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OrCAD simulation of 74ac14 hex-schmitt trigger

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kicom

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Hi

I tried implementing a schmitt trigger oscillator using orcad 9.
But it does not show the any waveform.just a dc of supply voltage at output
Why is that???
This is my circuit diagram
orcad1.jpg
 

kicom said:
Hi

I tried implementing a schmitt trigger oscillator using orcad 9.
But it does not show the any waveform.just a dc of supply voltage at output
Why is that???
This is my circuit diagram
View attachment 111087
Click to expand...

===============================

Hello, all right
I did the same circuit using Orcad 16.6 and got the waveform simulation in Orcadorcad.jpg
 

eletmoraes;1397594I did the same circuit using Orcad 16.6 and got the waveform simulation in Orcad[/QUOTE said:
Your circuit produced an output high of +6V when it had a +5V supply??

I suspect that the original OrCAD used did not know anything about the 74AC14 IC.
Click to expand...
 

Remove the short circuit from the inverter output to GND, and your circuit should (may) work.
 

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