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.

Filter by
Sorted by
Tagged with
1
vote
1answer
89 views

Testing a diode's electrical characteristics with temperature control

I would like to test a few diodes electrical characteristics at their device low limit, ambient, and device high limit temperatures. I was thinking of using a Peltier element with a heat sink, but I'...
2
votes
0answers
198 views

Peltier broke? Or do they just do this?

I power the peltier on 12v with a heatsink on the hot side The hot side gets lightly warm and they cold side gets nice and cold except one part, The very top right corner on the cold side is hot, the ...
0
votes
2answers
542 views

Beginner Question on Whether Running A Fan and Peltier off a Battery Pack Would Work

If I have a 2.4A 5V Max Output Battery Pack, and I buy a 12V, 60 Watt Peltier Element and a 5V .4A computer fan (leaving room for comfort, item is actually 5v .36A), could I run both off of that one ...
0
votes
1answer
187 views

Trouble with Peltiers TEC and USB Output Current

here is the website I will be referencing: http://www.instructables.com/id/5-Mini-USB-Fridge!/ So I was reading from Inscrutables on powering a small Peltier TEC to cool your hand while reading, and ...
0
votes
2answers
244 views

Thermoelectric Energy Harvesting

I'm building a project based on ltc3108, Linear Technologies IC, and the Peltier cells, TEC 12706. The basic idea is to recharge a battery by the temperature difference between the body-skin and the ...
0
votes
2answers
672 views

Measuring power output of Thermoelectric Generator with multimeter

I am using TEC1-12706 to generate electricity from hand heat. When I measure the voltage with multimeter , the reading is about 72mV and without connecting any load I also measured the current(about ...
4
votes
2answers
2k views

What are the efficiency limits of the Peltier effect?

I understand that thermoelectric coolers are perhaps a quarter as efficient as heat pumps. Why? What is the source of this efficiency limit? What would have to change for thermoelectric coolers to be ...
0
votes
1answer
384 views

How to reverse polarity on only one device?

I have a temperature controller with two SPST relay contacts, one each for heating and cooling, and I want to use them to control a Peltier thermoelectric cooler (TEC), plus a fan and pump and ...
0
votes
2answers
759 views

Peltier power supply voltage dropping

I've made a cooler box for a DSLR to keep it cool while doing long exposure astophotography. It uses 2x 12706 12V 5.8A peltiers which are water cooled. Peltier spec on amazon says VMAX 15V IMAX 6A ...
0
votes
1answer
233 views

Construction of Peltier tiles

I'm learning about the construction of Peltier tiles from Wikpedia. However, some of the statements in the article are not at all clear. Here's the extract: Two unique semiconductors, one n-type ...
1
vote
0answers
797 views

Peltier Driving Circuit

I am driving a peltier (thermoelectric heater/cooler) using a DAC (MCP4725), Arduino mega, quad-opamps to shift/invert the DAC voltage (LT1885) and 4xOPA549 (2 per peltier). I use PI control and ...
0
votes
1answer
70 views

Connecting the instrument to two different power supplies

I am very new to electrical engineering and this is my first project on it, so any help would be really great:) I am currently trying to power an instrument, which consists of: 1) Two LEDs 2) Two ...
0
votes
1answer
850 views

What happens if a 12V Thermo-Electric cooler / Peltier Module is supplied with 17-18v?

I'd like to connect a thermo-electric cooler to a power source that's actually being run from a solar panel to a 12V battery, and I'd like to tap the cooler module onto the leads for the solar panel ...
0
votes
0answers
362 views

Beginner, how to connect a rechargeable battery to be able to power a 12 Volt Fan and a 5 Volt TEC/Peltier (or 5 Volt Fan/Peltier)?

Firstly, I want to say thank you for looking at my question. I am trying to make something for my nephew, but I really don't have much experience in electronics, even though I have been researching it ...
0
votes
1answer
37 views

Thermoelectric cooler working type

I have some questions regarding TEC. What if, I operate TEC without any cooling fan both side. In this condition for how much time it can run. What if, I operate TEC with one cooling fan at cold ...
0
votes
1answer
1k views

peltiers in series

Im trying to understand the way a peltier modules behave as they are new and intriuing to me, I have ordered a few tec1-12705 units from china and done a little research trying to understand it. Some ...
-5
votes
2answers
114 views

power limiting peltiers [closed]

