Brushless Revo + A123 and ICE - RC-Monster Forums

BrianG · 06.11.2007, 10:52 PM

What inexpensive PSUs do you know of that supply a single 35A rail?? The ones I made work well for smaller chargers (my EOS 7i), but the Xtrema needed 180w + losses. I ended up getting an Astron 30A supply off ebay for like $80. I then tweaked the voltage up to 14.5 (from 13.5).

zeropointbug · 06.12.2007, 12:27 AM

Sorry, I meant 35 amps through two rails (18A rails).

You can combine the rails as well.

Here is one as an example. Actually, it has quad 18A rails. $85 CAD

http://www.ncix.com/products/index.p...y&promoid=1060

What regulated PS would you recommend for that charger then?

jhautz · 06.12.2007, 12:57 AM

This is the power supply I use. I bought it from MetalMan almost a year ago for $25 I think. He said he bought 2 of them for a deal and didnt need the 2nd one. Dont know where he got it, but it seems to be very solid. No major mods were needed to make it work.

http://i66.photobucket.com/albums/h2...z/CIMG1892.jpg

I just soldered some 4mm gold plugs to the output and can just plug in to them of use aligator clips on them.
http://i66.photobucket.com/albums/h2...z/CIMG1893.jpg

Here is the specs and model number if anyone wants to hunt one down.
http://i66.photobucket.com/albums/h2...z/CIMG1897.jpg

zeropointbug · 06.12.2007, 01:05 AM

Nice, it looks like that is a modular server power supply.

30A on a single 12v rail is very good.

BrianG · 06.13.2007, 12:48 AM

Quote:

Originally Posted by zeropointbug

Sorry, I meant 35 amps through two rails (18A rails).

You can combine the rails as well.

Are you sure you can combine the rails? Most of the dual 12v supplies I've seen are seperate and go to different sections (like one 12v line for all the drives and the other for the mobo). I paralleled one once and one of the switching transistors got very hot, very fast. I would only do that if the specs say you can, but that's just me.

zeropointbug · 06.13.2007, 01:03 AM

Sounds like a driver interference issue? Was this an older psu unit?

Actually, lot's of the dual or quad rail psu's are actually one rail, with each 'rail' having it's own current limiting circuit, so for those it would be no problem.