Demodulator circuit

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MrsssSu

Joined Sep 28, 2021
252
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Below is Triangular Modulation Output of a Triangle input wave
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HI all, I have been trying to understand modulation and demodulation circuitry as part of my hobby :)

The modulation circuit above works fine but when I connect the output of the modulator to the demodulator (as shown by blue arrow), the output of the modulator turns bad (Shown above) although I buffered it using op-amp as shown in circuit and the demodulator does not produce any output (The output should be a triangular wave) .

The demodulator chip circuitry is built from Texas Instruments at here and I followed the demodulator circuit at here. Does anyone know how to correct this? I attached my LT Spice file below for correction.


Thank you and have a nice day ahead:)
 

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