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Simulation on Proteus of FM Demodulation with 4046


Hello everyone,

First of all sorry for my bad english.

I want to simulate on Proteus FM demodulation with 4046.
I know that the center frequency Fo depends on the value of R1 and C1.
I try to do this application circuit and it doesn't work too:
I try to change the value of Fo according to the following curves:
I conclude that the problem on proteus is from that part that change everythings and i don't understand how to control it :
"Frequency Range" and "Frequency offset" in "Advanced Propreties"
I look at anywhere and i don't know why !!!
I'm loosing my head ^^

Thank you in advance!


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