R
Rex Turner
Hi.
I need to build a circuit that will run two vacuum sensors, buffer with op
amps (guessing here), and drive a 20 LED bargraph such that the display
shows centre LED when both sensors are balanced (equal vacuum) and lights up
one side or the other, relative to the imbalance. (Hope that is clear).
It is to monitor the state of tune / carby adjustment on a two cylinder
engine, 12v supply available - again, guessing that a 5v regulator will be
needed..
The boost gauge shown at
http://www.emergent.com.au/200sx/images/boost_gauge_schematic.jpg
and the AN1304 Pressure Gauge Bargraph document from Motorola have given me
some idea how to construct, but I am missing the complete picture.
If someone has the time and patience to assist a raw beginner then I would
be most grateful.
Can be contacted on r(dot)turner(at)bigpond(dot)net(dot)au.
Thanks,
RexT.
I need to build a circuit that will run two vacuum sensors, buffer with op
amps (guessing here), and drive a 20 LED bargraph such that the display
shows centre LED when both sensors are balanced (equal vacuum) and lights up
one side or the other, relative to the imbalance. (Hope that is clear).
It is to monitor the state of tune / carby adjustment on a two cylinder
engine, 12v supply available - again, guessing that a 5v regulator will be
needed..
The boost gauge shown at
http://www.emergent.com.au/200sx/images/boost_gauge_schematic.jpg
and the AN1304 Pressure Gauge Bargraph document from Motorola have given me
some idea how to construct, but I am missing the complete picture.
If someone has the time and patience to assist a raw beginner then I would
be most grateful.
Can be contacted on r(dot)turner(at)bigpond(dot)net(dot)au.
Thanks,
RexT.
