Hello EZ Robot members. I came up with the idea to post this mini project because my roommate needed a power supply to power leds and also 12v fans. Lots of members really need a good high amp dc bench power supply on a budget. My roommate went to a local electronics supplier and recently paid 90 dollars for a 7amp 12v DC power supply. Pc power supplies are generally reliable , handle 15 to 40 amps DC and are 1/5 the price. Take for example the Thermaltake 425 watt TR2 for 30 dollars at Best Buy in the USA.
Safety alert! Capacitors in psu can pop you pretty hard so avoid touching internals of a pc psu even when its not plugged in.
By jstarne1
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Sparkfun also makes a breakout board for using PC power supplies to benchtop power supplies.
www.sparkfun.com/products/9774
Anyone used a Mini-ATX PSU for powering a project?
www.mini-box.com/DC-DC
Great question rich. I don't know. Im not the original aurthor. It just worked for me and I shared it. I only modded my supply to use 5v and 12v I didn't go that far. Its always good to verify the wiring and voltage with a meter.
In which case, I would assume the image was incorrect (they can't all use the same colour wiring for different voltages).
For EZB applications only the 12v and 5v are really required, so to play it safe (as I haven't done this yet) I'd say to use just the following wires.
5v = Red/Black 12v = Yellow/Black
For anything else, double check voltages and use combinations of the 3.3, 5, 12 and ground sources to give what you need.
This may also come in handy...
Thanks for the illistration rich.
Hi all.... I have just received this in the mail...
dangerousprototypes.com/docs/ATX_Breakout_Board
Looks like the easiest and cheepest option yet.... just don't kill yourselves with all that current!
Nice find. It's not the cheapest option but sure is the easiest and safest.
i have so many PSU power supplies i converted one back about 3 years ago they make great power supplies and can easy find on in the trash off a old computer i went a little more adding a meters and making it variable the 12 volt source was also going to make it current adjustable too
ALSO if anyone needs any type of regulators i have almost every value and postive and negative types