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Ok, so let's plug in the numbers I worked on yesterday

At a gross level, the calcs I did yesterday suggested that at the peak of JC's 5kHz sine wave, the Peltier effect produced 1.5 x 10E-7 Watts. I think this is high, but it works as a worst-case to see if this stuff could be a contributing factor.

Yesterday, I said this rate of heat generation in a 1mm2 conductor would cause a temp gradient of 3.75K/m in Cu if it was continuous. I think it's really half that, since the heat transfer from the junction is at least bi-driectional, so lets use 2 K/m.

(remember BTW, it only took 50uS to get to that peak, so we didn't generate much heat)

If you stopped the current at that peak, what electric potential would be generated by the Seebeck effect?

The big question is the width you use for the junction, since that will give you the actual temp rise. If it's 1mm, for example, then we have a rise of 0.002 K.

So, given a temp differential across the junction of 0.002 degrees, what is the Seebeck effect magnitude.

I want to try to get to a ballpark number, so we can see if its' anywhere near that 10E-8V level..

Peter

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