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0answers
22 views

Cooling Peltier Maths

I want to construct a peltier cooling system. However, I have limited mathematical skills. Can I ask how to do the maths to calculate how much temperature differential can a specific peltier cool ...
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1answer
53 views

Water-Based Heat Sink

I am trying to incorporate a TEC in a portable system. The heat from the interior of the system needs to be transfered to the exterior where it can be dissipated freely into the environment. Now, I ...
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0answers
23 views

Temperature control for car chiller [closed]

I have this circuit in my car chiller which works on 220v ac, however the cooler auto cut off is at 15 degree c, where and how can that be lowered to let's say 2 degree c. Any guidance will be highly ...
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votes
1answer
66 views

Is there a SSR like device that can switch at kHz frequencies?

I'm designing an industrial control system that incorporates several peltier devices. As I understand it, these devices are more efficient when driven with a constant voltage, vs being cycled every ...
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10answers
2k views

Heating a tube of aluminium electrically

I need to regulate the temperature of the surface of a tube of aluminium. The tube is used as a mandrel for composite molding/curing, so the target temperature is below 100C. Currently, there is no ...
0
votes
1answer
47 views

I want to be able to simply control the cooling tempreture of a small 40 to 60 millimeter thermoelecrtic cooler

i want to be able to control the cooling temperature of a small 40 to 60millimter TEC. I understand voltage level plays a part but do not know what voltage level equtes to what temperature on either ...
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0answers
786 views

H bridge for peltier heating and cooling

I am testing DRV8840 circuit in my setup as a 12V, 3amp peltier controller. And there are 3 temperature set points : 25, 30, 37 celcius. Hardware configuration done so far as follows: Trial 1 : ...
4
votes
2answers
89 views

How can I measure moisture on a conductive flat surface as an analog/digital value?

So as the title states, the question is: Is there a way to measure moisture on a electrically conductive flat surface? Optionally, it would be great if I could have an indication of the amount of ...
0
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1answer
80 views

Peltier inquiry

With availability for high powered Peltier thermoelectric heating / cooling I'm inclined in a cooling design incorporating them. Being first time incorporating the same I'd like more understanding and ...
3
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1answer
335 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 ...
2
votes
4answers
14k 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 ...