Quote:
Originally Posted by dcb
the comparitor is not picking up the hold portion of the injector signal.
so you can't fiddle with that potentiometer and get a longer low pulse out of the comparitor? Have you looked at the opto-isolator version?
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I'll check it out. The comparitor picks up all of the positive portion of the injector pulse. I need to bias the signal so it only sees the middle to the top. Then it will see only the pulse width.
I am adding a variable resistor to a B- to Injector in and a blocking capacitor to the ECU input signal to lower the signal B-. I may have more to do.
I hope to lower the signal so the bias is set lower than -5 to -15 volts so all the comparator will see the actual pulse width.
I need a - 15 volt source. I am trying a - volt pump from the actual injector pulse! I'll keep you posted.