Draw a circuit diagram of L.E.D. What are its advantages?

Draw a circuit diagram of L.E.D. Mention it's advantages?

Draw a circuit diagram of C.E. transistor amplifier. Briefly explain its working and write the expression for (i) current gain (ii) voltage gain of the amplifier.

Explain the formation of depletion layer and potential barrier in p-n junction. Draw the circuit diagram of a half wave rectifier and explain its working.

Draw a lablled circuit diagram of a Zener diode as a voltage regulator.

Draw a labelled circuit diagram of a transistor acting as a common emitter amplifier. What is meant by phase reversal?

(i) Draw a circuit diagram to study the input and output characteristics of an n-p-n transistor in its common emitter configuration. Draw the typical input and output characteristics. (ii) Explain, with the hepl of a circuit diagram, the working of n-p-n transistor as a common emitter amplifier.

Draw the circuit diagram of a half - wave rectifier using a p-n junction diode.

Draw a labelled circuit diagram of a transistor as a switch and draw its input and output graphs.

Draw a circuit diagram for series and parallel circuit with three bulbs.

Draw a labelled circuit diagram of a half wave rectifier and give its output waveform.