What is an amplifier?

Draw a circuit diagram of n-p transistor amplifier in CE configuration. Under what condition does the transistor acts as an amplifier?

An oscillator is an amplifier with

An oscillator is an amplifier with

Draw a circuit diagram of n-p-n transistor amplifier in CE configuration. Under what condition does the transistor act as an amplifier.

To use a transistor as an amplifier

In the use of transistor as an amplifier

To use a transistor as an amplifier