What is a good power supply? - Page 1
Forum section: electronics / general

author: Mint.
author_rank: Frequent Contributor
timestamp: January 13, 2012, 09:22:58 am
content: I need a power supply. Can somebody please recommend me one?I currently work on only basic circuits. Mostly in the beginner stage. The most I have needed so far was 12 volts, I use either a wall wart (not sure if this is the correct term) or a few batteries is series. I would like to reduce the amount of wires, and the amount of components in regards to power supply. Like I said at the moment I only do simple circuits, which is just making simple oscillators, experimenting with voltage drops, and LEDs. I plan into getting into a more musical side of electronics, by that I mean audio and other type of circuits such as synths and guitar pedals.

author: Unknown
author_rank: Unknown
timestamp: January 13, 2012, 09:34:52 am
content: Repeating a thread youalready postedwith the useless question because you didn't like the answers is rude in my opinion.

author: hacklordsniper
author_rank: Frequent Contributor
timestamp: January 13, 2012, 09:56:13 am
content: I reccomend this onehttp://www.ebay.com/itm/CISCO-800-15141-02-4oc192-POS-DPT-SR-4-PT-OC-192-STM-64-MOD-1-IPUIADARAA-/250965979231?pt=COMP_EN_Networking_Components&hash=item3a6ebcf05fUnfortunately that is the only answer my cristal ball gave to your question

author: Mint.
author_rank: Frequent Contributor
timestamp: January 13, 2012, 10:01:56 am
content: Quote from: hacklordsniper on January 13, 2012, 09:56:13 amWoah dude, what the heck is that!?

author: PeterG
author_rank: Frequent Contributor
timestamp: January 13, 2012, 10:13:58 am
content: LOL i'll take a dozen....

author: Mint.
author_rank: Frequent Contributor
timestamp: January 13, 2012, 10:04:55 pm
content: Bumpin'

author: saturation
author_rank: Super Contributor
timestamp: January 13, 2012, 10:24:19 pm
content: https://www.eevblog.com/forum/index.php?topic=5119.msg66978#msg66978https://www.eevblog.com/forum/index.php?topic=2401.msg32768#msg32768Since you have an Oz flag, I don't know what's available there. The above provides basic specs.

author: NiHaoMike
author_rank: Super Contributor
timestamp: January 13, 2012, 10:33:46 pm
content: You'll want low noise power supplies for low level audio. If you're planning to do audio amplification, you'll need a fair amount of voltage and current. A laptop power supply would work nicely for small amplifiers, but the larger ones would want more voltage. (TI's TAS5630 is designed for up to 48V, easily obtainable from a surplus telecom power supply.)

author: Mint.
author_rank: Frequent Contributor
timestamp: January 13, 2012, 10:44:32 pm
content: Quote from: NiHaoMike on January 13, 2012, 10:33:46 pmI think it would be best if I buy something low voltage now, and then maybe buy a higher voltage later on.

author: requim
author_rank: Regular Contributor
timestamp: January 14, 2012, 12:49:43 am
content: If you want an excellent power supply I'd recommend a HP / Agilent e3600 series power supply via eBay. I find the e3620a to be the most convenient for my needs, however I also have some e3610a's and a e3630a each of which are useful in different situations. I have no idea what your requirements are but these are good from 0 - 15+ volts and 0 - 2 amps or so if I remember correctly. Depends on the specific power supply and range. They're linear and low noise power supplies.

author: hacklordsniper
author_rank: Frequent Contributor
timestamp: January 14, 2012, 07:31:14 am
content: Quote from: Mint. on January 13, 2012, 10:01:56 amThe most expensive search of ebay-s power supply, however it is not a power supplyhttp://www.cisco.com/en/US/prod/collateral/routers/ps5763/ps5862/product_data_sheet09186a008022d5f0.pdf

author: PeteInTexas
author_rank: Frequent Contributor
timestamp: January 15, 2012, 06:14:23 am
content: Quote from: Mint. on January 13, 2012, 09:22:58 amHow about building a $50 kit?http://www.testequipmentdepot.com/elenco/power-supplies/xp720.htmThe 5 volt output is capable of 3A.

author: EEVblog
author_rank: Unknown
timestamp: January 15, 2012, 07:46:16 am
content: http://www.testequipmentdepot.com/elenco/pdfs/xp720k.pdfThat's some kick-arse kit documentation!Dave.

