Almost Same as Amplitude Modulator - I
The circuit uses four op-amps and a transistor.
First: Wien bridge Oscillator (produces carrier)
Second: Adder (carrier + message + clipped negative V)
Third: Clamped message signal
Fourth: Hold circuit using Op-amp and transistor
HOLD CIRCUIT:
Works as
Inverting amplifier when
V1(carrier) > V2(message)
Voltage follower when
V1(carrier) < V2(message)
# Hold circuit performs same function as differential amplifier in Amplitude Modulator I.
Give circuit a little time and it shall not disappoint you.
