-1200FB server power supply. You only need a resistor to make it work.
http://www.rchelination.com/setting-hp-dps-1200fb-power-supply/

>>1086177
Car battery or SLA in parallel with a charger

If you can find one for free I would definitely say use a pc power supply, even shitty ones can crank out that kind of amperage on the 12v line no sweat. Other options might be salvaging a laptop power supply, careful though as many are more than 12v.

>>1086177
Build a 12 volt linear power supply. Find and an old single battery APC UPS and pull the power transformer out of it. 400 va or higher will work fine. Google linear power supply for a schematic.

I built one this way. Mine can handle 10 amps regulated. 30 amps unregulated.

Cheapest way would be to go to Walmart with 50-60 bucks in your pocket and buy a 3 gallon Campbell hausfeld compressor and be done with it.

If you want to put a little effort into it, go on Craigslist and buy and old tower for like $20 or maybe even get it for free. Chances are it will have a 300-500w psu in it. Google "atx bench top power supply" and follow the instructions. I have an older one I hacked up that was like 400 or 500 watts that could do 35 amps on the 12 volt line. I took a small plastic container from Walmart and some other shit online and made a neat transparent case for it.

>>1087237
it's going to be used as a vacuum pump, so a compressor wouldn't be helpful....unless it's with a HF air vacuum

I have not seen any computer stuff for free within the past few months, I might look at like goodwill for a junk tower....I can get a new PSU for $20