Nicolas
It is hard to use linear optos to get volt and current sense across I make sure that there is series impedance then 5 volt TVS diodes across micro I/O pins
my comments were directed at some of the other posts where micro derived drive signals are use to drive the half bridge directly
a TMP 50 has about the same energy as a .22 LR cartridge where as a TMP150 is more like a .308 cartridge amount of stored energy
DIY Turbopump Controller
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John Futter
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Nicolas Krause
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Re: DIY Turbopump Controller
Thanks for the clarification John, I've added the suggested circuit protection, now I just have to spec everything and layout the board! That's a nice way of thinking about energy as cartridge size, it's been awhile since I've been on a range but even though .22 LR is small I wouldn't want to be hit by either.