Hi, I am doing a school project and i need to power 8 LEDs with 10 thermoelectric plates, so i soldered 2 on one led and put them over a candle, the LED didn't light up and i don't know why. Is the voltage too low? If so will i be able to power 8 LEDs with ten of these in parallel?  Thanks for any help in advance!

I would like to know if anyone out there in Instructables Land knows about Thermoelectric Peltier Devices- what they do and how they work. I have 3 of them in my collection of various electronic components & devices. I consider myself as having a good knowledge of thermoelectric peltier devices. If anyone out there thinks they know more than I do, OR works at a place that manufactures them, please let me know at labrath4@yahoo.com I'm currently unemployed, and would like to work at a place that manufactures peltier components- preferably in the testing and engineering department.

Hi, I have read about technical specification of a thermoelectric peltier TEC1-12726 . The U max =15v , I max =26.3 and Qc max =257.27w. I would like to know about the cooling power in wat(cooling generating). It seems that the power consumption is about 400w. I have heard that  thermoelectric peltiers have good and high efficiency. I need some more information about any other powerfull peltiers with high efficiency to build an air condition unit. I need to make sure the power is the cooling power and/or power consumption. I would be so grateful to have  some good suggestions and ideas as well. Regards Kevin

I'm working on a project with peltier coolers. I want to get it as cold as I can. What would be my optimum power source? Amps over volts? If it helps I am planning to hardwire the device. and I'll have plenty of room for mounting fans on the hot sides heatsink Here are the specs 50mm x 50mm x 3.64mm 245 - 320 Watts of cooling power Operates from 0-15 volts DC and 0-26 amps Operates from -60 deg C to +180 deg C Thanks

I know it's a thermoelectric cooler. When I got it home the inside temp read 101. I left it on for several hours and it went down to 81. But it's set to go down to 46 (there is no lower setting than that) but it won't get cooler than 81 degrees (not even after being on for days). When I removed the back, it looks pretty simple, there is a large fan on top of a large heat sink on the back. From the inside, there is a second large fan that blows into the cooling compartment. I'm trying to figure out how it works so I can either fix it or turn it into something else.

i like to make a thermoelectric cooler to cool my room , pls provide details how to make it and how fast the cooling happen, also its advantages & disadvantages

I'm wondering if I can run a 12 volt DC thermoelectric cooler with a 19 volt power supply from an old laptop

I am trying to understand how TEC modules work, and I think I have it figured out now, but was hoping that someone with more electrical knowledge could verify that I have it right. I am looking at this TEC module. My current understanding of this is as follows: 1. If I regulate the current to this module to a max of 2A, the maximum amount of heat that the module will move at DTmax = 0 would be approximately 75W. 2. If I regulate the current to this module to a max of 2A, the module will not exceed a DT of ~20C. 3. If I regulate the current to this module to a max of 2A, the voltage could range between ~4-6V, but would not reach 10V due to the limitation of DT. 4. Therefore, this module, limited to a max of 2A, would use at max 12W (approximately). Is that all correct? Second, I am comparing the above module to this TEC module. For this second model, my understanding is: 1. If I regulate the voltage to this module to a max of 12V, the maximum amount of heat that the module will move at DTmax = 0 would be 28W. 2. If I regulate the voltage to this module to a max of 12V, the module will reach its DTmax of 67C (theoretically). 3. If I regulate the voltage to this module to a max of 12V, the current could range between ~0.75-1A, but would not reach 2A due to the limitation on voltage. 4. Therefore, this module, limited to a max of 12V, would use at max 12W (approximately). So basically, it is a trade-off between DTmax and heat moved at the same wattage. Is that correct?

