View Full Version : Power Supply Connections
11-23-2009, 10:23 PM
I have a LITEON PS-5022-5L power supply from an old HP computer. Dose anyone know what wires i connect to for power for my Olsen595 board??? Also I know you push a button on the coputer to turn it on. Is there a conneciotn I have to make to turn on the power supply???
Just got my 595 board and 10 SSRez boards and all my electronics and i'm starting to put them together. My 4 daughters and my wife are writing a sequence each so I would like to know what connections I need
Thanks in advance to all
Starting with 40 chanes for a Mega Tree
11-23-2009, 10:30 PM
Does that power supply have an ATX connector? (It would have a couple dozen wires on it and it'd be a single connector that normally plugs into the computer's motherboard).
If it is an ATX unit, there's a GREEN and BLACK pair of wires next to one another. Those are the two wires that signal it to "power on." You connect those two wires. Then when you apply power to the power supply it will power on and the fan should go.
Also on the ATX connector are several red wires. Typically those carry +5v dc. Yellow wires are usually +12vdc. The power supply probably has several 2-wire or 4-wire sets coming out of it, too. Normally you'd find a red, yellow and two black together, and these typically plug into a disk drive. The black wires are both ground; the red it +5v and the yellow +12v.
You should purchase a VOM (volt-ohm meter) so you can measure these things -- they're not expensive -- $15 will buy you one that will do most of the simple things you'll need to test.
11-24-2009, 06:04 AM
If your plan is to permanently modify the power supply I suggest you read this http://www.wikihow.com/Convert-a-Computer-ATX-Power-Supply-to-a-Lab-Power-Supply I made one of these to power my f.m. transmitter.
11-24-2009, 09:32 AM
Thankyou to all. The information is a great help
Hopfully I have Blinky-Blinky this weekend
11-24-2009, 09:43 AM
Here's another post from a while back on converting PS's
TSTraub's link from Wikihow is the best instructable, IMHO.
11-24-2009, 10:01 AM
I use several supplies for my setup and have been simply cutting off the ends since I had extras. For the last one I did, I found an ATX power supply extension cable (12"). I cut the end of that and then plugged it into the power supply cable. This keeps the power supply viable for PC reuse and is a cheap/fast way to connect up the PS.
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