I'm confused too. Why can't you use a computer PSU??? What if it has tons of amps and such? And ginormous 12V rails?
Printable View
I'm confused too. Why can't you use a computer PSU??? What if it has tons of amps and such? And ginormous 12V rails?
Then what about all those guys saying that it worked for them with the enermaxes and what not? =(
The style of most PSU's requires a load on every rail and you can use PSU's if you mod them to include a load (2-5 amps on 5v and 3.3v) as well as much larger wires for the transfer. Molex wires will burn and catch fire.
There is a Meanwell for any amount of power, voltage or current you could need in PC water/thermoelectric cooling and it's not that much more than an ATX PSU, while requiring much less modding.
Linear Home-made ftw tbh
240V(AC)
[Transformer]
12V(AC)
[Bridge Rectifier Circle Thingy]
12V(DC)
[3x 30000uF Caps]
Output= Smooth(ish) 12V(DC) @ 35a
Cost= £15
Housed in an old PSU case
ZOMG I've been trying to look for that kinda tranformer for weeks!! WTF I can't find them. All I find are these dinky transformers with low VA ratings. Grrrr. Where'd you find yours?
Quote:
Originally Posted by HaxR3
Horrible efficiency there and if you pay your own electric bill your going to regret it. And good luck finding so cheap!
I really dont know sorry, my dad had it in the garage =/
Thats why it was cheap, only had to get caps & rectifiers
& yeah i want to find some more high amperage transformers in the uk :(
For those in the UK
24v or 12v @ 22a £59.99 inc delivery
Perfect for a 24v 436w pelt
:D
http://www.speeding.co.uk/acatalog/Powering.html
Third from the bottom.
Might get one of these myself :D
Hey would the thermaltake 250W vga only psu work?
I have OCZ Modstream 520W,Core 2 Duo E6400@ 2 X 4 GHz,2 SATAII HDDs and one Radeon X1600Pro,I want to get a Titan Amanda TEC.As far as I know,it requires 5A from the 12V rail,and takes 70W.PSU Specs:
95~132Vac / 190~264Vac 10/6a
+3.3V(28A), +5V(52A), +12V(28A)
:confused: :confused: :confused:
Don't get a Titan Amanda. It suxxors. If you want TEC, I've heard you should water cool the TEC, and for max efficiency put a strong TEC at low voltage, with dedicated PSU.
Ok which TEC PSU. I give up with the whole using computer PSU idea. What PSU do I need?
I've got 3 TECs: 320W, 168W x2
L33T look into a meanwell 600w.
Wait a sec, some guy from XF said that if you have a 320W TEC, you need 320W from your PSU. I think his mistaken on two accounts... but taking into account efficiencies, would 600W indeed suffice?Quote:
Originally Posted by littleowl
I'm looking at this one:
PSP-600 (http://www.meanwell.com/search/psp-600/default.htm)
Should I get the 12V, 13.5V, or the 15V? I think the 15V might overvolt the 168V one... Also, I wanna hook up the pump to this PSU as well -- its a Petra's DDC2, so it draws 1.5A of current.
EDIT -- I looked at several models supplying at least 600W of power, but that is actually the only one that seems to fit. The max space I can make available is 7x5x~4.25 [in]
you plan on undervolting the tecs right? I would say seperate power supplys one for gpu or gpus and one for cpu and pump. I would think more in lines of price of 2 320w meanwells or go with a 600w meanwell depending on your tec what voltage you need.Quote:
Originally Posted by L33T
I would stick with the 12v but you can go higher and undervolt it.
Hi. I was thinking of getting a TEC cooler, but how big a tec can i use? I got an 650 watt Coolermaster Realpower powersupply. And an Intel Pentium 4 530J processor.
If you're planning on running a PC on the same PSU, then I wouldn't reccomend using a large TEC. If you're talking about an air-cooled TEC, then you should be fine, but a large TEC (which would have to be watercooled) would most likely not hold up without a PSU dedicated to it.Quote:
Originally Posted by Esser
I do have watercooling. But why do you need a dedicated PSU?? :confused:Quote:
Originally Posted by Mr. Peanut
Bump! What tec can i run using an ultra x3 1000 watt 70amp combined on the12v rail.I want to try and run this under a tuniq 120.Oviously i have to insulate around cpu slot,but will there be a need for dialectric greese.This would be like a vigor monsoonII,or am i on the wrong track here?
any help here will be appreciated. Thx n advance
Shoulda thought of this before I posted.Can i run 2 12 volt lines in a series like a battery for a 24v pelt.I looked and was to lasy to do te math prolly a stupid question.If possible then i think i would need some greese.Heat will be suked out via side window with high cfm fan
I actually had a small variac at home which i made a small case for and wired it all up. I put 120 volts in and pull 12 volts out at 35 amps and can lower the voltage as i thought it would be a cool idea to save power by lowering the volts to the tec when i wasn't using the PC.
