Transistor Amplifier
Make the Connections as shown in figure (A).
CH1 monitors the original waveform output from W1.
CH2 monitors the amplifier output .
Change the value of PV3, and observe its effect on the output.
Restore PV3 to 1.65V, and make the Connections as shown in figure (B).
CH1 monitors the EMF induced in the speaker's coil due to external vibrations . The speaker effectively functions as a microphone here.
Connect a piezo buzzer to W1, and set the frequency to around 3600Hz at which it resonates, and is loudest.
Screenshot
