Embibe Experts Solutions for Chapter: Semiconductor Electronics: Materials, Devices and Simple Circuits, Exercise 1: cbse-2019

Draw the circuit arrangement for studying the output characteristics of n-p-n transistor in CE configuration. Explain how the output characteristics is obtained.

A student wants to use two p-n junction diodes to convert alternating current into direct current. Draw the labelled circuit diagram she would use and explain how it works.

Draw the circuit diagram of a full wave rectifier and explain its working. Also, give the input and output wave forms.

How does an increase in doping concentration affect the width of depletion layer of a p-n junction diode?

Why cannot we use $\mathrm{Si}$ and $\mathrm{Ge}$ in fabrication of visible LEDs ?

Explain the terms 'depletion layer' and 'potential barrier' in a p-n junction diode. How are the (a) width of depletion layer, and (b) value of potential barrier affected when the p-n junction is forward biased $?$

Draw circuit diagram and explain the working of a zener diode as a dc voltage regulator with the help of its I-V characteristic.

What is the purpose of heavy doping of $p-$and $n-$sides of a zener diode?