Junction Transistor - Transistor as an Amplifier (Ce-configuration)

With the help of necessary circuit diagram, describe briefly how n-p-n transistor in CE configuration amplifies a small sinusoidal input voltage. Write the expression for the ac current gain

In a CE transistor amplifier, the audio signal voltage across the collector resistance of2 kΩ is 2 V If the base resistance is 1 kΩ and the current amplification of the transistor is 100, the input signal voltage is

Figure shows a block diagram of a detector for amplitude modulated signal. Identify the boxes ‘X’ and ‘Y’ and write their functions.

Under what condition does the transistor act as an amplifier?

Derive an expression for voltage gain of the amplifier and hence show that the output voltage is in opposite phase with the input voltage.

Write the functions of three segments of a transistor.

Figure shows a block diagram of a transmitter identify the boxes ‘X’ and ‘Y’ and write their functions.

Draw a circuit diagram of a p-n-p transistor and explain how it works as a transistor amplifier