Has anyone tried using a thermoelectric cooler, like this one http://www.allelectronics.com/cgi-bin/category.cgi?item=PJT-7to cool down a high powered LED star. I am considering mounting one on the back of a new Luxeon RebelI plan on ramping the current up to max (1 amp) on the led, and run the Thermoelectric cooler (TEC) as high as possible off a lead-acid battery. Strap a giant heat sink on it (maybe a fan too) plus thermal and silicone over the whole thing. It wouldn't be pretty, but it would be a neat experiment on how many lumens you could crank out of one of these things. Any inputs, suggestions, Ideas? Feel free to make an instructale on this if you want, I can't guarantee I will do it anytime soon.

Can a 40 mm square Peltier thermoelectric heat pump be used as a solar generator It operates on 13 Vdc @ 5 Amps. Operating at 13 Vdc, we measured the hot side at 190 Deg. F and the cold side at 55 Deg F. I have a 6 foot reflector dish and can add Reok led tracker. How many watts will it generate if it does?. Thanks for your help

I want to be able to control the temperature.

Thermo electric? Fridge, can I  put a fan to the door to cool my small room?? It has a big Thermoelectric component on a even bigger heat sink on it and it works as a fridge, will it work as a cooler as is or if I take out the cooler component and place say 12 psu fans on top of the cool side? thanks Al

Hello everyone, I found a Thermoelectric mini fridge at the dump a couple weeks ago and so far I have been disappointed with how cold it gets so I figured I would replace the peltier chip with a higher wattage one, the original ran on only 12v with 60watts but the new one uses 16v and 192 watts, so unfortunately when I switched the chips the fridge makes a clicking noise presumably from drawing to much current. the questions I have are, how can I build or cheaply obtain a variable (it would be nice to control power) 16v 12amp power supply or modify the existing board to output more power, would it pose a problem to run the fridge with no load attached to the previous 12v supply, and is it necessary to replace the fans with higher power ones? any other advise would be much appreciated, thanks in advance :)

Hello everyone!. i was thinking of making a air cooling system, based on thermoelectric elements. maybe use 3-4 thermoelectric plates (at 12V, i don't want to exceed 30amperes ). do you guys think that it will be enough to cool a car cabin?? or what do you think?? (yes, i know that the same can be achived using the existing technology with ac compressors :P )

The science for a layman

Hi, I was wondering if you could DIY a thermoelectric generator by dissecting  some PN junction diodes and sandwiching the P type material adjacent to the N type materials between heat conductive material, such as two circuit board wafers?

I recently found a article about a Japanese company creating a camp-fire ipod/phone charger. http://tes-ne.com/PDF/epan.pdf (not spam) It appears to use a peltier thermoelectric hooked up in reverse embedded in the layers of the bottom of the pot. And the black control box is either a joule thief or a circuit similar to a mintyboost. As it is so tiny I can not imagine it has a 7805 5v voltage regulator or other similar overly simple circuit. I thought why should I spend nearly $300 on something I can make for $10-$50? I have also noticed there is a thermoelectric powered lamp on this site. My question is this, does anyone see there being an issue if I modify the thermoelectric lamp project and instead hook it upto a mintyboost to charge a couple of rechargeable batteries. I am not sure what sort of amps lets say a 100w 12v peltier would put out when reversed. I have found one for $8.09 here. And if I did attempt this (and document it for an instructables), what might I need to do to modify the mintyboost to directly charge from the peltier? I know only very basic electronics, such as what every component on a mintyboost does. So this is basically a project to learn more about electronics. Should I simply follow a solar power mintyboost tutorial? I have a couple of ideas of how to create the temperature difference for my needs. I was thinking of buying a pack of sterno cans, so I can quickly produce the heat needed and charge my all-important ipod touch in an emergency "holy crap the entire electric grid was fried by a solar flare and I won't be able to charge it ever again" situation. And also experimenting with producing enough heat from direct sunlight using black materials and a "hotbox" (this method will come later as it takes more experimenting). Side note: This is not my only emergency ipod charging project I am putting together. I am also cannibalizing some garden solar chargers and their joulel thieves, but it's been done to death, and a thermoelectric charger is so much cooler is it not? .. or hotter..

