Procedure
1. Set the switch to high position.
2. Connect an output of an alternate power source Vvar to the AM input of the modulator. Check that you got the following system
3. Change the potentiometer and you will notice how the signal power changes accordingly.
4. Draw a table with voltages form 0V to + 9V. Near each voltage write the carrier wave amplitude.
5. Calculate deltaVc for each voltage
6. Calculate ka for each deltaVc
7. Draw a graph of the amplitude dependence on the input voltage.
image9
