SparkFun Electronics Commentsurn:uuid:214d0e4e-f1b1-d287-ce26-ac5b4c9f82492024-03-19T07:02:14-06:00SparkFun ElectronicsWheelerSounds on TOL-11296 - Power Supply - 12V/5V (2A)WheelerSoundsurn:uuid:701b5513-422d-e28f-49ac-9f1aec8534c92017-09-16T14:27:36-06:00<p>I cut off the Molex and grabbed a multimeter, and the wires are as follows:
Red: +12V
Black: +5V
Yellow: GND
Please correct me if this isn't the case normally!</p>
Customer #592619 on TOL-11296 - Power Supply - 12V/5V (2A)Customer #592619urn:uuid:1db5cb48-66b9-a76e-a027-d929ece2306a2014-09-22T09:45:41-06:00<p>Cannot see what the problem is - apart from being nice to look at - dual 0-15v was about £8 at 4 amps - more than enough 7812 / 7805 parralleled , plus a few capacitors and a ramp up circuit to save on in-rush current - probably what fried the disk drives . Apart from looking a little tatty</p>
Lil Dutchie on TOL-11296 - Power Supply - 12V/5V (2A)Lil Dutchieurn:uuid:f6369747-0fe9-d927-a6ea-f0688ddc68512014-06-29T21:44:07-06:00<p>My multimeter measured 6.5 amps output on this guy - and there was a mysterious buzz coming from it. Anyone else observed this?</p>
Customer #27774 on TOL-11296 - Power Supply - 12V/5V (2A)Customer #27774urn:uuid:055ea13b-3590-0831-39c4-53a8a98a06b92014-03-10T15:11:32-06:00<p>DOA. Shoulda paid attention to other comments.</p>
Stuart_F on TOL-11296 - Power Supply - 12V/5V (2A)Stuart_Furn:uuid:c0b4987f-7367-df61-0946-c4285075c5652013-11-23T15:13:19-07:00<p>After reading the comments on here, I planned to replace the filter capacitors per <a href="http://www.fixya.com/support/t1782491-power_cord_buzzes_macpro_not_recognize" rel="nofollow">Tim's suggestion</a>. That turned out to be a better decision than I had originally thought. Once I opened the supply up (and prior to plugging it in for the first time), I discovered the 12V rail filter capacitor (1000uF, 16V) was already popped. According to Tim, when the power supply is left connected to the mains supply with no load, the 12V rail can rise to 18V and the 5V can go to 8V on a 250V main supply (he's from Australia). These are over the rated voltage for the 12V filter capacitor (probably explaining why it was blown when I got it) and close to the rated voltage of the 5V filter capacitor (1000uF, 10V) respectively. To cover my bases, I'm replacing both with capacitors rated for 25V before I ever plug it in. I'll try to give an update once they arrive and I get them swapped out.</p>
chris k on TOL-11296 - Power Supply - 12V/5V (2A)chris kurn:uuid:04e7b581-ae9d-9f29-782e-f3bebb7f96fc2013-07-31T00:37:42-06:00<p>I buy and resell stuff from China because it's better quality than stuff available to resell that's made in USA. Even wires, which disappointed the patriot in me.</p>
chris k on TOL-11296 - Power Supply - 12V/5V (2A)chris kurn:uuid:b05e2645-8356-ba80-efb4-76edfdb03b472013-07-31T00:32:46-06:00<p><strong>Mine works</strong> and I love it, so I bought another. <a href="https://forum.sparkfun.com/viewtopic.php?f=14&t=36254" rel="nofollow">It's hooked up like as shown on this forum post</a>. Oh no, maybe it works because I'm feeding it to Arduino stuff with voltage regulators? I think I'm lucky because I didn't confuse the 4 pin molex with <em>"oh use this instead of the PSU in a computer"</em>, rather as <strong>"oh goody, I can chop wires of computer crap and use this to power my Arduino project!"</strong><p>Thanks to all the hate on here, I'll see what I can do to kill the 2nd one I just bought (because I'm so happy with the 1st one).</p><p>PS - I just created a CAD drawing of this; it's on <a href="http://grabcad.com/library/power-supply-12v-5v-1" rel="nofollow">GrabCAD</a></p></p>
RobertC. on TOL-11296 - Power Supply - 12V/5V (2A)RobertC.urn:uuid:a99b0507-8078-3a93-23b0-fa9d0a75e12f2013-06-20T12:04:46-06:00<p>I know your comment is a bit old, but have you contacted customer service? This shouldn't have happened.</p>
Customer #105105 on TOL-11296 - Power Supply - 12V/5V (2A)Customer #105105urn:uuid:d3b41c57-2164-6de5-38dc-ed78c09c11bd2013-06-05T13:10:09-06:00<p>I'd avoid these for applications with sensitive inputs. I totally agree with above comments on output load balancing - I fried TWO Raspberry Pi Model Bs in the span of 30 minutes with this power supply = NOT HAPPY!!!
