Electronics 1.0

BASICS OF ELECTRONICS

PART: 1.0

ELECTRONICS This word fascinates me the most. Electronics is a vast area of study in the field of Science and Technology and one of the most interesting branches of Engineering.
In Brief we know that Electronics is the branch of engineering I which we study about flow of electrons through vacuum or gases or semiconductors.
NOW,SO FIRST QUESTION IS THAT WHO CAN FOLLOW THIS BLOG SO I WILL SAY THAT IF YOU HAVE A KEEN INTREST IN ELECTRONICS AND DON’T KNOW FROM WHERE TO START OR WANT TO START LEARNING ELECTRONICS FROM BASICS TO ADVANCE LEVEL THIS IS PERFECT PLACE

Image source from “fundamentals of electric circuits 5th edition Charles K. Alexander and Matt”

In coming blogs I will show you some of Arduino the awesome and cool applications of electronics using electronics devices not to say about projects but it will come in later posts.

Some Important Terms:


1. Rectification: The conversion of a.c. into d.c. is known as rectification. This is done by using diodes about which we will see in coming time.
As we know that electronics devices works on d.c. so it is necessary to know that how a.c. power are converted into d.c. power with high efficiency.

ABOUT FULL WAVE AND HALF WAVE RECTIFIER WE WILL STUDY IN DETAIL LATER THIS IS ONLY BRIEF DISCUSSION.

2. Amplification: Raising the strength of weak signal is known as amplifications. It can be done by many electronic devices such as transistors, MOSFET. Amplification is a linear operation. Amplifiers can be categorized in two different ways:

1. By the frequency of electronic signal being Amplified. e.g. Audio Amplifier, R.F, Amplifier.

  2. Second in which quantity, voltage or current is  amplified

Amplifiers can be divided into voltage amplifier, current amplifiers, trans-conductance amplifier and trans-resistance amplifier..

3. Oscillators: Electronic devices can convert d.c. power to a.c. power of any frequency. When performing this function these electronic devices are known as oscillators.

4. Semiconductors: Those substance whose resistivity lies between conductor and insulator is known as semiconductors. There resistivity lies between 10−4 to 0.5 Ωm.

Semiconductor has brought revolution in the field of Engineering.

They have so many advantage that you have ever imagined. Examples are silicon family. All semiconductors are crystalline in nature.
 

Semiconductor conductivity can varied with the variation in temperature. At low temperature they act as conductors and at high temperature they act as insulators.

Superconductor is a phenomenon which happens at 0(zero) Kelvin.

                                          

Those substance whose resistivity is very low and allow conduction of heat,electricity or any other type of energy is known as conductors.Their resistivity lies between 
10^-6 to 10^-4Ωm.Examples are Copper,Aluminum,Iron etc.

6. Insulators: Those substances which have very high value of resistivity and doesn’t allow any energy i.e. electrical or heat is known as insulators. Their resistivity lies between 10¹⁰ to 10²⁰ Ω-cm.

Any good dielectric material is known as insulator. Examples are wood, plastics, and other non metallic things except Graphite.

There are more interesting facts and definitions about these substances which I will tell you, actually this is just some fundamental definition which you should know in order to understand things clearly.
There is one more term most of us uses is semi insulator these have resistivity between 10³ to 10¹⁰ Ω-cm.