Power Supply

[martyo]

I need a twelve volt power supply that I can plug in to a 110v outlet that will let me power car headlights.

Thoughts? Suggestions??

[Zack]

http://www.rvautoparts.com/product.asp?itemid=8035&gclid=CjwKEAjwl7ieBRCK2rCtqcCS 7jESJACZKQFKN5Oa7O6vrX1h1b3IdH ssF47ZNzLW0BSprsPGIS3FFRoC4R_w _wcB


Im not sure how many amps your headlights draw.

[RR|Suki]

What's the amp draw of headlights? Once you know that just buy any 12v wall adapter with enough amp rating. Cut, solder, profit.

edit* n/m Zack beat me to it :-o

[martyo]

http://www.rvautoparts.com/product.asp?itemid=8035&gclid=CjwKEAjwl7ieBRCK2rCtqcCS 7jESJACZKQFKN5Oa7O6vrX1h1b3IdH ssF47ZNzLW0BSprsPGIS3FFRoC4R_w _wcB


Im not sure how many amps your headlights draw.

Thanks Ed Zachary!

I will have to do some Cal Ka Latin'!

[martyo]

Thanks Ed Zachary!

I will have to do some Cal Ka Latin'!

Each headlight (and there are three) will draw 4.6 amps.

Anyone know of a 12V 15 amp supply for cheap??

[RF Overlord]

Radio Shack (http://www.radioshack.com/product/index.jsp?productId=2103960&umt_content=SG_powerSupplies&umt_campaign=CMS&umt_source=Cat&umt_medium=RSCOM).

[martyo]

Radio Shack (http://www.radioshack.com/product/index.jsp?productId=2103960&umt_content=SG_powerSupplies&umt_campaign=CMS&umt_source=Cat&umt_medium=RSCOM).

Thanks Bawb!

[whitey]

Car battery charger

[martyo]

I found this one which may give me some growth potential:

http://www.amazon.com/Power-Supply-Current-Meters-Lighter/dp/B007D6BHWE/ref=sr_1_1?s=electronics&ie=UTF8&qid=1406034071&sr=1-1&keywords=Jetstream+JTPS28M

Anyone have any first hand experience with these?

[jaydees]

I do not have any experience with that brand, but I have used regulated power supplies. I use one in my garage frequently. I was going to suggest them when you posted the link. There is a Ham Radio Outlet store in Atlanta. They would have what you are looking for.

[martyo]

I do not have any experience with that brand, but I have used regulated power supplies. I use one in my garage frequently. I was going to suggest them when you posted the link. There is a Ham Radio Outlet store in Atlanta. They would have what you are looking for.

I will hit the Yellow Pages!

[lji372]

Fixed

I found this one which may give me some growth potential:

39047

Anyone have any first hand experience with these?

My wife has....

[Black Terror]

I will hit the Yellow Pages!

ACK Radio on Deering St.

[jaydees]

The one in the link you posted has the amp and volt meters. Most will have the volts but not all will have the amps. IMHO the amp meter is nice to have.

[BigCars4Ever]

I bought this to run a couple of electric jacks.
http://www.ebay.com/itm/SUPERNIGHT-12V-DC-30A-360W-Regulated-Switching-Power-Supply-for-LED-Strip-Light-/321401457337?pt=US_Lighting_Pa rts_and_Accessories&hash=item4ad5050ab9

[Green96]

We use these at work all the time. They only go to 3A so it would only do one light at a time, but since it is adjustable you can use it for a ton of other things.

https://bkpmedia.s3.amazonaws.com/downloads/datasheets/en-us/1550_datasheet.pdf

Mouser has them for $149

[EMAS]

Got any old computers laying around? Their power supplies have 12v outputs that can supply a fair amount of amps depending on the unit. If you don't have an old computer lying around check for a computer repair used computer supply store.
Do not use a battery charger as they are not designed to regulate the voltage output unless they are connected to a battery and their voltage can go pretty high.

Edit: here is a new one that will do all 3 lights with left over power and is only $20 after rebate. http://www.newegg.com/Product/Product.aspx?Item=N82E16817148 027

[martyo]

Got any old computers laying around? Their power supplies have 12v outputs that can supply a fair amount of amps depending on the unit. If you don't have an old computer lying around check for a computer repair used computer supply store.
Do not use a battery charger as they are not designed to regulate the voltage output unless they are connected to a battery and their voltage can go pretty high.

Edit: here is a new one that will do all 3 lights with left over power and is only $20 after rebate. http://www.newegg.com/Product/Product.aspx?Item=N82E16817148 027

I like the one that you pointed out.

Not to seem like a dope, but how will I know which output leads to use out of that big bundle coming out of it?

Thanks for the tip!

[fastblackmerc]

Marty this is what you want

http://www.ebay.com/itm/12V-DC-3A-5A-10A-15A-20A-30A-Regulated-Switching-Power-Supply-For-The-LED-Strip-/221423157587?pt=US_Lighting_Pa rts_and_Accessories&var=&hash=item338dd94153

[Black Terror]

Not to seem like a dope, but how will I know which output leads to use out of that big bundle coming out of it?


The Computer Power Supply usually has a diagram with spec's on voltage and amperage at different connectors.

[EMAS]

I like the one that you pointed out.

Not to seem like a dope, but how will I know which output leads to use out of that big bundle coming out of it?

Thanks for the tip!

Here are a couple of how to's on converting a computer power supply to a bench top power supply.

http://makezine.com/projects/computer-power-supply-to-bench-power-supply-adapter/

http://www.instructables.com/id/Convert-A-Computer-Power-supply-to-a-Bench-Top-Lab/?ALLSTEPS

[martyo]

Thanks guys!!!!

[EMAS]

One thing to keep in mind if you are doing the computer power supply conversion is to use all of the leads from 1 rail (and ground) if you will be using the max power available on that rail. You'll overload a single wire of the gauge that comes out of the supply. The other thing is that if the power supply has 2 12v rails to keep the + side of those separated you can end up with a voltage control problem as one side fights with the other in an attempt to maintain 12v.