IF Amplifier

RF Amplifier

Power Amplifier

Voltage Amplifier

Lower thermal stability

Higher thermal stability

Lower operating voltage

Higher amplification factor

Less than 20%

About 50%

More than 60%

Unity

To produce modulation

To produce demodulation

To produce oscillation

To produce multiplexion

Increases the cut - in - voltage

Barrier width of junction increases

Junction ruptured and short circuited

No current flows through the junction