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40MM X 44MM THERMOELECTRIC COOLER

 
New thermoelectric devices, prepped with a temperature cutoff switch. Originally intended for 12Vdc use in picnic and automotive coolers/ heaters. 127 thermocouples per device. deltaTmax=79degC, Thot=50degC, Vmax=16.1V. 40MM x 44MM x 3.3MM. Qmax=80.6W, Imax=8.1A


Spec sheet available in PDF format.
Average Customer Review:  (20 Reviews) Write A Review

Customer Comments

Average Customer Review:  (20 Reviews) Write A Review

A customer from USA
powering from ac
I would like to power this from US ac power...obviously it needs to be rectified to DC but would using AE's CAT# TX-6310 6.3VCT 10 amp transformer connected to a bridge rectifier work? If you can PWM I assume no smoothing is needed. For temp regulation can they be switched on and off at slow(minute) intervals? I read somewhere this could be hard on them.
Thanks

A customer from Los Angeles
Good Little Device
Give it 3 amps to freeze a drop of water or grow frost. You can feel the effect with usb and a inline resistor or 12 volts dc at about 1 amp

A customer from CA
Power....
How do you power this? I have 2 nice aluminum heat sinks on it, and am powering it with a 9v battery but it does not do anything. My battery gets hot, so I am assuming that it is drawing current.....but when I measure the voltage of the battery when it is connected it reads around .4 volts and immediately returns to around 8.2 volts afterwards. Help??? Editors Note: You can not get enough current out of a 9 volt battery. You need several amps to power this. Have a look at the spec sheet

A customer from NEW WASHINGTN, OH US
'Cool' Little Device!
This works exactly as advertised. I love it, things like this get the inventive juices flowing so to speak. However, if you don't have the supplies to cool the hot side, I would suggest buying the other peltier model, as it already has heatsinks attached! Would buy again!

A customer from LA, USA
Power requirements
The power requirements are clear. Multiply the Imax (max. amps) by the voltage. For example 12 volts X 8 amps = 96 watts.

However, on startup the amps are a little higher than typical ratings. I recommend a power supply of at least 125% of power consumption.

Stacking TECs works, but one should stack progressively larger or smaller TECs since the hot side is multiples more efficient that the cold side.

Example: If using TECs for cooling a CPU, put the cold side of a small TEC onto the CPU chip, put a larger TEC ontop of that, etc.

I highly recommend an aluminum plate of about 1/16" thickness between each TEC, but always as large ase the upper TEC.

Example: 1st TEC is 20mm square, second TEC is 30mm square, aluminum plate between the two is 30mm square, etc.

Now, thermal shut-off of TECs using switches such as bi-metal switches is very hard on the life of TECs.

To regulate either the hot or cold side of a TEC without harming the life of the TEC you should use a pulse width modulator. I recommend the PWM's sold specifically for this purpose that you can buy at TETech.com for about $100.00. The same PWM can be used for either the hot or cold side by simply changing a jumper wire.
CAT# PJT-7
$14.75 each
10 or more    $13.75 each
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