Quote:
Originally Posted by MPaulHolmes
What was the amplitude of the 400 Hz sine wave? (aka, how bad was the overshoot for the current?)
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the amplitude was about 100mV which corresponds to about 1.5A. so, my clamp meter would show 4.7 amps (which was about right) but the scope was showing it as an oscillation +- 1.5A.
of course, btw, this is all being tested on a resistive heater element. it's easier to work with, but I know the battery will be much more sensitive.
I like the idea of the finer resolution variable - was wondering what that was all about, but now it makes sense. Otherwise, it won't work too well if your "changeinPWM" variable always gets rounded to zero. I'll give it a shot!