Mountain Dew Sprite

Don_HH2K's Blog

Don tryeth, Don hacketh, and Don gaveth up.
posts - 49, comments - 69, trackbacks - 0

Semiuniversal DC Power Supply

Has anybody ever noticed how every small device seems to come with its own space-wasting, low-output AC adapter? They often take up the two adjacent plugs on standard-sized power strips, and sometimes get needlessly hot.

I have an ATX power supply laying around, so I decided to ditch some of the smaller hardware in favor of a larger, more centralized system based around it. Using a pair of scissors, I cut the AC blocks off a few old adapters that were either broken or intended to power hardware that I no longer own, and then stripped the ends of the resulting end of the cable such that the wires were exposed. On average, the wires in these cables need to be folded over twice to fit securely inside a Molex adapter, while some even thinner cables can be used directly with the Berg adapters instead without any folding required. I used duct tape to keep the wires in place. Finally, I shorted the green pin to ground on the master cable, so that the supply remains turned on in the absence of a motherboard.

Of important note, ATX 1.0 power supplies only output 5v and 12v lines directly; thankfully my headphones and Ethernet hub are all 12v, while my capture card and various device chargers are 5v. On the other hand, my speakers use a 9v line, so I'll probably need to throw in a resistor onto a 12v output to connect those. For what little it's worth, I also have an on/off switch in the works.

While completely unexpected, I later found that the fan on the supply doubles as a desk fan. Gaining four AC outlets and a fan isn't that bad a deal.

Print | posted on Sunday, 27 January, 2008 11:27 AM | Filed Under [ Gadgets ]

Feedback

Gravatar

# re: Semiuniversal DC Power Supply

Has anybody ever noticed how every small device seems to come with its own space-wasting, low-output AC adapter? They often take up the two adjacent plugs on standard-sized power strips, and sometimes get needlessly hot.
<br /><br />Well, that's why you need powerboards with extra spacing for adapters.<br /><br />The transformer or AC-DC convertor always takes space and generates (or wastes energy into) heat.
2/3/2008 11:26 PM | Antony Shen

Post Comment

Title  
Name  
Email
Url
Comment   
Please add 5 and 1 and type the answer here: