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Old 10-03-2009, 12:14 PM   #2339 (permalink)
MPaulHolmes
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Location: Maricopa, AZ (sort of. Actually outside of town)
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Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
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Jack, that is one crazy mad scientist lab you have going there! That was a very productive 3-4pm. Do you have a freewheel diode anywhere, or are you not worrying about it since the igbt can handle really really high voltages?

Hey Bob! There's plenty of room where the current sensor usually is. I would have to change the control board to include some sort of op-amp and isolation for the current A/D input, and also change the hardware overcurrent circuit, but that's all doable. The hardware overcurrent circuit triggers in about 2-3 microseconds right now. Are there any opto-isolators with super short propogation delay? Alternatively, how would we get current A/D input isolation from pack ground
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