SparkFun Electronics Commentsurn:uuid:214d0e4e-f1b1-d287-ce26-ac5b4c9f82492024-03-29T08:48:34-06:00SparkFun ElectronicsMadbodger on TOL-09539 - Computer Power SupplyMadbodgerurn:uuid:1bcd6346-b980-2e57-2690-91f2076f6ed92012-03-30T11:07:58-06:00<p>Like most PC hardware, it protects the fuses by blowing up transistors.</p>
BigChad on TOL-09539 - Computer Power SupplyBigChadurn:uuid:26add1d1-f142-5a88-309b-32293511145e2011-08-07T16:01:49-06:00<p>Would the 12 volt output for this power supply work using a easy driver powering a Nema 17 Stepper motor?</p>
cjenkins on TOL-09539 - Computer Power Supplycjenkinsurn:uuid:253787a3-88a4-74d3-ed7d-02c7f79afb092011-04-30T02:13:11-06:00<p>"Short circuit protection on all outputs"<br>
"Overvoltage protection"<br>
"Overload protection"<br>
The protection is blowing up the transistors inside? What outputs are protected? My faulty PCB with a ATX power connector wired wrongly caused this PSU to get on fire... cool :S :S<br>
I've buyed this one because of the protection, but it seams to be just another cheap PSU :'(<br>
RIP power supply :'(</p>
Bunk on TOL-09539 - Computer Power SupplyBunkurn:uuid:cb2bfb95-70f5-ae05-3608-fe1d68da88f72011-02-09T21:19:24-07:00<p>overload protection huh? well somehow i killed it whilst copper plating. also when i opened it up to look for fried chips, i noticed the fan was unplugged. that would explain why the fan never turned on!</p>
Jamo on TOL-09539 - Computer Power SupplyJamourn:uuid:69d5153b-266d-3cb9-fe71-070904ebbda82011-01-21T15:33:38-07:00<p>I modded a computer PSU to power my Reprap and for breadboard power. I highly recommend doing so. I would also recommend buying from Sparkfun, I bought a similar unit from a local pc supply store for about twice as much.<br>
FYI, I used this site as a guide, it's less of a tutorial, but has lots of good info. http://web2.murraystate.edu/andy.batts/ps/powersupply.htm</p>
Hyratel on TOL-09539 - Computer Power SupplyHyratelurn:uuid:d18c766d-a5c9-5de6-ef89-f0b8f674c0112011-01-12T10:54:33-07:00<p>I don't know what the actual threading is, but it should work with the hex+Philips screws you can find by the bucketload on, in, or around just about any computer or computer supply store</p>
Dan Cole on TOL-09539 - Computer Power SupplyDan Coleurn:uuid:6d310187-9f53-6809-04c6-e7cd81de80ec2010-12-21T18:34:44-07:00<p>What size screw fits into the 4 holes in the back? Is it 6-32?</p>
numinit on TOL-09539 - Computer Power Supplynuminiturn:uuid:f6ac475d-ee3f-4884-96e0-8ccb78e69cbb2010-04-06T17:09:06-06:00<p>I am in the process of modifying a power supply that my high school's tech department gave me using the same tutorial. Haven't turned it on yet, but I'm almost there.</p>
SlyVixsky on TOL-09539 - Computer Power SupplySlyVixskyurn:uuid:04c3a22c-5538-91dd-1013-1c951e010e832010-02-17T23:22:14-07:00<p>I've actually ran several atx power supplies for days with now modifications. I grounded the PS-ON to enable the supply and had an old pc case fan running off the +5V bus</p>
Hyratel on TOL-09539 - Computer Power SupplyHyratelurn:uuid:310923e3-892c-d607-c15c-ba2be917e4682010-01-08T15:21:48-07:00<p>as MF said, this is an ATX PSU, and it may be that without a load across +5v/Gnd, it will not want to turn on. In the link, it is mentioned that not all units require this Built-in load. Suggested method is to include a 10ohm heavy-duty ceramic resistor, attached to the frame to sink heat. (suggested reading for such a task: <a href="http://www.instructables.com/id/ATX--%3E-Lab-Bench-Power-Supply-Conversion/" rel="nofollow">http://www.instructables.com/id/ATX--%3E-Lab-Bench-Power-Supply-Conversion/</a> )</p>
MF on TOL-09539 - Computer Power SupplyMFurn:uuid:91a33d34-7a39-50fd-8bfe-e9b79a24027f2009-12-23T17:17:39-07:00<p>If this PSU hasn't been modified you'll have to ground the PS_ON pin (pin no. 16, green cable) so it turns on the power on all the output rails. If you don't do so, only the +5VSB pin will have power.</p>