Draw a labelled circuit diagram for a common emitter amplifier using n-p-n transistor. Write down the expression for its voltage gain. What is the phase difference between input and output signals?

Draw the circuit diagram of a common emitter amplifier using n-p-n transistor. What is the phase difference between the input signal and output voltage? State two reasons why a common emitter amplifier is preferred to a common base amplifier.

Draw a circuit diagram to show biasing of a p-n-p transistor. Explain the transistor action.

Draw the circuit diagram of a common emitter transistor amplifier. Write the expression for its voltage gain. Explain , how the input and output signal differ in phase by 180^(@)

Draw a circuit diagram of a transistor amplifier in CE configuration. Define the terms (i) Input resistance and (ii) Current amplification factor. How are these determined using input and output characteristics?

Discuss common-base configuration in amplifier using n-p-n transistor. Calculate its current gain and voltage gain.

(a) Show that a bubble AND gets is equivalent ot a NOE gate. (b) The number of electron-hole pairs in an intrinsic semiconductor is 2xx10^(19)m^(-3) at 27^(@)C and E_(g) is 1eV. Calculate the number of electron-hole pairs at 227^(@)C . Given that Boltzmann constant is 8.65xx10^(-5)eV//K or With the help of neat and labelled diagram, discuss the working of common emitter p-n-p junction transistor amplifier. Obtain expressions for voltage gain and current gain.

Draw a neat circuit diagram to study the characteristics of common emitter n-p-n transistor. With the help of a graph, explain the output characteristics of this transistor.