View Full Version : 200w Power supply - any use?

07-05-2004, 10:21 AM
I've just dismantled/scrapped/recycled a v. old PC and I wondered if the power supply is useful for anything these days, either inside or outside a PC?

Murray P
07-05-2004, 11:24 AM
Always handy to have such things around but will struggle to keep up with todays spec's when periferals like printers, scanners, drives, etc are added. Could be handy for a mini form factor PC though. Will very much depend on the quality of the unit, some of the 4-500W rated PSU's are not up to a good quality 3-350W PSU's standard of suppy but, it isn't really my area (if anything is ;) )

Cheers Murray P

Billy T
07-05-2004, 01:12 PM
You could make a cheap home entertainment centre. Have a look a This Post, (http://pressf1.pcworld.co.nz/thread.jsp?forum=1&thread=26760&message=97652&q=power#97652) just add an old car radio and a couple of speakers, put it all in a recycled small tower case and Bob's your uncle.


Billy 8-{) :D
There would even be enough power to
spare for a small reading lamp

07-05-2004, 04:07 PM
Yeah, Billy T, it looked like a great project - probably a bit outside my skillset. I can probably do assembly of stuff, but put a multimeter in my hands and I'd be getting nervous :D

07-05-2004, 04:10 PM
If ita an AT psu then it may be worth firing away somewhere incase the need for one arises,if its atx i wouldn't bother,they are as common as muck and an under powered unit thats had most of the life worked out of it isn't worth installing back into any computer

07-05-2004, 05:10 PM
I'm pretty sure it will be an AT PSU - how can I tell by looking at it?

07-05-2004, 05:12 PM
It will have 2 plugs to go into the motherboard,atx only has the one.

Should also say on the label.

07-05-2004, 05:31 PM
Well low power psu's arent completely useless, the one in the computer im using right now is 235W and its currently feeding a cdrw a dvd 2 hard disks an fdd a usb1.1 hub, joystick, webcam, keyboard, mouse, 56k modem, LAN card and wLAN card, so they're still usable!

07-05-2004, 05:31 PM
Hmmm, It doesn't say on the label. Are the motherboard plugs the ones that say P8 and P9?

09-05-2004, 10:29 AM
Im not sure! My PSU only has p1 through p7, with p1 being the only one that connects to the mobo

09-05-2004, 11:40 PM
The early ATX psu had a 20 pin double row plug which will only go in one way. Later ones had the 20 pin plug plus a 4 pin plug.

AT had two single row plugs which are plugged in together with the black wires to the centre (you fry the MB if it is the wrong way round)

Graham L
10-05-2004, 03:30 PM
P8 and P9 indicates an "AT" supply. (or earlier ... that pair of connectors with that pinout go back to the original IBM PC 5150).

If they are used for non-PC applications they often need a minimum load on at least the 5V supply (which is the regulated one) to operate. Some also need a load on the 12V.

10-05-2004, 04:19 PM
Thanks everyone for the info. It is pretty clear it is an AT PSU. I think it is going to go on the "just in case" shelf" until I run out of room...

Tony Bacon

10-05-2004, 05:56 PM
they are alot of use, you can give it to me, for example...

Curious George
12-05-2004, 12:17 AM
Well I use one to power a 12volt dichoric lamp in the workshop. Works a treat using an old flext goose-neck microphone post thingy.
It's a lot cheaper than buying a special transformer to do the same job....