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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TEG inquiry for my design project [closed]

i bought a TEG1 127-1.4-1.0 in its specification the voltage is 3.2v but when i try it the voltage is only at the range of 300mV to 1.2v but when i connected 6 Pc in series its voltage is only at the ...
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How to Detect if Motor is not Working?

sorry for my english, I am from Indonesia. I try to make a (car) relay active - switch on, if the motor/fan is working normal, so when the fan is out, not working or broken, automaticly the relay is ...
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37 views

Self charging wood-gas camping stove using thermoelectric module/modules

Is it better to string 3 teg thermoelectric generator modules in series to charge 8 NiMH batteries at a current of around 700 mA Delta T of ~80 deg. C or should I use 1 module and try a voltage ...
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113 views

Why a thermoelectric generator's efficiency increases when the thermal conductivity of thermoelectric materials decreases?

A thermoelectric generator generates electricity from the flow of heat.The heat flow rate will increase if the thermal conductivity will increase. So the power generation should increase too. So why a ...
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303 views

How can I determine the alloy in a Peltier module?

Simple question, I know I have the following Peltier module : 12711-5L31-03CL. I have it's datasheet. I'd be interested in knowing its alloy so I can know it's Seebeck coefficient and thermal ...
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how to calculate Seebeck coefficient with the following values?

Here are the values we have : V the potential of the Peltier module, calculated from the current through Peltier module and it's resistance T the temperature difference a the Seebeck coefficient is ...
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93 views

Wiring 100 Peltier Plates Together

Get ready for a question about an absurd idea I'm trying to determine the feasibility of. I want to both heat and cool a flat 3mm aluminum sheet of dimensions 50x50cm (half meter squared). If cost ...
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3answers
85 views

Sizing of a peltier element

I want to cool some electronics with peltier elements in order to increase their potential working temperature compared to the surroundings. Unfortunately the surface where these elements are ...
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52 views

Efficient cooling system for a DNA Analysis thermal cycler

My team is doing a senior project that involves using polymerase chain reaction to analyze DNA. From what we know, most modern thermal cyclers uses the Peltier thermoelectric modules for active ...
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47 views

Is it possible to have peltier plates within a few micron thickness range?

Is it possible to make peltier plates of a thickness of a few microns . If not What device/material can be used in a thickness range of a few microns for cooling purposes ?
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69 views

Cooling a CCD cam need help with power source

Lately my brothers love for astrophotography left me to embark on this endeavor. He has a metal CCD camera and in the sport a major way to reduce image noise is to cool the camera. So I ordered some ...
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2answers
196 views

TEC 12706 not drawing more than 1.6A when powered by a 12V PC SMPS

I have recently bought TEC 12706 device from Sunrom.com; The specification says that the device can draw more than 6A current at 15.4V and internal resistance is ~2 ohms. But when I measured the ...
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264 views

Smoothing a High Current PWM

I am using a MOSFET to control the average voltage to a device by varying the duty cycle to the base as shown in the diagram below. My question is what is the best circuit to use in the "filter box" ...
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1answer
89 views

Are cheap Chinese peltier modules efficient?

I'm developing a product that cools beverages and trying to decide what peltier modules to choose. I've noticed that some companies like Laird Technologies, CUI inc and TE technology offer expensive ...
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3answers
359 views

Wiring multiple peltier units

First of all this question relates to powering Peltier units and not the physical relationship. I have two Peltier units and a 320w 12v supply similar to this the units are TEC12715. They are ...
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1answer
127 views

How to determine the value of a decoupling capacitor across a Peltier device?

I have a TEC device (Thermoelectric Cooling device/peltier device), and I have seen several datasheets recommend placing a bypass capacitor across the TEC device (i.e. parallel to the TEC, and in ...
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295 views

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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2answers
288 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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307 views

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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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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145 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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1answer
198 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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121 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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137 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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1answer
236 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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1answer
101 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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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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770 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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135 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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239 views

Trying to understand Peltier module specification

I baught this module The specifcation says: ...
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482 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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72 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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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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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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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
299 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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262 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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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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169 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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1answer
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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2answers
2k 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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157 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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80 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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335 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
190 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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133 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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163 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 ...