> >Power = I^2 x R so > >1 ohm 20A = 400W ! >0.1 ohm 20A = 40W >0.01 ohm 20A = 4W Yeah, it was late. :) If the hall device is non-linear, a LUT will solve that. _______________________________________________ http://www.piclist.com View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist