High-dynamic-range heater driver using self-sensing resistive elements

@BreakingTaps @Chrismholt Oh my other snipe attempt: somebody should build a high dynamic range driver for resistive heaters with high temp coefficients of resistance. Temp controlled vapes use the heater coil as their sensor just to avoid adding a real temp sensor But if you made eg a set of radiators for a TVac chamber with high TCR and low mass you could punch their temperature up and down ludicrously fast without burning them out. No lag in the control system between “my heater jumped 200C” and “my temp sensor sees the rise” would let you really flirt with the edge of “5 more ms and this baby is gaseous” I want this for printer nozzles, but it has a lot of fun applications imo