⭐The Modulator :-
Simple ASK modulation implemented using relay. Still, works like IC 4051 MUX/DeMUX
⭐ The Demodulator :-
The output of the ASK modulator is fed to a diode with an RC filter. The Op-amp is used for stabilisation of the output
⭐ Working :-
Here, depending on the data bit (either 1 or 0), the carrier is transmitted not, respectively.
⭐ Legend :-
Red : Filter Output (the voltage across the capacitor)
Yellow : Bit input, 1 or 0
Green : Input signal, either c(t) or -c(t).
Purple : Final Output