Also, if you hack apart the cord, you'll find the wire color coding is anything but standard!</p>
REDACTED-GDPR on TOL-11296 - Power Supply - 12V/5V (2A)REDACTED-GDPRurn:uuid:220d4182-b034-5091-a689-ab664a5aa3832013-05-29T16:07:28-06:00<p>Is there any chance you will be offering a 4-5A version? Thanks!</p>
Customer #387743 on TOL-11296 - Power Supply - 12V/5V (2A)Customer #387743urn:uuid:be10a8a7-4293-1ffd-000c-d0e264e31a662013-05-22T03:28:56-06:00<p>Never buy this. Voltage drops from 5V to 3.5V under less than 1A load. Bought two of these, going to throw away both.</p>
Customer #423149 on TOL-11296 - Power Supply - 12V/5V (2A)Customer #423149urn:uuid:324325d0-f0b4-8b14-55fc-37b10b26b3362013-04-24T08:33:23-06:00<p>Mine "popped" within the first 2 minutes of using it. I was only powering a small experiment board using maybe 100 mA. These would be supremely handy if it didn't destroy itself. I live in Europe, it would cost more to send it back than to find another solution.</p>
rsp on TOL-11296 - Power Supply - 12V/5V (2A)rspurn:uuid:4e234ccc-7e20-7860-e013-e10933826d262013-03-04T23:08:05-07:00<p>I can see how these would burn out disk drives. The rails have to be load balanced in order to maintain the voltage regulation. If they're not, the voltages go way out of spec. So it'd be real easy to brown out or overdrive whatever it's plugged into.<p>Cracking one open, it looks pretty decent inside. It's fully isolated and has the usual safety protection circuitry. There are two big heat sinks that run along the sides of the case, so it would be normal for the case to get pretty hot. It's not waterproof so it's only for dry environment use.</p></p>
CF on TOL-11296 - Power Supply - 12V/5V (2A)CFurn:uuid:7e6a2155-0f9e-5b49-7dca-859d55bf9b1a2012-10-30T12:24:44-06:00<p>I'm needing to replace the supply on my USB backup drive. This would do nicely. My only concern is how is the quality? I don't want to fry my backup disk. Gota be careful with something that's powered 24/7 and unsupervised.</p>
Customer #364047 on TOL-11296 - Power Supply - 12V/5V (2A)Customer #364047urn:uuid:88417f23-8a83-6425-0a8c-c0d370690eee2012-10-04T20:56:57-06:00<p>works like a charm. The diagram is outdated though so you'll need to test all the wires to see which is 12, 5v, and ground</p>
Customer #45741 on TOL-11296 - Power Supply - 12V/5V (2A)Customer #45741urn:uuid:10b23865-bac4-008c-6775-64d22a6168512012-08-12T11:38:06-06:00<p>I don't believe the issue is regulation, it would seem the China brands use a cheap version of filter capacitor. I've had one just like this fail that was powering an ext h.d. after being on for 24/7 for about a year. The output caps fail causing poorly filtered DC on the outputs. If you are lucky, the ext HD and board just stop working when the supply fails. If you intend to keep these powered up 24/7, the caps can be replaced with far better ones if you are up to cracking the case open to reveal the parts. Caps would cost about $5.00 from Digikey. Search Lacie supply on youtube for instructions that show how this is done with similar supply.</p>
steven6282 on TOL-11296 - Power Supply - 12V/5V (2A)steven6282urn:uuid:36249f6f-aba4-31e7-bc20-ecb087c3a3d52012-08-11T13:17:15-06:00<p>I'm really curious how these supplies fry disk drives? Is the voltage regulator in them letting more than 12v of power through?<p>I've got the same exact brick that I bought off newegg with a HDD to USB adapter kit and I've used it on many disks without ever having a problem. I'm now needing 12v ~1A for a project I'm working on and the 5V rail is convenient cause another part of my project needs 5v / 3.3v mixed. So I was thinking about using the brick that I got from newegg for it, but I've never used it for extended periods to see the downsides and would rather not see my entire project go up in smoke once I have it in place permanently.</p><p>If it's just a matter of voltage regulation I'll just be sure to put some extra voltage regulators in my project and maybe some fuses as well to protect from surges.</p></p>
