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Originally Posted by unregistered
hmm
I may have missed something ?
how are you addressing the convection from the sides of the riser ?
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Refering to the Fluxblock under the block Bill? Some neoprene goes there, it was removed at the time the picture was taken. I can't seat the fluxblock properly when it's insulated.
The test setup is unfinished (actually barely even started), I must stress that, but it is in the same state as when I measured the Crater, and it seems repeatable to within about 0.005C/W.
W from fluxblock, lpm from bucket and stopwatch, T average from many samples of thermistors and heater has a R spec of 200ppm/C (fluxblock takes care of that I hope, I see a clear variation in W output with Temp, haven't verified with V and I measurements yet, don't trust DMM thanks to you Bill
). So distrust my numbers at this point. The die sim is bodgy.
(Hysteria is waning...)