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I have thought of it Glen, but it's a little beyond my needs. Interested to see how you go about achieving it.
EDIT: I found an interesting write up on powering TECs and it seems that 1kHz is preferred to avoid flow reversal reducing cooling effectiveness. However, I don't think it makes a lot of difference where the PWM duty cycle is maintained near 100%. The switch off times are very low and a reduction in effectiveness works in favour of temperature control bleeding off as the TEC attempts to drive temperature below set point - which is pretty much the set up I use. Really just widening the OFF time to back away from overshooting set point. However, in hindsight, the effect was evident while profiling the cooling curve using long pauses between pulses.
Last edited by rcheshire; 20-11-2015 at 04:16 PM.
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