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falingtrea
09-27-2005, 05:16 PM
I found a place that sells 12V and 13.8v DC supplies. What would be a good amp rating for such a supply to use with a battery charger? The have 5A ($33), 12.5A($45), 8.5A($40), and 17A:eek: ($60) 12VDC. Then there are a 4A ($30), 5A ($30), 10A ($100), and 20A :eek: ($130) 13.8 VDC. The 12VDC supplies are closed frame switcher supplies and the 13.8VDC supplies are cased benchtop supplies. Found them in the Marlin P. Jones catalog I just got at work. Website is http//:www.mpja.com (http://www.mpja.com)

Red Scholefield
09-27-2005, 06:28 PM
I found a place that sells 12V and 13.8v DC supplies. What would be a good amp rating for such a supply to use with a battery charger? The have 5A ($33), 12.5A($45), 8.5A($40), and 17A:eek: ($60) 12VDC. Then there are a 4A ($30), 5A ($30), 10A ($100), and 20A :eek: ($130) 13.8 VDC. The 12VDC supplies are closed frame switcher supplies and the 13.8VDC supplies are cased benchtop supplies. Found them in the Marlin P. Jones catalog I just got at work. Website is http//:www.mpja.com (http://www.mpja.com)

You can do a whole lot better than this, see:
http://www.efunctional.com/ps12kx.html

A 10 amp supply for $35.00

falingtrea
09-27-2005, 07:33 PM
Heheh I looked a little further in the catalog and found a 185 watt PC supply with a 12V 10A output for only $10. Will take a little fiddling, because I think there is a sense line I need to connect, but I may go that route. Maybe I'll check the local surplus PC place and see what they have.

Also found some 2 Amp "wall warts" for $6. If I only am working with > 2 amp battery pack this may suffice.

ForestCam
09-27-2005, 07:35 PM
Find an old AT computer power supply and you won't need to doctor the board harness.

Dumpsters are a good place to look.:D

Milton
09-27-2005, 09:46 PM
Red
Good site, Best prices I have seen on Pyramid.
Milton

falingtrea
09-28-2005, 05:11 AM
Found another supplier for the Pyramid power supplies. For $2 more I could get a 10 amp with cig lighter power point.
http://www.teptronics.com/ps15kx.html

and the basic unit for only $33
http://www.teptronics.com/ps12kx.html

They have a lot of other versions from 3 to 80 amps :eek: :eek: :eek: at 13.8 VDC
http://www.teptronics.com/powersupplies.html

Ron Wu
09-28-2005, 05:26 AM
My computer consultant tells me he can get a new 12V, 15 AMP power supply for $25.

Ron

ragbag
09-28-2005, 11:18 AM
Most computer power supplies need converted before than can be used. Most computer supply places will give away the used ones.

Go to the RCBattery clinic and get the instructions for converting them.

http://www.rcbatteryclinic.com/

PC Power Supply for Chargers

I have been using this Pyraqmid 12v/14a one for a couple of years now.

Pyramid | Pyramid PS-14KX Regulated 12V 14Amp Power Supply

$39.99
In stock. Usually
ships within 24 Hours


http://www.etronics.com/product.asp?stk_code=pyrps14kx&store=&catid=4071

I have both sitting on the bench in use and have a couple of converted pc supplies laying under the bench ready for use.

By George

Ron Wu
09-28-2005, 06:57 PM
Ragbag,

Thanks, I'll check it out.

Ron