What is a good power supply?

[Mint.]

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.

[alm]

Repeating a thread you already posted with the useless question because you didn't like the answers is rude in my opinion.

[hacklordsniper]

I reccomend this one http://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=item3a6ebcf05f

Unfortunately that is the only answer my cristal ball gave to your question   

[Mint.]

I reccomend this one http://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=item3a6ebcf05f

Unfortunately that is the only answer my cristal ball gave to your question   

Woah dude, what the heck is that!?

[PeterG]

LOL i'll take a dozen....

[Mint.]

Bumpin'

[saturation]

https://www.eevblog.com/forum/index.php?topic=5119.msg66978#msg66978

https://www.eevblog.com/forum/index.php?topic=2401.msg32768#msg32768

Since you have an Oz flag, I don't know what's available there.  The above provides basic specs.

[NiHaoMike]

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.)

[Mint.]

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.)

I think it would be best if I buy something low voltage now, and then maybe buy a higher voltage later on.

[requim]

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.

[hacklordsniper]

Woah dude, what the heck is that!?

The most expensive search of ebay-s power supply, however it is not a power supply

http://www.cisco.com/en/US/prod/collateral/routers/ps5763/ps5862/product_data_sheet09186a008022d5f0.pdf

[PeteInTexas]

I need a power supply. Can somebody please recommend me one?

How about building a $50 kit? http://www.testequipmentdepot.com/elenco/power-supplies/xp720.htm

The 5 volt output is capable of 3A.

[EEVblog]

http://www.testequipmentdepot.com/elenco/pdfs/xp720k.pdf

That's some kick-arse kit documentation!

Dave.

[Bancroftjo]

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.

[PeteInTexas]

http://www.testequipmentdepot.com/elenco/pdfs/xp720k.pdf

That's some kick-arse kit documentation!

Dave.

Its 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!

[Mechatrommer]

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!

as long as its somewhere near $50

[PeterG]

I dont see it being much over $50.

Regards

[Kilroy]

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.

[The_Penguin]

http://www.testequipmentdepot.com/elenco/pdfs/xp720k.pdf

That's some kick-arse kit documentation!

Dave.

Its 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!

Yeah but the videos are kinda brief.  Some of them are under 1 hour!   

[Mr J]

We use http://www.elexp.com/tst_3010.htm it's similar to elenco in Dave's post 

Great 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.

[EEVblog]

I dont see it being much over $50.

I'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.

[saturation]

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.html

The 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=US

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.