I have a peltier junction rated at 12V and when ran both sides become hot, what's wrong?
I suggest that you post this here:
Might also wanna read the thread called "Newbee question" by me
I became interested in pelteirs myself and I might start using them to cool parts of my computer down.
You need to strap a heat sink to it, otherwise there is nowhere for the heat on the hot side to go except over to the cold side. I bought one a couple of months ago to play with and I got two heat sinks with fans and rubber banded them together with the peltier in the middle.
Ahh, thanks guys. Yeah, I have a heat sink already from my gutted Pentium 2. If I turn down the voltage, can I feel the coolness of one side? How can you tell which side will be hot, and which will be cold?
Without a heat-sink, you'll need to be touching both sides the moment the power is applied to tell the difference. But it should work (with a heatsink) at 5V - I used a computer power supply to run mine for testing.
Unless its marked, you have to turn it on to find out - and trust me, you'll know. It takes less than a second for it to cool 50+ degrees.
Is there a maximum heat output? Can I turn the voltage up past 12V?
Most put a thermal switch in that cuts out at 150 degrees F. yes you can go past 12 volt NOT ALL but most 12 volt pelter junctions have a absolute max voltage input of 15.2 volts
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