The Peltier effect is a reversible physical process which is exploited in Peltier cooler/heater. The flow of current through this device pumps heat from one plate of the device to the other. This can be used to both heat and cool electronic components.

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Flexing Peltier Plate (Physical Question)

I am doing research into Peltier plates for a project, which requires a flexible component. From what I have found, no commercially made flexing Peltier plates seem to exist. My question is, what is ...
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99 views

Peltier circuit design for TEC

I'm designing a TEC circuit with a Peltier element, LM35 as the sensor and Arduino uno as the controller. I simulated it with Proteus and to my knowledge it was working, I suppose. But when I tried to ...
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A device like a Peltier cooler which transfers heat to another surface not in direct contact with the cold side?

Back when I was a kid and first learned about Peltier coolers, I mistakenly thought they had the ability to transfer heat remotely from one surface to another via wires. I didn't realize the heat ...
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60 views

Peltier Power Generator [closed]

I'm looking for Peltier POWER GENERATOR with the following spec. (estimate) Output voltage: from 7 to 12 V Output Pow: more than 10 Watt I want to use this Peltier module to make a phone re-charger ...
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579 views

car A/C using peltier devices, is it feasable'

In a couple of forums where we are working on kit cars with VW air cooled engines and therefore little room for conventional air con compressors etc we are looking at electronic means of getting ...
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97 views

Regulator circuit design

I need to design a regulator for my thesis, but I really need help, Please! The topic: - A temperature regulator for a small fridge Some details: - the regulator has to control a peltier element ...
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96 views

6w 12v 5a peltier only drawing 1a, I am supplying more current but its only drawing 1 amp?

I just bought the peltier and its of 60 watt 12v 5a and its maximum capacity is of 90 watt power. I am using my Pc power supply which have ability to provide 12v and 15a maximum. I connect to that ...
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81 views

USB charger with power bank charged from solar panel and peltiers

I would like to charge some batteries (maybe 1 lipo?) from either a 12V solar panel (about 300mA) or 2 peltiers (also about 200-300mA) in series (about 4V, but it’s really unstable and voltage changes ...
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91 views

Can I safely place a 60w between a 50w LED and a large heat sink that can dissipate 100 watts?

Today I have learned that Peltier devices can be used to generate electricity. I have a set up with a 50 watt LED which is glued to a very large heat sink that cools it without any fans (that can ...
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57 views

Cooling an Insulated Chamber using Thermoelectric Cooler

I have a stainless steel cylinder containing some liquid that has to be cooled downw to 5 C. To achieve this, I'm thinking of making an small insulated box (6" x 6" x 10") with a thermoelectric cooler ...
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139 views

PWM driven bipolar DC motor controller filtered with LC for a peltier element

I want to control peltier element's temperature with a PWM driven bipolar DC motor controller to be able to switch between heating and cooling and also control the level of it. The peltier element is ...
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74 views

Using a Thermoelectric Cooler

I have recently stumbled across thermoelectric coolers, it is my understanding that when they are powered one side will get colder and the other side will get hotter. Also that the more power supplied ...
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74 views

Convert body heat to light [closed]

What thermoelectric device would I use to power one white LED generated by the body heat of one square centimeter skin on a hand. That is, I wish to power one white LED from the heat generated by one ...
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351 views

How to power a 12V6A peltier device with a 14.4V battery?

How to power a 12V6A peltier device with a 14.4V battery. My son is working on a school science project and unfortunately I have very little knowledge on electrical engineering. Please be patient ...
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71 views

Quick and dirty power supply for 127~240VAC to 25A@12V or 5A@60V, or other approach

I am thinking of a Emergency Beer Can Chiller made of up to five 5A@12VDC Thermoelectric peltier cooler plates like this one, one on top of another. I need either 25A at 12V (5 plates in parallel) 5A ...
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1answer
98 views

Minimum voltage input for thermoelectric unit

Context: I am trying to make a drink cooler with a thermoelectric unit (peltier unit). I want to supply the minimum amount of energy as possible to the peltier unit. Now on my peltier unit, it says ...
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103 views

Trying to understand Peltier module specification

I baught this module The specifcation says: ...
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291 views

H-bridge/buck converter with negative and positive voltage range

as already questioned here, i am still working on peltier controllers. For that I am using a stepper motor driver (h-bridge) with a low-pass LC filter and the peltier element behind, as Olin Lathrop ...
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63 views

How is the heat lost in a peltier distributed?

