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Help MultiSIM and Input Signal

A

-=Almazick=-

Jan 1, 1970
0
Can anyone please help me out. I'm using MultiSIM 2001 and can't figure out
how to simulate "Signal from Gear Position Sensor" from schematic????
http://www.bluegauges.com/gpi_stuff/gpi_schematic.gif

Here is some more info about schematic

It basically uses comparators to compare the voltage coming from the GPS
(Gear Position Sensor) to predetermined levels and then will ground the
negative lead of the appropriate LED on the display. The LED's will be lit
up in a continuous style. R1-R7 = The resistors form a ladder that breaks
up the 5v from the voltage regulator (U1) into reference signals to
determine at what voltages the LM339AN (Comparator) will use to ground each
corresponding LED.
The comparators in this circuit will turn on each LED as follows:

1st LED = Anything over 1.022v

2nd LED = Anything over 2.043v

3rd LED = Anything over 2.660v

4th LED = Anything over 3.356v

5th LED = Anything over 4.052v

6th LED = Anything over 4.526v
 
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