I am trying to power a set of peltiers and am having some concerns, while I have a computer power supply I can dedicate to the product these are often high in the amps they can deliver, and the ...
0
votes
1answer
258 views

Peltier fridge and heat sink

Iam trying to make a mini refrigerator with peltier device. I do have two heat sinks and the hot side of the device is connected to a fan. The colder side is connted to another heat sink with thermal ...
-4
votes
2answers
2k views

reducing temperature of drinking water from 10c to 5c in 90sec using Peltier module. I have no background in physics so please talk simply [closed]

Right straight up I have no background in physics. I need to cool drinking water 1000ml in 90 seconds. I would like to cool the water to approximately 5c +/- 1c. The temperature of the water before ...
2
votes
0answers
2k views

Peltier driver with IR2110

I'm trying to drive a Peltier cell. The driver must allow both operation modes (cold/hot). To achieve this i'm using filtered 3.3V 100KHz PWM from a microcontroller to drive an H-Bridge (as far as i'...
0
votes
3answers
49 views

What happens when a Thermoelectrical generator exceeds its maximum temperature ratings?

I have a commercial Thermoelectrical Generator used to generate 12V of power from the heat of stove. The data sheet says the maximum Temperature rating is 452 C°. What happens when this temperature ...
0
votes
1answer
172 views

Smooth 12V pwm signal running at 4 KHz

I'm making a fermentation chamber using a Peltier element (TEC1-12706). As recommended by the data-sheet (\$V_{max} = 14.4 V, I_{max} = 6.4 A\$), I'm using a 12V/3A 4 kHz PWM power supply. I want to ...
0
votes
1answer
97 views

How do proportion current for components?

I am making a mini-fridge. On one side is a 150mmx150mm aluminium plate. It has been roughed up to increase surface area. On the other side it has an aluminium CPU cooler which can survive the tdp of ...
1
vote
3answers
424 views

Making Hot and Cold room at the same time with Peltier stack

I am thinking about 2 small boxes with peltier stack middle of them to get a cold room and hot room at the same time. Is it possible to get -40 degree celsius cold room and 100+ degree celsius hot ...
-1
votes
1answer
213 views

Charging supercapacitor using peltier module

Using peltier module and with additional circuitery i was able to achieve a dc voltage of 5V and current 5mA. I need to charge a supercap but the current is too low for that. Any idea about how can i ...
-7
votes
1answer
611 views

Home made Heat Sink [closed]

We needed a heat sink for a TEC1-12706 Peltier module. We made one by breaking a transformer and attaching each plate onto an aluminum plate. Do you think this will work?
-1
votes
1answer
393 views

Peltier heat-pump, insulation between hot and cold chambers [closed]

I have made a decent heat pump, with 4 x peltier elements each at 48W. Each element will be switched with a separate relay. I will later install DS18B20 sensors in the heatsinks, embedded in thermal ...
2
votes
3answers
129 views

Cooling circuits in a hot loft with dusty air and bugs

I have a home-made home-automation system that includes a CCTV unit, circuit boards for controlling PIRs and outside lights, a UPS and power supplies. In the summer the loft gets hot (>40C) and the ...
0
votes
3answers
1k views

Amplify current from a 4-20 mA temperature controller to drive a Peltier module

I have a temperature controller (Chino DB1000) which has a PID output of 4-20 mA. With this, I want to control the current going to a Peltier thermoelectric module (15V, 6A). I am doing this via an ...
1
vote
2answers
456 views

Peltier Module/TEG specs explainantion

I am looking for a Peltier module/TEG to power wearables and I'm not quite sure what specs I need or should be looking at. To be honest I am not quite sure what some of the specs even me. Essentially ...
3
votes
4answers
2k views

Two weaker peltiers vs one stronger peltier for cooling?

I'm planning on making a small water cooler for a project. I need to cool approximately 1.5L of water and have two TEC1-12706 (12v 6amp) peltier modules, and hoping to cool to as low as 6 degrees ...
1
vote
1answer
552 views

Powering thermoelectric cooler and fans with 12V input

I was considering a project with a thermoelectric cooling module rated 60w and so obtained an AC power supply of output DC 12V and 4.16A. I'm very new to electronics so excuse me for the basic ...
1
vote
4answers
1k views

Regulating power on a Peltier module

I have a Peltier module rated 12V 12A. I want to regulate voltage on it continuously from -12V to 12V, i.e. make an adjusted heater or cooler from the module. There are some industrial solutions, but ...
1
vote
2answers
216 views

Assistance with circuit design [closed]

Ok, so for the past few days, i've been getting more and more interested in Peltier Modules, and i've finally decided to make a portable mini fridge with one. After MANY long hours of research, part ...
0
votes
1answer
254 views

What will happen if I drive 2 TEC-12715s and 2 CPU fans off a 12v/30a power supply?