I'm looking at peltier elements to heat my project. I seem to find that most are about 5% efficient, but how is the 95% turned into heat distributed? Does the cold side get 47.5% and the warm side ...
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907 views

Are peltier elements polarized?

I'm looking to add a peltier element to one of my projects. However, I want to sometimes heat and sometimes cool, depending on the ambient temperatures on both sides of the element. Image ...
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2k views

PWM control of Peltier with Arduino+Thermistor [duplicate]

I currently have this setup and would like to add automatic control over the PWM based on a thermistor reading. Any insights?
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2answers
358 views

Peltier with Mosfet - Heat Issues and Alternatives

I'm interested in using a Peltier device in conjunction with arduino as a precise temperature controller. I've followed the example below and have switched out batteries with a 12v power supply. After ...
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1answer
193 views

Reverse current with Peltier (TEC)

Trying to control a Peltier to cool and to heat. Does the following code allow me to reverse the current to switch cooling/heating depending on whether I input "a" or "z"? Source: ...
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173 views

Diode rectification on a device

I have a Peltier (TEC) module, with diodes in series with each lead. (see image below) I'm not quite sure what the specs are for the diode, but it says 130 on one line and SB560 on another, so I ...
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534 views

Could I create Peltier cooling module from iron and copper?

I want to create a tiny, easy to maintain one-purpose distilation unit. It's supposed to distilate expensive tetrachlorethylene to clean it from whatever is dissolved in it. There are millions of ...
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Calculating the output power of Thermoelectric generator

This question is related with my previous question here I am trying to calculate the output power from a specific TEG, here is it specifications, Open Circuit voltage (Voc) = 5.29V Current (I) = ...
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134 views

Drive power supply straight to Peltier (TEC)

Can I clip the output wires of a 12V power supply to the wires on a Peltier (TEC) module? http://www.customthermoelectric.com/tecs/pdf/00711-5L31-03CA_spec_sht.pdf
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Thermistor control of peltier voltage with Arduino (for DSLR chill box project)

I am mildly familiar with electronics, mostly from playing around with electronics kits as a kid. That was a long time ago, though, maybe as much as 20 years ago. I am currently working on a cold or ...
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2k views

Peltier heat resistor temperature controller, schematic issue

I've been having a problem with the following schematic: What I need to do: Two temperature controllers in order to create a temperature gradient. The hot side is a a little above room temperature ...
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188 views

Temperature differentials and efficiency at thermoelectric generator (TEG)

I'm trying to use TEGs to power some low power electronics. So, if there is a positive temperature differential between the hot side and the cold side, I should be able to get a positive voltage. What ...
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2answers
1k views

Considerations for solar powered thermoelectric cooler with fan

I am building a food cooler for camping this summer. My plan is to build a thermoelectric cooler that is solar powered. My cooler is looking much like this: including a CPU fan on the hot side ...
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1answer
125 views

Thermoelectric cooled Avalanche Photodiode sensor PCB

I'm designing a small PCB (max 5x5 cm) to bias and readout from an Avalanche Photodiode. Since the APD response varies greatly with the temperature, I want to use a cheap 12706 TEC together with a ...
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Why peltier elements have smaller heatsink on cold side?

I have seen in nearly all configurations that Peltier elements are mounted with huge heat sinks on hot side as compared to tiny ones on small side. Is this just a way of explaining the need of heat ...
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68 views

Should same sized peltier elements be cascaded?

