- Joined Sep 28, 2021
Hi all ,
I tried to simulate a modulation circuit which uses a comparator, following this click here .
The output I get at the 1 kΩ resistor is weird; it should be the same shape as the send signal above.
May I know what values of capacitor and inductor are used, and whether the resistor value at the output also affects the shape of the send signal?
Is my LTspice output correct (Oscillating wave output seems triangular) and should the carrier signal, audio signal and send signal be AC or DC? The video diagram shows all of them are DC.
I attached my LT Spice file below, can anyone make some adjustments so that the send signal would be more sinusoidal?
Thank you for reading and have a nice day
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