Introduction To Electronics, Components and Applications

INTRODUCTION TO ELECTRONICS

Table of Contents

Introduction

Electronics is a branch of the science and engineering that controlling and manipulating currents through the use of circuits and various components. It is an integral part for our modern society, advance research, and innovations .

We can say that electronics is the technological innovation of movement of electrons such in any semiconductor.

In 1897 when vacuum diode was designed by J.A. Flemin, but for Useful gadgets came in 1906 when machine triode was designed by Lee De Forest. This system could increase electric powered alerts. Later, around 1925, tetrode and pentode pipes were designed.

Electronics Components :

Some of the most commonly electronic components are

1. Resistors 
2. Capacitors
3.  Inductors
4.  Diodes
5.  Transistors
6.  LEDs
7.  Crystal Oscillators
8.  ICs
9.  Micro controller
10.  Micro processor
11.  Voltage Regulator
12.  LCDS
13.  Relays
14.  Sensors
15.  Heat sinks
16.  Fuse
17.  Transformers
18.  Switches

Electronics Applications:

1.  Consumer electronics.
2.  Information and computing technologies.
3.  Communication systems.
4.  Medical electronics.
5.  Industrial electronics.
6.  Defence and Aerospace electronics.
7.  Power and energy electronics.
8.  Media and Entertainment.
9.  Environmental monitoring.
10.  ATM Banking and financial systems.
11.  Space exploration.
12.  Security electronics systems
13.  Education and training systems.
14.  Automation systems.
15.  Traffic management electronics systems

Resistor

The resistor is one of the main components of the circuit ,for making the circuit requires the various components like resistors, inductors, capacitors, battery sources, connecting wires are required.

What is Resistor?

Resistor is a passive electrical component with two terminals that are used for limiting or regulating the flow of electric current in electrical circuits.

The main purpose of resistor is to reduce the current flow and to lower the voltage the circuit. It is made of wires which are coiled around a ceramic rod and the outer part of the resistor is coated with an insulating paint with resistance value colour code .

What is the SI Unit of Resistor?

The SI unit of resistor is Ohm.

Symbol of Resistor

Each resistor has one connection and two terminals.

Types of Resistors 

Linear Resistors

Non-linear resistors

What is Colour Coding of Resistors?

What is Tolerance in Resistors?

Resistors in Series

Resistors in Series Formula

Resistors in Parallel

Resistors in Parallel Formula

Applications of Resistor

Frequently Asked Questions – FAQs

Q1. What is a resistor?

A Resistor is an electrical component that slows down the flow of electricity in a circuit, like a speed bump on a road. It is used in electronics to control and manage the flow of electrical current.

 

Q2. What is the SI unit of resistor?

The SI unit of resistor is Ohm.

 

Q3. What are the two types of resistors?

Two types of resistors are:

Linear resistor

Non-linear resistor

 

Q4. What are various types of non-linear resistors?

Different types of non-linear resistors are:

Thermistors

Varistors

Photo resistors

 

Q5. Which type of resistor is used in photographic devices?

In the photographic devices, photoresistors are used.

Capacitor:

What is a Capacitor? Understanding the Basics

When it comes to electronics, capacitors are like the unsung heroes. They may not get as much attention as flashy gadgets or powerful processors, but they play a crucial role in making our electronic devices work smoothly. In simple terms, capacitors are tiny electronic components that store and release electrical energy. Let's dive into what capacitors are, the different types, and how they're used.

Definition of Capacitors

Imagine you have a water bucket. You can fill it up with water, and then you can pour that water out when you need it. Capacitors work a bit like this bucket, but with electrical energy instead of water. They store electrical energy when you give them a charge, and they release that energy when it's needed.

A capacitor is like two metal plates kept apart by something that doesn't conduct electricity, called a dielectric. When you connect the plates to a power source, one plate gets positively charged, and the other negatively charged. This separation of charges creates an electric field between the plates, and this electric field stores energy.

Types of Capacitors

Just like there are different types of buckets for various purposes (think of a drinking glass, a bucket, and a swimming pool), there are various types of capacitors, each designed for specific applications. Here are a few common types:

Electrolytic Capacitors: These are like the big storage tanks of the capacitor world. They can store a lot of energy and are often used in power supply circuits.

Ceramic Capacitors: These are the small, versatile capacitors used in many electronic devices. They are handy for filtering out noise and stabilizing voltage.

Tantalum Capacitors: They are compact and offer good performance, making them suitable for various electronic applications.

Film Capacitors: These are used for precision timing and filtering in electronic circuits.

Supercapacitors: Unlike regular capacitors, supercapacitors can store a massive amount of energy and release it quickly. They're often used in applications where rapid energy bursts are required, like in hybrid cars.

Uses of Capacitors

Capacitors have countless uses in the world of electronics.  Most common applications are below:

Smoothing Voltage: They help stabilize electrical voltage, ensuring that devices receive a consistent and steady power supply.

Signal Coupling: Capacitors allow AC (alternating current) signals to pass through while blocking DC (direct current) signals. This is crucial in amplifiers and audio systems.

Timing Circuits: Capacitors can control the timing of various electronic processes, making them essential in clocks and timers.

Noise Filtering: They filter out unwanted electrical noise, ensuring clean and clear signals in audio and radio equipment.

Motor Starters: In appliances like refrigerators, capacitors help start electric motors by providing an initial boost of power.

In conclusion, capacitors are like the silent workers behind the scenes in the world of electronics. They store and release electrical energy, come in various types, and find their place in a wide range of devices, from your smartphone to your car. So, the next time you flip a switch or use your gadgets, remember that capacitors are quietly playing their part in making it all work.

What is capacitor and SI unit?

farad