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Old 10-22-2008, 12:00 AM   #4 (permalink)
Coyote X
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An LM331 voltage to frequency converter could be used for the injector signal. It would take a bit of a rewrite to measure the frequency instead of pulse width but nothing bad hopefully.

Another possible option for dc use would be use a voltage to pwm circuit to feed the injector signal as is. The shunt resistor would have to have a filtering circuit to give a smooth signal to the converter circuit.

That is about all I can think of right off for using it as an ev monitor

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