I learned that peltier elements give better cooling on cascading but need to be growing in size towards the hot side. I have 4 peltier elements of 40×40×35mm and I am planning to make a portable ...
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252 views

Heat Sink for portable refrigerator

I am thinking of making a portable refrigerator with the above schematics, but I am doubtful that the aluminium frame would be enough of a Heat Sink on it's own. All the peltier elements are of ...
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1answer
156 views

Arduino connecting multiple GPIO pins to one voltage line

So basically, I want to connect a small Peltier cell to an Arduino. I know that Peltiers are very inefficient and require large amounts of power in general but I only need to create a small ...
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87 views

Driving TEC below rated voltage

Can a TEC driving IC such as the MAX1979 rated for TEC voltages up to 6V be used to control a 12V TEC - can TEC work under their rated voltage, with the amount of heat moved controlled by current, or ...
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129 views

Fast thermal ramp up/ power efficiency [closed]

I want to build a controlled temperature well in an alumminum block, and right now I am in doub as to what heating method choose. I am mostly torn between a high power resistor such as this or ...
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1answer
781 views

Selecting best Heat Sink for TEG (Thermoelectric generator)

I am trying to solve a puzzle about selecting the right heat sink for my TEG, but I am really confused and lost with lots of equations. Here is the Specification of my TEG (TG12-2.5-01L) Module ...
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145 views

Relay max current

I'm building a magnetic stirrer. I wanted to add a heated bed and I've been looking at peltiers as a heat source. To control the temperature I've identified the "WH7016K", a Chinese-made temperature ...
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1answer
449 views

What happens when you connect hot and cold sides of Peltier device together?

I would like to know how the Peltier device would act if you heat sink the hot side WITH the cold side. Would it just sit there and consume power? I need something to consume ~15 watts or more at ...
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292 views

Feasability of thermoelectric hot/cold blanket or mattress pad?

I want to prototype a thermoelectric based mattress pad like this: where the center of the body is cooled, while the head and feet are warmed. the diagram is a side view and not to scale. The ...
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114 views

Is it okay to rapidly switch on and off a DC adapter

I have a thermoelectric coller I've converted to a heater which I usually use a normal thermostat to control. I've just upgraded to a PID-based controller which of course is going to be switching ...
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162 views

How to determine the maximum voltage and current ratings of a peltier element?

I recently bought a peltier with no ratings. None at all. On hindsight, it was probably not the smartest thing to do, but is there any way I can determine the maximum voltge and current values at ...
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3answers
1k views

Peltier Unit Not Working

Recently I ordered a Peltier unit online and received it yesterday. Naturally, I was very excited to play with it. When I first turned it on, One side got hot, an another very cold. I had read that I ...
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2answers
964 views

Micro rectangular heating element for thin layer heating

The purpose The main goal is creating a little hand-held device that would heat a thin film (locally) to \$50-70°C\$ by sliding over it. The film area is \$<150cm^2\$. A secondary goal would be ...
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Can Peltier devices be cascaded?

Can Peltier devices be cascaded to create a bigger temperature difference? Like mounting one on top of anther one to increase the maximum difference from 60 degrees C to 120 degrees.
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1answer
281 views

PWM LED dimmer as TE driver

Would it be possible to use a standard 12V DC LED dimmer together with a thermoelectric element to control the temperature? I'm talking about a very simple application with no need of fine tuning. ...
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1answer
668 views

how to drive peltier cooler pad at home?

I purchased an peltier cooler plate (90W maximum, but it could work at different power) like the model shown in this link http://pcbheaven.com/wikipages/The_Peltier_Thermo-Element/ . It has a wide ...
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238 views

Are there cryogenic peltiers [closed]

I was wondering if there is such a thing as a cryogenic peltier cooler, are there any that are available on the consumer market not just in high-tech labs. The reason that I ask is because liquid ...