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Paul,
Do you have a schematic for the Op AMp circuit? What kind of gain are
you looking for?
Joe Berki
Limo EZ
Yes we do. Bob White did it. We need a gain of two.
The 555 pulse varies from 1 msec to 9.5 msec
while the mass airflow sensor puts out 0 to 5 volts.
We will make the gain adjustable for tuning purposes.
Maybe one pot is all we need for leaning. The same pot that
changes the gain. The 20K feed back resistor would become the leaning
pot.
--
Paul Lamar ...No rotor no motor.
Bob, I was looking through my op-amp drawer and I found two dozen
TLC274's Are these about equivalent to the TLC272 ?
--
Paul Lamar ...No rotor no motor.
Hi Paul,
Yes, those are the 4 per package version in a larger package. They'll
work just fine.
On the question of richening the mixture, it is also possible to get
nonlinear gain from the op amp by playing around with the feedback loop
if that's found to be necessary down the line.
Bob W.
Thanks Bob.
What would a non inverting version look like?
--
Paul Lamar ...No rotor no motor.
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