Could you run say a 400w pelt with an Ultra Power Partner 325-Watt. I know the wattage is too low but could it you still run it under 400w with just the psu or maybe the psu and resistor.
Hello folks, I need some little clarification here.
I'm very interested in T.E.C., it kinda fascinates me. I have an Antec P190 case, with its dual Neo-Link PSU: one 650W unit, and one 550W. The result is that the 550W unit is only used for a DVD-ROM, a couple HDDs, and the little Swiftech MCP 350 liquid cooling pump.
I don't know why it was designed to be 550W, honestly, and I'm now wondering if it will be able to run this 245W peltier:
http://www.ybris-cooling.it/product_...468ba5bf0e829e
As you can see, it's rated for 26 amps Imax, but I suppose it's referred to the maximum 15V voltage. Insted, hooking it up to a 12V rail of the PSU, and using the (V*Imax/Vmax) formula, it should draw 20.26A... Average or maximum?
If I remember correctly, the 550W PSU of the Antec Neo-Link duo is rated for 18A on the 12V rails.
Stating that its load, other than the peltier, would be, as mentioned, only a couple of HDDs, a DVD-ROM, and a Swiftech 350 water pump, what do you think about feeding that peltier with it?
If I had to buy a separate PSU, I think I would drop the T.E.C. "fantasy". If not, it could be a nice, future experience.
Thank you in advance for helping,
Giacomo
http://www.jimmspc-store.fi/tuote/W0...subgroup=11201
Im shure that PSU can handle 12v TEC's easy, at least rails 12v3 and 12v4 witch are rated to insane 40Amps each.
How ugly is the voltage produced by car battery chargers?
Running TECs dont require the highest quality DC output, but low frequency pulsations would be bad for the TECs.
can car battery chargers provide that kind of current?
i had one that was only 1 or 2 amps @ ~12v
Sweden is not a big country so electronics supply stores are scarce and expensive. But a car battery charger is easy to get a cheap one.
Since the dollar has gone down swedish prices might be overprices. A battery charger that can do 19A at 24V is roughly $270 in one store. Thats the "desktop" model.
And the "fulltower" costs $300 and can do 40A at 24V.
http://www.biltema.se/products/produ...&iItemId=89312
But at that size I dont really see it as a viable option. Unless you have your own playroom. Which I dont. :)
Damn, I wish it was this easy in sweden:
http://item.express.ebay.com/Daiwa-S...mdZExpressItem
i have enermax 1000w PSU, can i use 225w for a TEC cooling? if no , what do you suggest?
thank you in advance
snipor
The problem with using your 1000w psu is that the wires are not made to handle the current that the tec draws. We (as a forum) will not tell you no you cant because you can but you will need to cut the wires up and splice 2 together to be able to handle the current. As for a psu suggestion I would tell you look for a meanwell 600w 15v or if you know your not going to use a tec that is bigger then 226w then get the 320w 12v.
Quote:
Originally Posted by littleowl
thank you for the reply, i would like to work with the 226w pelt under 12v line, reading from the other thread here about the undervoltings:
226 watt / 15.2 VMax / 24 IMax
5 volts: 24.5 watts; 7.89 amps
6 volts: 35.2 watts; 9.47 amps
7 volts: 47.9 watts; 11.05 amps
8 volts: 62.6 watts; 12.63 amps
9 volts: 79.2 watts; 14.21 amps
10 volts: 97.8 watts; 15.78 amps
11 volts: 118.4 watts; 17.36 amps
12 volts: 140.9 watts; 18.94 amps
13 volts: 165.3 watts; 20.52 amps
14 volts: 191.7 watts; 22.10 amps
15 volts: 220.1 watts; 23.68 amps
so a 226w pelt will run at 140.9w and thats ok for me, so no need for using max of 15v to get the 220.1w, so i think the 226w pelt is ok for running under my PSU.
please correct me if iam wrong. ^^
your kind of wrong. your write in one aspect but the 140w it the heat transfeer not the used watts. you will pull about 320w from the psu.
Like I said your psu wires can't handle the current that the tec will pull over them. If you look at the amps your psu said it has on the +12v line, lets say your running a single rail and the 12v line has a max of 23amp. your psu can put out a possable of 23amp that doesn't mean that is what you will be able to get. also keep in mind that if your running the tec on the same psu as your pc, you have ram, mobo, cpu, video card, sound card, hdd, cd-rom drives they are all going to be taking some of them amps. say your mobo runs 5amp your psu 10 and your video take 7amp you have 23-22=1 amp for the tec to pull.
As you can see there are lots of things to take into consideration.. I hope your understanding. :shrug:
Quote:
Originally Posted by littleowl
got it!, now is it ok to use a generic 500w PSU for it? or should i buy meanwell Psu for it?
for testing and playing cut up a psu for it but for a 24/7 I must say get a meanwell. get the tec and play around with it on your 500w psu but remember to cut the malox (sp?) connector off and get 2 yellow wires to connect to the tec.Quote:
Originally Posted by SNIPoR
Hope you dont hook a pelt with psu wires/adapter....Quote:
Originally Posted by whoodiestyle
look mine
SNIPoR, you can use your system PSU if you're willing to do some work...