JRiggles on TOL-11296 - Power Supply - 12V/5V (2A)JRigglesurn:uuid:9941c6c8-b8c9-b22e-565c-7e3e8057cd4d2012-07-29T22:52:18-06:00<p>Will this supply enough current to comfortably power a project using the thermal printer you guys sell?</p>
Ty J. on TOL-11296 - Power Supply - 12V/5V (2A)Ty J.urn:uuid:ccd9bf47-6ba1-e4a1-723f-ee5abb08cdf92012-07-29T20:58:43-06:00<p>Be forewarned. I've used these at work; they came in the box with some USB to IDE/SATA adapters. We ended up throwing away all of them after they fried two disk drives. (15K SAS disks rated at 1.7A 12/5V) These bricks get scorching hot around 1.5A on both rails. Notice there is a distinct lack of certifications like UL and TUV.</p>
Customer #278726 on TOL-11296 - Power Supply - 12V/5V (2A)Customer #278726urn:uuid:6c22c277-0837-8fa9-2db6-92ea61ad02132012-07-15T18:23:23-06:00<p>wait, If I use 2 of these in parallel will it provide 4 amps?</p>
Nate on TOL-11296 - Power Supply - 12V/5V (2A)Nateurn:uuid:59dcbb48-dac9-643d-3031-1201a6cebf0e2012-07-13T16:05:01-06:00<p>That's actually what caused us to look into these. I was driving some LED strips from the <a href="http://www.sparkfun.com/products/10305" rel="nofollow">MOSFET shield</a> and the ATX power supply was pretty cumbersome and WAY more power than I needed. So these are what we found (a lot more compact). Now I just have to find time to rev the MOSFET shield...</p>
marciomaiajr on TOL-11296 - Power Supply - 12V/5V (2A)marciomaiajrurn:uuid:891b9faf-8579-556d-ac72-eec422053d0c2012-07-13T13:34:05-06:00<p>Very good idea. 2A is more than enough for most projects. I'd rather buy one of these than messing up with the computer's power supply.</p>
Customer #112321 on TOL-11296 - Power Supply - 12V/5V (2A)Customer #112321urn:uuid:27ff940b-fb7d-3209-0b25-fdda83c0b63c2012-07-13T11:14:39-06:00<p>12V2A = 24 W,
5V2A = 10 W,
24 W + 10 W = 34 W<p>Thats my guess.</p></p>
Customer #260321 on TOL-11296 - Power Supply - 12V/5V (2A)Customer #260321urn:uuid:6e1fb99a-1e9a-7c77-ce79-d5f8cb135e5e2012-07-13T10:44:17-06:00<p>How good is the regulation on this brick?</p>
J.R. on TOL-11296 - Power Supply - 12V/5V (2A)J.R.urn:uuid:231156e9-55d7-e762-a354-c7ddbdb14ae92012-07-13T10:42:34-06:00<p>Possible typo? 12V*2A = 24 W, not 34</p>
Customer #304648 on TOL-11296 - Power Supply - 12V/5V (2A)Customer #304648urn:uuid:b7c13da5-40d6-495d-1921-ed961da890562012-07-13T10:23:07-06:00<p>Did your product sourcing amigo do any quality inspection of this device? I have learned to be weary of cheap chargers and other such stuff from China.</p>
Customer #278726 on TOL-11296 - Power Supply - 12V/5V (2A)Customer #278726urn:uuid:04fdf1fe-1e9e-b837-4cf0-12a66f11a9832012-07-13T09:46:23-06:00<p>I like this. keep getting bigger ones, I wouldn't mind a power supply that can give out 5,9, and 12 volts or 5 amps.</p>
Nate on TOL-11296 - Power Supply - 12V/5V (2A)Nateurn:uuid:b1d519c1-3da8-94d7-a34e-fcda1c0a90e92012-07-13T09:41:24-06:00<p>Good point. Note added.</p>
tld on TOL-11296 - Power Supply - 12V/5V (2A)tldurn:uuid:c939b07d-3461-7130-d9ff-8546b40ab6312012-07-12T17:48:07-06:00<p>Might be worth noting that while "Molex Connector Pinout" shows both center-pins as ground, only one of them is actually ground in this PSU.</p>