Resistor Color Code Chart – Understanding Resistance Color Coding

jojo March 20, 2014 2 Comments
“Color coding” is used in electronics to identify between different components. In the case of resistors, color coding is used to identify a specific resistance value, for example a 100 ohms resistor or a 1 kilo ohms resistor with 5% tolerance. Electronic components like resistors are very small in size and its difficult to print its value directly on to the component surface. Hence a standard was formed in 1920 by then Radio Manufacturers Association (now part of EIA...
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3 Books to Learn Arduino – Review of the Best Arduino Books

john March 20, 2014 3 Comments
In this article, we provide you review of 3 popular books that can provide you good knowledge in Arduino platform. These books give all the basics needed in electronics as well as programming. Simple as well as complicated projects are also provided with detailed explanation and codes so that the reader can get some application level skills as well. These books are ideal for the novice as well as expert in electronics, who would like to begin playing with...
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Online Tool to Calculate Resistor Color Code – The Story Behind Scenes

jojo March 13, 2014 7 Comments
We have been working on an online application to calculate resistor color codes for the past 2 weeks. If you were subscribed to our Facebook Feed, you might already have tried the tool. We got really good feedback about the tool from people who have tried it. If you have not tried the tool yet, here is the link to access the tool – Resistor Color Code Calculator. Why one more tool ? We know there are many tools...
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3 Good Books to Learn Power Electronics

john March 20, 2014 No Comments
Power electronics is the most classified field in electronics where the switching process in power supplies, power converters, inverters, and motor drivers are carried out. A wide application of different electronic components like Diodes, Transistors, MOSFET’s, Thyristors, SCR, GTO, and many more are used. CircuitsToday has provided a lot of valuable contents to get a better idea on the basics of power electronics. But, for engineering students, and other who take this subject for higher studies, it is always...
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4 Books to Study Digital Electronics

john March 20, 2014 3 Comments
From laptops to mobiles and cars to kitchen appliances, human efforts have been significantly reduced by the introduction of digital devices. As a student, it is essential for all of us to know the basics of digital electronics. CircuitsToday has provided a list of 4 very good books in this subject. It is being used by universities all around the world for basic reference as well as advanced studies. All these books have been reviewed in detail, and the...
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Line follower robot using 8051 microcontroller

admin January 28, 2018 23 Comments
Line follower robot using 8051 Line follower robots were one of the earliest automatic guided robots. They are able to follow a line marked on a contrasting background, usually a black line on a white surface or a white line on a black surface. Usually, the line follower robot works on a closed loop feedback algorithm where the feedback from the line sensor is used by the controller for correcting the path of the robot. The sensors are usually...
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Invention History of Television

john December 12, 2013 1 Comment
Popularly called the “idiot box,” the television has become a vital part of our lives. Can you remember the days when there wasn’t a television set at your home? But, when and how was the television invented? Who was the brain behind this magnificent invention? Well, the history of invention of the television can be contributed to many great minds. In fact, it was not just a single idea that came to the fore, but a combination of inventions...
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The Invention Story of Barcodes

john December 11, 2013 No Comments
Without the application of barcodes, sales at stores would have been a very tedious process. The bar codes help a lot in effectively keeping an eye over the sold out items in a store. The brain behind the invention of barcodes should certainly be a ‘business’ mind. Well let us have a peep into the history of invention of barcodes. To start with, it is important to know what a barcode is. Barcodes represent the object to which it...
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Invention History of the Telephone and the Controversies

john December 10, 2013 No Comments
The wonderful invention of the telephone is the result of work done by a number of individuals, the history of which involves a collection of claims and counterclaims. The ultimate development of the modern electrical telephone involved a range of lawsuits founded upon the patent claims of quite a few individuals and a lot of companies. The invention history of the modern telephone starts in the year 1844 from the conception of the idea of an electric voice transmission...
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The Story Behind the Invention of Field Effect Transistors

john December 10, 2013 3 Comments
No one can certainly imagine any electronic device without the presence of transistors. In that case, what was the idea behind the invention of transistors? Who were the people behind its invention and advancements? What was the real purpose behind the invention of field effect transistors? And how did it emerge? What are the current applications and advancements of these transistors? Have you ever wondered about these? If yes, then this write up will help you in knowing more...
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Invention Story of Mobile Phone

john November 28, 2013 4 Comments
Mobile phone, the most common gadget in the present era, is considered as the greatest gift to the mankind. Can you ever imagine life without this device? No wonder the mobile phone has become an indispensable part of our lives. Of course, the origin of this gadget is as interesting as its use. Starting from bulky devices that were as long and heavy as one’s forearms to ultra thin and techno savvy handsets, the mobile phones have certainly covered...
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The Story Behind the Accidental Invention of X-Ray