- Understand electrical components enough to properly splice PSU wires/connectors
- Determine amperage draw across your system so that there is enough left over for the TEC
- Combine two or more rails to power a 20amp TEC load
- The whole system should stay under 80% capacity of your PSU
Running the TEC and PC off your computer will cause your PSU to work very hard. It can be done, but there is a lot of planning involved to make sure everything will work BEFORE toasting a perfectly good PSU/computer. My setup is running quite happily of a 1200watt turbocool for months now. :up:
If the TEC is truly 400 watt you would need a meanwell PSU of 750 watts or more. However, ebay listed TECs tend to be grossly overstated as to power.
it says 177Qcmax but as for the part no i founded it on google as a 270Qcmax :/
You need to wary of the temperature of the quoted specs...Quote:
Originally Posted by Vatos_locos
EBAY are absolutely terrible at this I notice they don't even stat the temperature of the quoted specs.
In reality just to get the sale they take whatever they can from the manufacturers specs to make their TEC's look better than they are.
Then I suspect they also relist using templates without checking the specs of the unit they are selling.
I never trust whatever Ebay say because the specs given are so conflicting.
For example specs manufacturers often quote both 25ºC or 27ºC plus 50ºC specs. The 50ºC specs are always higher.
Ebay sellers tend to use a selection of both and then quote the wattage rating as the volts times current. Leaving the unsuspecting buyer with a load of totally useless specs.
Take the TEC you mention if the Qcmax is correct (177w) it is a 12720 the 50ºC specs of 12720 TEC (cant find them at the mo') have every possiblility of showing 26 amps for Imax.....but why state it as a 12726 then show the Qcmax for a 12720 - that doesn't make sense. If it is a 12720 and you run 26amps through it you may not a TEC anymore.
If you've any sense you avoid Ebay like the plague for TEC's.
get them from a decent supplier then you know where you are.
ok i hardly understand everything :p: but i got the point
the tec i have it is written on it TEC1-12726 so the seller was correct about the specs i guess
In that case they more than likely relisted from a template and didn't check the specs.Quote:
Originally Posted by Vatos_locos
If it's got 12726 on it just use the the usual 12726 specs from a better supplier - all TEC's used for cooling are made in the same basic way with the same basic materials so pretty much whoever makes them the specs will be comparable.
Hey im doing my first tec build. I wanted to get one of the ultra 1600 psu that give off 117 amps on one single 12 v rail. I have a 240 wall receptacle to plug it to utilize the psu full wattage. I wanted to know would this be strong enough to power my sli i7 rig and a tec chiller at the same time? Im trying to avoid using to separate power supply due to space constraints.
Thanks
Firstly you should really start a new thread...resurrecting old threads is not a good idea....but you weren't the first....before vatos resurrected it, this was a year old.Quote:
Originally Posted by kayzrx8
The problem is not the power per se....it's the wires...
Most standard PSU wires and molex plugs are only rated 8amps absolute max.
Very few computer peripherals demand this and many more draw nothing like this value.
Most TEC's on the other hand have large current requirements and the wires simply aren't up it and of course you cant use the molex plugs either. I believe you can get away with 12amp with a PCI-E plug but most people want them for the GPU.
Indeed it is a bit of stupid situation when TEC's themselves don't really have big enough wires on them either - most TEC users cut them off short and solder better grade wiring on.
To use a PC supply you can double up wires, cut off the molex and solder them together but generally it's not pretty.
A dedicated power supply really is the way to go with TEC's and besides a PC PSU limits you to 12v supply the better, bigger TEC's require more than 12v.
To be honest you will have a hard time with i7 especially overclocked - direct die is probably not the best route, a chiller to include the Sli will have to well made and quite powerful and Yes.... you will probably have to make it yourself.
If your planning a TEC chiller it won't be inside your rig anyway...will it ??? So the extra PSU shouldn't really be a problem.
If you are making a chiller a variable voltage supply is really the order of the day so that puts out a PC supply.
Start a new thread about this Chiller please so we can help you outQuote:
Originally Posted by kayzrx8
Electronics surplus... These 300W 15v switching power supplies cost like $10 each, and work on 110-240v. One per pelt, plenty of overhead. No need to use a PC power supply at 12v on weak rails, when you can push the pelt at its rated potential for real, real cheap.
http://forums.bit-tech.net/picture.p...ictureid=15280
Kilmoor : where did you got those psus so cheap?
thx
I bought them last year at BG Micro. Just checked, they no longer have them. You can search electronics surplus, there are a ton of choices out there. Prices vary, but 15v is a wierd one, so they go a heck of a lot cheaper than 12v power supplies. Basically, an American made PSU from a photocopier with a commercial duty cycle doesn't have much resale value... but for peltiers is ideal!
thx mate .. i could not find the section you describe