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Old 09-08-2011, 08:18 AM   #4 (permalink)
EcoModding Lurker
Join Date: Apr 2011
Location: Muskegon,MI
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The Beast - '93 Fleetwood Flair includes kitchen sink
90 day: 9.2 mpg (US)

The Bigger Beast - '03 Winnebago Sightseer Motor Home
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Tried an LM339 comparator circuit

Thanks for the new thread.

I finally got to add the pictures about my comparator circuit. My LM339 comparator squared up the whole pulse, not just the two pulses that get wider as I rev up the motor-in gear w/ brakes on- to load the motor. I need a better circuit to get just the pulse width change.
pictures of the traces here.

1993 Fleetwood Flair

Thaks, Lee

Originally Posted by winker View Post
For completness the following image shows traces for both sides of my injector (SPI), realtive to ground. The traces were recorded at different times, but you can see the relationship.
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