I'm planning an addition to my liquid cooling system for my computer. I would like to use two TEC-12715 peltiers, which pull up to 15a @ 16v, and two CPU fans, probably pulling around 5W total power. ...
1
vote
3answers
11k views

What power supply do I need to power 4 peltier plates with 5A 12V each?

I need to power 4 peltier plates (tec1-12706) with 12V and 5A for a thermoelectric cooler project. I wish to have maximum cooling. Also I need to attach a few(4) computer cooling fans to dissipate ...
0
votes
3answers
105 views

unknown component in mini cooler

I am modifying a mini cooler/heater and there is one component whose role I don't understand. The Peltier cell is attached to a heat sink on one side and is in contact with a metallic block on the ...
1
vote
3answers
484 views

peltier cooler heatsink

I am modifying a small cooler (mini fridge) that uses a Peltier cell. The cold side of the Peltier cell is in contact with the inside surface of the mini fridge. My question is: will gluing (with ...
0
votes
1answer
263 views

How much difference do peltier units have

I recently bought a 6 can fridge cooled with a tec1-12705 unit, meaning the current rating is 5 amps. It gets about 7 degrees C inside the fridge and I want to upgrade it. I've been searching for a ...
0
votes
3answers
5k views

At what current and voltage should I run my TEC/Peltier modules for max cooling effect?

I have 8 x TEC modules each with specs 12V, 6A, and I have a power supply of 12V, 10A. If I connect all them in series, I know current stays the same and voltage increases. But what I'm unable to ...
2
votes
2answers
687 views

Peltier Module TEC1-12706 draws only 2.7A. Is it normal or my unit is defective?

I had recently ordered a TEC1-12706 Peltier module from amazon. I tested the module as soon as I recieved with a 1.2V Ni-Cd to make sure its working and also to make sure of the hot and cold sides. I ...
-2
votes
1answer
904 views

How do I connect multiple Peltier modules to one power source? [closed]

I am making a project which includes 8 X Peltier (TEC) modules of specs- 15.4V and 5A 3 X Cooling Fans 1 X Thermostat to control tempearature 1 X Temperature Display unit with Thermocouples Some ...
1
vote
0answers
361 views

Fridge/cooler circuit unnecessary diodes

I am modifying a mini cooler/heater to turn it into an incubator in which I can program the temperature sequence in time. I have reconstructed the electric diagram of the cooler/heater and I don't ...
-1
votes
1answer
371 views

what will happen if i connect 6 TEC module in series? will it give high COP?

i m working in a project of peltier cooler .i want high cop as possible .so i want to ask of i connect 5-6 TEC module for extra cooling then will it work properly ? or can it give high cop?
0
votes
2answers
441 views

Powering of Peltier Elements and power issues! [duplicate]

I want to power up 4-5 peltier elements TEC 12706 which have maximum voltage of 16.4V and max current of 6.4A (at 50 C). Will a power supply of 12V 30A do the job (I'm thinking about connecting them ...
0
votes
3answers
207 views

Best design choice: linear regulator or switch converter

I need to power a Thermoelectric module with 10A maximum load current. I'm designing a card with a minimal design in order to change the current or the voltage across the load, given a standard ...
0
votes
0answers
139 views

Peltier power limits

I have 12v peltier modules that I wish to run as a heater and ac unit but they have have a limit of like 27ma I have tried plugging then directly into a 2a car cigarette lighter adapter and they ...
0
votes
1answer
1k views

how to increase the current from the LTC3108 chip

I am currently trying to do body temperature thermal harvesting using thermoelectric module. The voltage obtained from the module is around 50-60mV. There are not many chip out there is able to boost ...
-1
votes
1answer
3k views

Peltier hot side cooling

i am trying to make a peltier powered mini fridge and i am having some trouble getting it to get to the temperatures i want. First of all, some info. I am using a Cooler Master T4 as the cooler for ...
1
vote
0answers
163 views

Themal Energy Harvester Trouble

So basically, I just recieved my LTC3108 breakout board and wanted to test it. The way it (supposedly) works is you solder two specific points on the board together to indicate a specific output ...