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Old 04-06-2014, 12:08 PM   #25 (permalink)
P-hack
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mucking about with resistor values:
Code:
tap   divider   sense  watts   resolution per bit
12v   20k/10k   4v     0.005   0.01171875v
24v   50k/10k   4v     0.010   0.0234375v
36v   80k/10k   4v     0.015   0.03515625v
48v  110k/10k   4v     0.020   0.046875v
60v  140k/10k   4v     0.025   0.05859375v
72v  170k/10k   4v     0.030   0.0703125v

max bit level rounding error @ 72v = +-0.123046875v

Last edited by P-hack; 04-07-2014 at 10:20 AM..
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