I want to have some control over the temperature inside the Orchidium I'm designing and I thought it might be cool :) to use a Peltier Device (device aka module) (Peltier aka TEC or Thermoelectric Cooler). I find I need a lot of help! (Please!) Alright, this isn't a completed Instructable, it's a plea for help, and maybe if the subjects lie in some of your fields of knowledge then we can all enjoy and learn from it. So, the Orchidium I'm designing is an acrylic case 24"W x 18"D x 30"High. It's to grow species orchids indoors in a microclimate, with LED grow lights, proper humidity, air movement and temperature control. (Of course, other critters would like the case, too: poison dart frogs, newts, carniverous plants, etc.. But I'm going to call it the Orchidium.) I've got it all pretty well planned out so that it can be built for a very reasonable price (yes, including the LEDs) and still be aesthetically pleasing and real purdy, too. All planned out EXCEPT FOR THE TEMPERATURE CONTROL. I was looking for some way to cool my case and I stumbled across Peltier devices in eBay. They are CHEAP, costing about $5 or more, depending on the Wattage, etc. The eBay sellers intimated that all you have to do is plug them in and the device gets ice cold. Later, with diligent web-study I learned that actually ONE SIDE of the peltier gets cold, while the other side gets hot. Also, you MUST attach a heat sink and fan to both (?) sides of the peltier. Also, that these devices are not ready to be plugged in; you must attach a DC power supply to them. Oh, another trick that these miraculous devices do is reverse their hot & cold sides when you reverse the polarity of their juice. Ideally, I would like a Peltier device with heatsinks, fans, a thermostat and a DC wall transformer attached... the Peltier/heatsinks/fans would measure about 2" x 2" x 6" and would be mounted in the sidewall of the Orchidium. When the temperature is 65-85F degrees the orchids are happy and the device is Off. But when the thermostat senses the internal temp going over 85F it turns on the Peltier, cold side inside, and so the inside of the case doesn't go up to 90-95F like mine does now; it cools the case a little. Conversely, for someone with chilly orchids or sneezing newts the thermostat would switch the Peltier to hot-side-in to heat the Orchidium a bit. The retail cost for us to buy a Peltier device, 2 heatsinks w/fans and a DC transformer is cheap... roughly $30. The thermostat might be cheap, but I don't know enough about what's needed. If it's too expensive then the Orchidium can do without it. I was hoping I could find an off-the-shelf Orchidium cooler/heater. No such luck. These miraculous Peltier devices are still practically undiscovered -- relatively speaking. People want to use them to cool their computer chips but are hampered by condensation; my orchids welcome condensation. Pathetically, it seems the most common use for Peltiers now is to cool/heat the little boxes on your car seat... they plug into your cigarette lighter and keep your 6-pack cold. Come on! You folks at Instructables can surely help me figure out how to best make an Orchidium cooler with this barely-discovered and poorly-utilized device. I started out a few weeks ago writing to many of the Peltier manufacturers around the world in hopes they might help me in choosing which of their modules I might purchase for my Orchidium. None of them was any help. They wanted to know how many million Orchidiums I planned per year. They told me my basic plan was hopeless or inefficient cost-wise. A Swedish company wanted $800. An American company wanted $500. Some other company wanted $5,000 to $8,000. I wrote back and said I could get a Peltier on eBay for five bucks. The Swedes snottily claimed that their Peltiers were very high quality. No. No way is any svensker Peltier $795 better than ANY other Peltier in the known universe. They both get cold and grow ice crystals on one side. I just need to cool the case A LITTLE BIT, like from 90 to 80 degrees Fahrenheit. I am not trying to make a refrigerator or freezer. The case (Orchidium) is large, at about 7.5 cubic feet, and there is practically no insulation. Acrylic provides a little insulation, that's all. The temp of the interior of the case is derived from the ambient room temperature of your house... and the lights... which is why I designed it with LEDs. There is a constantly-operating muffin fan inside the case to provide air movement for the plants, but it does not provide any evaporative cooling since it's a closed case. So, first off what size Peltier do you recommend... do you think a 40 Watt would be enough, or what? Next, the placement. I envision the Peltier device mounted vertically through a hole in the side of the case. It might be a plan to mount it in the ceiling, but remember that the LEDs take up most of the ceiling. Next, the heatsinks. I confess I'm not totally clear on this, but I "think" that 2 heatsinks-with-fans may be needed, with one sticking out the outside and the other inside the case. I went ahead and got 2 heatsink/fans from Newegg for supercheap ($1 after rebate), but they aren't really what I want. They're actually shaped to fit some AMD chip. What I think I need is a copper heatsink with a flat bottom a little bigger than the Peltier, and fins... and a heatsink fan attached... and some way to attach it to the Peltier, and through the case to the other heatsink. See? Simple... well it should be but I can find nothing. Next, the power supply. I know it has to be DC, but I don't know which brick to get. I did find a bunch of DC or AC Wall Transformers for sale at alltronics... around $10 or so. All that stuff would be enough... at least to test the cooling power. But if we want to go whole hog then the icing on the cake would be thermostatic control of the Peltier. Well, I throw that out in case one of you is sharp in that field.

