Questions tagged [peltier]

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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Optimizing Peltier water cooler set up

Application 20 gallon aquarium cooler Ambient temp: ~22C Tank target temp: ~17C Tank houses an axolotl and needs to be kept at cooler temperatures then currently in the basement. Current Peltier Set ...
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Can I make a homemade Peltier module with constantan wire?

I'm trying to make my own Peltier module. I ordered constantan wire, which I used as N-type semiconductor and iron wire as P-type. I made this and powered it with 3V, but without response. What am I ...
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How to maximize heat dissipation on Peltier tiles

I am not an electrical engineer by any stretch of the imagination, but I do like to tinker. I am building a liquid cooling ramp (also known as an ice luge) liquid gets poured into the top of the ...
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Gasoline generator + Peltier configuration

I have a DIY cooler box with Peltier element 12V/3A/27 watts and want to connect via power supply to gasoline generator with output 600W at 5A max. Would that be a problem and not supply my Peltier ...
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TEC cold side temperature decreases, then increases rapidly [closed]

first post to this stack exchange. Self teaching on TEC circuits. I bought a diymore TEC1-12706 12V 60W 6A. Note no heat sink installed on the TEC. To test the TEC I put together a series circuit as ...
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Peltier device stopped working

The peltier device worked well when i submerged the hot side in a frozen alcoholic gel, but then when i unplugged it from power and washed the device with water it stopped working. It doesn't get hot ...
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How to reverse voltage 12-24VDC to use a peltier element for heating and cooling

I'd like to use a standard peltier element as a heater and a cooler. The specs should be something around 12VDC, 30W. Electromechanical relays are not an option, the peltier should be used to regulate ...
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Bodyheat powered microcontroller

Old Post and even older Post I came across before posting this question. The answers by McMahon and Alexeev are pretty much what I was thinking: human energy source: ~100 W skin surface: ~1.75 m2 ⇒ ~...
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What wire size to be used for Peltier cooling

I'm making a project with three Peltier in parallel (12V & 6A) each (TEC 12706) for cooling. I would just like to know the wire size to be used in (AWG or mm2), for running project smoothly.
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Peltier stopped working

I am creating a sort of food cooler using a tec1-12706 peltier element since i figured the casing where the food goes in is already made of an heat/cold conductive metal. The cold side was not ...
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Circuit Design for Peltier Cooler and Microcontroller

I Currently have a 100 Watt Solar Panel, Charging a 12v, 6Ah Lead Acid Battery using a generic solar charge controller. I am looking to connect a 12v. 6amp peltier unit, as well as a raspberry pi, to ...
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How do you calculate total current draw in parallel?

If I have a 12V power supply, a 6A TEC, and a 0.15A fan running in parallel, how do I calculate total current draw?
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How do I calculate current when using a power supply?

Edit: I’ve just learned that a 500mA PSU is not going to necessarily output 500mA; it’s not a constant current PSU. It CAN output that much, but only if its components are asking for that much. It ...
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How much electricity can be generated from stove's heat?

Yesterday I asked a whether it is profitable to put a thermoelectric generator (TEG) between a stove and a freezer regarding electricity terms. I was missing a point, which was that heat was being ...
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What if we attach a TEG between a freezer and stove?

I have been thinking about this, that if we attach one part of a thermoelectric generator between a freezer and other part on a stove. This would create a temperature difference and generate ...
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Peltier module not cooling

I have a peltier (12705) and I have created adequate cooling for the hot side and a small heatsink and fan on the cold side. The cold side reaches -12°C. I have a cutout in a small box that the cold ...
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Driving a Peltier Module via N-channel MOSFET H-Bridge

I'm working on a circuit to control a heating/cooling element (Peltier module) using an H-bridge. I'm using FDP8447L for that purpose. My Peltier is rated for 6 amps current and 15.4 Volts. The gate ...
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TEG (seebeck) to drive small brushless motor?

is it possible to drive a small (~ 24x30mm) brushless motor with a small (40x40m, ~0-3V) TEG module? I am trying to educate myself on brushless motor function and control but can't find much info on ...
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Basic Peltier driver causing horrible voltage noise

This is a very trivial question but I am lost. What I am doing: Just for fun, I did a Peltier water heater (the idea was to cool the driving MOSFET with the Peltier cold side, which pumps said heat to ...
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Peltier not cooling properly (draws less current than usual)

I have two peltiers (12710) bought at same time,few months ago. It worked properly months ago. Now, when I apply same voltage across them (with both peltiers having similar heat sink configuration), ...
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LC filter for TEC (Peltier)

I am designing TEC controller which both COOL and Heat. This will be control with PWM from microcontroller. I have two questions: Spec: TEC will be run between 6V-12V max current 2.5A What type of ...
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Cooling 1.5 cu ft with a TEC1-12715 Peltier

I'm trying to modify a standard cooler (about 1.5 cu ft) so it no longer requires ice. I want to get the interior to 35 - 40F assuming the ambient temperature is about 75-80F. However, I don't have ...
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Peltier suddenly stopped working

I set up a device with a Peltier module squished between a small and a large heat sink. The large heat sink is on the hot side, and the small one is on the cold side. I was running the device on 12v, ...
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What are the limits of Peltier cells?

I am doing a project for the university. The project consists of a temperature controller in a glass chamber. The objective is a controllable temperature in a range of 0 - 100 degrees Celsius. The ...
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How can I use PID to precisely control a Thermoelectric Cooler (TEC) while also supplying 24V?

