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Inductive pickups (without integration) are no longer accurate since many loads are nonlinear. The magnetic field produced by a current in a wire is proportional to the magnitude of the current, but the voltage induced in a coil of wire is proportional to the derivative (rate of change) of the magnetic field through the coil. That means that if the current is something besides a sine wave, integration must be done to undo the derivative distortion.
A better way is to use a Hall effect chip to sense the magnetic field. The output is directly proportional to the magnetic field (which is directly proportional to the current), which is exactly what we want.
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If America manages to eliminate obesity, we would save as much fuel as if every American were to stop driving for three days every year. To be slender like Tiffany Yep is to be a real hypermiler...
Allie Moore and I have a combined carbon footprint much smaller than that of one average American...
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