Needs help putting assembling a thermoelectric module for a possible inventing.  Suggestions on the supplies and parts needed

My project I would like to complete is a thermoelectric piece of turbo piping to cool on my friends drift car it needs to be able to run on a 12v battery .I am looking at buying a few of these http://www.allelectronics.com/make-a-store/item/pjt-7/40mm-x-44mm-thermoelectric-cooler/1.html building a square piece of turbo piping to put it in. I am still not quite sure exactly how it works. I am a Ford Technician, Ford uses them in the heated and cooled seats so they kinda explained how they work but they left quite a bit out. So a lil info or suggestions would be appreciated thanks. If I build it I'll be sure and put the build up on here.

I saw this on youtube: http://www.youtube.com/watch?v=gNND2pxvxgU He has like 16 wires in this setup, and it generates enough power to light an LED... how much power could you get with some more wires? Say 1600? Does the thickness of the wire matter? Sorry to make you watch the youtube video, if you don't want to, here's what's going on. This guy, Nyle, uses copper wire lengths which he has heated at one end and cooled to coat each end of each length with copper oxide. He then bends the wire so that two ends of copper oxide-coated wire are touching and another end is about 3 inches from the junction. By heating the loose end, and touching one wire to another, he's able to generate enough current to light an LED... pretty neat!

Input  temp 200 deg celcius for glowing LED`s how many such materials should i use?

The thermoeletric coolers are eficient or not?. hello everybody!!!!! im recently have make much research and test with tec coolers. on question have a way for boost the tec coolers eficiency. please come and post your questions and answers.

Thermoeletric generator like a furnace outside of which a generator is installed but i could not find the right element which sense even the small amount of heat.  suggest something about that.

Does anyone have a pond fogger/mister and knows what frequency (Hz-Hertz) ultrasonic thing vibrates at.

Does anyone know how to make a solid state relay with a NO contact and a NC?Does anyone have a schematic?Thanks.

I'm thinking of using a thermoelectric peltier device to heat my body while sleeping during winter camping (I have a 12v solar panel and where I'm going it's always light out). Will the warmside of the peltier heat enough so that if its in contact wih my body it will warm me? if its too hot i'll just wrap it in a sock or soimething.?

Does anyone know if Laser tag guns use infared LED's emitting at a certain frequency, If so what frequency/range of frequency

According to this website Instructables is worth over one million USD!How much do you think Instructables is worth?

Hi, Does anyone know how softserve icecream machines work? I have a rough idea that they use an aerator but thats all.