I need to use a TEC to stabilize the temperature of an instrument. My thought is to have a thermistor provide live temperature data to a PID controller which would stabilize the TEC to a set ...
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Using TEG to generate electricity for cooling car interior parked in sun

I am working on how can I cool down or normalise interior temperature of cars parked in sun for too long as they get real hot. So I thought if this could be done by thermoelectric generators. I don't ...
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Peltier not cooling

I am looking for a little help as I am trying to make a small Peltier cooler and having a little trouble. FYI I have very little idea on what I am doing just got an idea off of youtube and gave it a ...
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How can I calculate the power needed to increase/decrease the temperature of an object by x degrees when using a Peltier module?

I am working on a cooling system using 4 Peltier modules. I would like to somehow determine the power I need to reduce the temperature of the object attached to the Peltier module by x degrees Celsius....
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Silicon die on Peltier device with COB wirebonding

I have a camera sensor (bare die) that must go on a very tiny PCB that also contains electronics for data serialization that dissipate enough power to make the PCB pretty hot (40-60 deg. C). I want to ...
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Driving a Peltier element with PWM

I'm trying to drive a Peltier element using the VNH2SP30 motor driver, switching at the Arduino's PWM frequency of ~970 Hz (which is extremely low, but I'm planning on increasing the driving frequency ...
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Peltier Quick Heating and Cooling

I am using Peltier Module to quickly heat and cool down the object placed on it to a particular temperature. My target is to heat the object to 90 degrees and then cool it down to 54 degrees and then ...
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Fixing the temperature of a large metal plate

I need to hold a 60x60cm aluminum panel at a fixed temperature of 35 degrees Celsius. I thought about using Peltier elements but I'm not sure how easy it is to maintain a constant temperature with ...
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How is the current drawn by a Peltier determined for a given voltage and given Th?

I have 12V 20A SMPS for building a cloud chamber. I have a question about configuring the Peltiers. I don't know how much current a Peltier draws for a given V at given Th (hot side °C) In my ...
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Using boost converter and battery to power Peltier device

I designed a boost converter using a 555 timer in order to power a Peltier device. This is mostly just for fun and to understand circuits a bit better. I ordered all the parts so that they are the ...
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Why my power supply drops voltage when peltier is connected?

I had these 12v 2a power supply(adaptor) and rgb box labeling INPUT: 12VDC OUTPUT: 12v 6a(Max Current). I can light up led without problem but when I connect peltier, the supply is dropping down and ...
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Peltier reverse polarity

I am thinking about using peltier for both heating and cooling to maintain desired temperature profile in small area (2ft square at max) Can continuously changing polarity damage peltier module and ...
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I have a 12v 6ah Peltier Mini Fridge will using a 12v 10ah power supply harm the Peltier? [duplicate]

Hi all I have a commercially made mini fridge which displays it power requirements of 12v DC 6ah power supply. I have a 12v DC 10ah smp power supply. Can I use it with the Peltier fridge without ...
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How to test a Peltier module TEC1-12705 to determine if it works as intended?

Background: The module comes from a 70W mini-cooler which doesn't really cool anymore. I took it apart and got the module out, I could read the model TEC1-12705 from the module itself. The ...
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Peltier Power supply problem

I am doing a project using a peltier TEC1-12706, however I am stuck on powering up the device. I am using a computer adapter power supply(20V;90W) and I it coupled with a synchronous buck-boost module ...
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Thermoelectric Generator Schematic

On my other question I asked about how could I regulate a TEG like this: for a 12 V, 10 W load I have. My first idea was to use some resistors, a zener diode and a linear voltage regulator. But ...
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Thermoelectric Generator Impedance Matching

I have a TEG that has an output IxV curve like this: That should mean something like this: I need a simple circuit to regulate the voltage around 12 V while enabling at least ~10 W for some load I ...
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Idiomatic way to control output voltage of buck/boost converters using microcontroller

I'm trying to design an appliance that efficiently regulates power to some Peltier elements. The manufacturer states that optimally, you should drive these with regulated voltage and not PWM. They ...
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EM noise from Peltier cooler

I'm considering cooling a very sensitive photodetector with a Peltier module. I have been told by a colleague Peltiers coolers produce electromagnetic noise, but I am wondering whether this is due to ...
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Peltier cooling calculation - Help ! :)

I have gone through many of online blogs and websites for guidelines about selecting Peltiers but somehow I am still lost in the middle. I am still missing major numbers to be able to select which ...
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How to combine H-bridge with high current pwm smoothing filter

I would like to drive a peltier (rated max 12V, 5A) with three considerations: i want to control the voltage absolute value with a PWM signal from an arduino (30kHz), the voltage across the peltier ...
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Identification of unknown peltier element

I recently found an old, unused peltier element in our lab, with dimensions 40x40x4 mm³. Unfortunately, no type number is visible on it. By connecting it to a power supply I could identify the hot and ...
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How to effectively control a Peltier device with MOSFETs? (general design and heat issue)

First, I'm still quite a novice in the electronics, so may miss some basic knowledge, but trying to learn anyway. That being said, here's my situation: Goal: Control of the direction of the heat ...
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1 answer
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Understanding thermoelectric generator and Ohm's law

I understand the simple terms of U = R * I in the context of a constant voltage - which is approximately the case for most consumer electronics, where the ...
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4 answers
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How to regulate temperature of an IC/PCB -in a vacuum

I have to regulate the temp of an IC. (70deg. C) The part will be in a vacuum chamber. Electrical connections can pass in-out of the vacuum chamber through a port (plenty of connections available.) I ...
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PID controller for a very wide temperature range (∆T=190°C)

I'm designing temperature control system based on Peltier elements. And it's needed to work on a very wide temperature range - from below zero to more than 100°C. So there is two work modes - cooling ...
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