12volt PS 1/2 price at Radio shack

[lotust]

http://www.radioshack.com/ProductCatalog/ProductDetail/Index/1,2098,CTLG_7_9100454,00.html?CAT=

this this look like a beast. I think I could run 10 peltiers + all the crap in my Puter+ an electric chair

 

[Bohemian]

Well, unless your computer runs on DC power (INPUT) I doubt it. It's not that powerful, but it is an excellent deal. I use a similar PS on my bench at work (I'm an electronics tech). They are not very often found under $100!

 

[flot]

I really like the irony here:

"...Well unless your computer runs on DC power..."

"...I'm an electronics Tech..."

Anyone else see anything wrong with this picture? ;-)

But I agree - not a very useful power supply for computer applications. For general techie stuff, looks like fun!

 

[djjazz]

hehe yeah, sounds like a foot in the mouth

 

[MaxxSteele]

Like 5 and 12 volts... + and - ?
I recently saw a TV documentary about education in the US.
5 out of 6 college graduates could not take a battery, two pieces of wire, a bulb and make it light!
The engineers of OUR future.

 

[lotust]

I was relly suprised by what Bohemian
said too. Computers dont run off 12 volts? Since when.

It goes in the power supply AC and comes out DC.

 

[lotust]

Bump for a 1/2 price PS Yeah baby

 

[lotust]

one last bump

 

[eia430]

Hmm, a computer not running on DC.... this is an interesting comment. If I'm not mistaken (and I'm not) one of the very first things the AC power runs into inside the powersupply is a full wave bridge rectifier. Since this converts the AC current into DC current and everything else down-line from the bridge rectifier MUST run on DC does this not make the computer something that runs on DC power? Hmm.. now there's something to think about....

 

[Bohemian]

OK Wiseguys. I was obviously referring to the input voltage. Sheesh.

 

[Colebert]

I'd just like to say a computer runs on DC power.

 

[slpaulson]

Think that sucka is AMD aproved? hehe =P

 

[Gustavus]

Saying anything technical in these forums is an invitation to get flamed, but I should point out that this PS is not the monster some of you think. It is rated 12 volts 5 amps continuous. A 70w Melcor 127 junction peltier -- a rather common TE -- is rated at 8amps 16 volts max and draws 6amps at 12volts. This supply might be able to handle a 6amp steady load, but it also might overheat if run beyond its rated continuous capacity. The nice feature about it is that the output voltage is variable which makes it useful for bench work -- but the current capacity is still the limiting feature. My Kenco bench supplies are variable 0-40 volts and deliver 10 amps at full voltage. Anyone thinking of buying this RS PS to power their peltier might want to think twice.

 

[gwbaker]

Yeah, I must agree... $100 for a 5amp supply is not that hot. You can get an Amptron supply with variable voltage and dual meters with a 50amp rating for not much more.

 

[bcoombs]

MaxxSteele,

Just because someone has a college degree doesn't mean that they will necessarily be doing any technical work whatsoever. Granted, you would think that most people with an 8th grade education could put a simple circuit together, but as far as the "Engineers of OUR future" comment, I think you're WAY off base. And I am an "Engineer of OUR present," although Civil, not Electrical. The world needs nontechnical people, too. At least that's what I've been told .

 

[bcoombs]

Sorry, double post.

 

[lotust]

ok I agree this power supply is a peice of shi_t . I just realized that it is only 5 amps.

 

[larrymoencurly]

It's a beast probably because it's a linear supply, not a switching supply.

 

[lotust]

at least it looks cool.

 

[Joker81]

You don't even need to have 2 wires. You can do it with just one wire one battery and one bulb.

 

[lotust]

Joker thats one hell of a sig

 

[Viperoni]

Input voltage is 110-120VAC

right off their site...