author: Bancroftjo
author_rank: Contributor
timestamp: January 15, 2012, 10:15:17 pm
content: The one thing that I would suggest is to find out if there are any industrial surplus stores in your area, you might be able to get a nice used supply cheap.

author: PeteInTexas
author_rank: Frequent Contributor
timestamp: January 17, 2012, 05:57:26 am
content: Quote from: EEVblog on January 15, 2012, 07:46:16 amIts top notch but no where as good as a power supply kit about the hit the market that comes with a series of videos by the designer himself!

author: Mechatrommer
author_rank: Super Contributor
timestamp: January 17, 2012, 08:53:16 am
content: Quote from: PeteInTexas on January 17, 2012, 05:57:26 amas long as its somewhere near $50

author: PeterG
author_rank: Frequent Contributor
timestamp: January 17, 2012, 10:00:59 am
content: I dont see it being much over $50.Regards

author: Kilroy
author_rank: Regular Contributor
timestamp: January 17, 2012, 04:22:47 pm
content: If you are not opposed to getting something used then you could do a whole lot worse than picking up a Power Designs 2005 or 2010 precision regulated DC supply. Brilliantly compact, oven stabilized, low noise designs. Even examples that appear to have been thrown out of moving vehicles (several times) test well within their design specifications, and they take up little room on your bench.Another handy supply is the B&K Precision 1760a. Three output supply you can run as independent 2X 0-30V/2A, 1X 4.5-6.5V/5A supplies, in serial/parallel modes with tracking, constant current/constant voltage...lots of linear supply workhorse goodness to be had. I've seen these so mistreated it was unbelievable, and yet they keep on going, and going, and going.... Make sure you look for one that was made (entirely) in the USA. Folks cared more back then.

author: The_Penguin
author_rank: Regular Contributor
timestamp: January 17, 2012, 07:47:53 pm
content: Quote from: PeteInTexas on January 17, 2012, 05:57:26 amYeah but the videos are kinda brief. Some of them are under 1 hour!

author: Mr J
author_rank: Regular Contributor
timestamp: January 18, 2012, 04:34:31 am
content: We usehttp://www.elexp.com/tst_3010.htmit's similar to elenco in Dave's postGreat little supplies for general purpose opamp, audio, TTL, etc. I have student's beat the living bejesus out of it, been dropped 6 feet multiple times, stepped on, beaten with tools had one run over by a car and still worked. There easy to fix, you can mod it with a precision pot. The only thing is the instructions are kind of hard to understand in chin-glish and poor paper copy quality. We have some in the shop that are pushing 20 years old of everyday use and it comes as a kit or assembled.

author: EEVblog
author_rank: Unknown
timestamp: January 18, 2012, 12:16:53 pm
content: Quote from: PeterG on January 17, 2012, 10:00:59 amI'm afraid you'll be way off the mark.Add up all the parts up from the regular suppliers and see what the price is, the parts cost is not far off that.$8 LCD, $6 case, $4 heatsink, and so on down.It's amazing how things can add up.Look at my uCurrent for example, it's $50 sell price, and there ain't that many parts in it.My original intention was for it to be much cheaper, but you don't really shave a huge amount off by dropping features.Dave.

author: saturation
author_rank: Super Contributor
timestamp: April 01, 2012, 06:43:07 pm
content: A category: precision power supplies, are no longer made by anyone: regulation to ~5-10ppm, noise <=100uVpp. So for electronic supplies, to answer the question: what is a good power supply? These were likely the best made.I finally had time to research your recommendation, I am surprised I never heard of them. I see many of these supplies were mostly sold in the US domestic market. The company went bankrupt in 1996 and had been in business since 1952. It reorganized, resurfaced as Technipower based in Connecticut then again bankrupt by mid-2000.Schematics for the several of the precision series models can be found and its easy to service, its all discrete plus a few op amps, but its key transistors are unobtanium; but it shouldn't be too hard to rig substitutes, if needed. The manual says its designed to military criteria, so its heavily derated; its no wonder most still work despite between 30-40+ years old.http://www.rako.com/Articles/29.htmlThe only other precision power supply I find is the HP 6114 family, which had superior specs but still commands very high prices on eBay and while better, they are a bear to service.http://www.home.agilent.com/agilent/product.jspx?nid=-536902299.536879741.00&lc=eng&cc=USQuote from: Kilroy on January 17, 2012, 04:22:47 pm