I need a way to heat up the air around the fan, so it will blow hot air twords me. i was going to try a thermoelectric cooler. but i cant find one, so is there any other way? And it has to be school safe, no fire involved

When I reply to comments from the email notifications, I occasionally get a message saying: "nobody has said anything yet" It gets very annoying..... Does anyone else get this?

I'm feeling that Windows Backup is very inadequate. Do you know of any good, reliable, free backup software that I can use? Preferrably for Windows XP. Thanks in advance Thermo.

Hi, It gets extremely annoying when there is multiple drives in my computer but they aren't in use. Does anyone know how to only show present devices or do I just have to live with the multiple devices?

I was just wondering how much messier is your room/house/workshop compared to mine, If so how much messier, Post a pic to show us if possible

Hey guys I'm trying to install Ubuntu on a old computer to use as a temperature (the one that chr made) but since it has only got 160mb of RAM it freezes on the first screen for installation Anyother ways to install Ubuntu without it freezing?

Has anyone ever seen the little sticker on a laptop hard disk drive that says Do Not Push?Guess why?The platter is made of glass?!?!?! (I figured this out by being my normal "Do the opposite of what the sticker says" self)Wanna see?

I have dismantled a CRT monitor and I was wondering what I could do with the LM1279N (110 MHz RGB Video Amplifier System with OSD).Here's a link to the datasheet for it.BTW, What could I use the OSD settings for?

I'm wondering if a TV tuner card in a computer can view two stations at once because I don't really want to have a server with a TV card that is inadequate for the network...

How do i open two word files using notepad-batch files.if i write it without something between the two words but it doesn't work. what do i write between the words

A long time ago I messed with something on my computer, and after that it can't display resolutions about 1024x768. It used to be able to display a higher resolution. (It is a inbuilt GPU, not a seperate card) I tried searching for a new driver, but after I install it, and reboot (BTW: I am using Windows XP), it just ''cycles'', it will boot up to the Windows XP loading screen, then it just reboots, and goes back to where you can select safe mode etc. Then it just tries to do it again. When i choose boot with last known good configuration, it will boot properly, but that doesn't solve my original problem. Any ideas on how I can update the driver without that happening? Thanks, Thermoelectric!

Does anyone know what chemicals can eat through resin? My dad gave me a strobe light which the timing was out on but the electronics were incased in resin so I can't access them. Any help would be useful

I'm thinking about wiring up our house for LAN with CAT 6 ethernet cable, Is there any advantages of putting two ports in each room or should I just stick with one port?

I've been recently reading up on Bio diesel and I've found that butanol is great for cars that run on gasoline/unleaded petrol.Does anyone know where there is any reliable information on how to make bio-butanol, Maybe out of algae?Wiki Biobutanol reference

My dad has got a yamaha xs650 but the fuel tanks got rust in it. What solvents can I put in to remove the rust without removing the tank or messing up the fuel? The pics are of 1)in the tank 2)The motorbike 3)a blurry pic of inside the tank

I have dismantled a CRT monitor and I was wondering what I should with a UC3842B (HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER) that was on the mains power side of the PCB.Here's a link to the datasheet for it.Any suggestions on what I should use it for and how to wire it up?

Hi all Is it possible to stop anyone entering a specific number (phone number) on my network? I have a TP Link TL -WR642G if that helps. I am asking that because there have been some people in our network entering phone numbers into ads all over the net...

Stop the kangaroo killing!Please help, Forward it to everyone in your contact book and spread the word!!Keep kangaroos out of the endangered list!!!This video will keep you off roo bugers for your entire life! If it doesent, I don't know what will. Please sign the petitionRead the petition here and the sign button is down the bottom

Hi, After looking at this USB hub microcontroller page I saw a part where it said this "The TUSB2077A hub is a 3.3-V CMOS device that provides up to seven downstream ports in compliance with the USB version 1.1 specification"Does that mean it's only USB 1.1 compatible?