john November 26, 2013 No Comments
When people go to a doctor for some pain or abnormality, the very first word the medical practitioner utters is ‘It is better to take an X-ray scan, because only then I can come to know the exact problem.” Well, have you ever wondered what X-rays are and who was the great mind behind this? Read further to have an elaborate view on the invention and inventors of the X-ray. Before getting to know about the history of invention,...
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The Invention History of Fuel Cells

john November 23, 2013 No Comments
Without energy, would anything exist in the world? Living organisms like you and me and the flora and the fauna require some form of energy to survive. A bike, car, motor, television, everything requires some energy to start up, accelerate and even to stop. Thus, form of energy required for the survival or for the sustainability is termed as the fuel energy. The fuel may be any form of energy. Say for example, the food we consume may be...
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Invention Story of Fiber Optics

john November 28, 2013 2 Comments
There are people who always want to learn more on what they use and what they employ in day to day life. If you are into such a pool of people, then here is a perfect write up that will make sense over the story behind the invention of fiber optics. The article is centered on the people involved who dedicated their thoughts and energy over the creation of fire optics. There must be controversies in every single action....
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Interfacing dot matrix LED display to 8051

admin November 13, 2013 15 Comments
Interfacing dot matrix LED display to 8051 microcontroller. LED dot matrix display. An LED dot matrix display consists of a matrix of  LED’s arranged in a rectangular configuration. The desired character or graphics can be displayed by switching ON /OFF  a desired configuration of LED’s. Common display configurations available are 7×5, 8×8, 7×15, etc. LED dot matrix can be used in simple display applications where the resolution is not a big concern.  The figure below shows the arrangement of...
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The Story Behind the Discovery of Electromagnetism

john November 21, 2013 4 Comments
Electromagnetism Once, a naughty child took a little chalk to his teacher. He asked what it was made of. The teacher answered that it was made of atoms. Then, the teacher continued that the atoms were made of electrons, protons and neutrons. The child interrupted and questioned if the chalk is really made of atoms and the rest of the jargon words, why the atoms are not separated and how they are united. The teacher threw a gentle smile...
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Invention Story of Electrocardiography (ECG) by Willem Einthoven

john November 7, 2013 No Comments
Invention of Electrocardiography (ECG) Have you ever wondered about how medical tools and equipments were designed? Ever raised a question if they were designed by a physician himself or a mechanical scholar? If yes, here is an interesting article that will fit your inquisitive nature. Hope you would have come across this device, the most essential electronic medical device, the Electrocardiogram or ECG. Read further to know about the invention story behind this most useful tool. Let us start...
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Invention History of Phototransistor and Photodiode

john November 6, 2013 1 Comment
Before touching the main topic of the invention history of the phototransistors, it is important to have a basic understanding on what phototransistors and photodiodes are. In simple words, a phototransistor is a transistor operated by light rather than electric current. In brief, a phototransistor is a bipolar transistor enclosed in a transparent case so that light can reach the base collector junction. This being the case of phototransistors, a photodiode is a kind of photo detector that is...
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Microprocessor – Invention History & Story Behind the Success of Intel

john November 5, 2013 1 Comment
Microprocessor – Invention History A simple integrated circuit that carries the central processing unit of a computer is the Microprocessor. Are you not fascinated to know what the history behind the invention of this tool is? If yes, this write up will help you know completely about how it was designed and the brains behind the scene. Before you know about the invention history of a microprocessor, let us check out what a real microprocessor is and what it...
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Invention History of Liquid Crystal Display (LCD)

john November 5, 2013 5 Comments
The history and development of the Liquid Crystal Display (LCD) is rather complex. The story of the LCD had an unusual beginning by an Austrian botanist in the 19th century. Though the LCD made a different and unstable start, its development proceeded from early successes like the pocket calculator to the key milestone of a flat panel television display that can be hung on a wall. The origin and development of the LCD spans the world’s major industrial centers...
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Invention History of C Programming Language and the Development of UNIX

john October 31, 2013 6 Comments
Invention History of C Programming Language There would be no surprise in saying that the C language literally shook the computer world? The impact of C cannot be underestimated because it completely changed the perspective with which programming was approached. The birth of the C language was a direct result of the need for a structured, efficient and a high level language that was capable of replacing the assembly code when creating systems programs. On the whole, The C...
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Invention History of Light Emitting Diode (LED)

john October 31, 2013 4 Comments
Most of us are aware that the semiconductor light-emitting diode or the LED is the major component of today’s technology. All our houses have plenty of tiny glowing indicators provided by LEDs; these indicators are employed for various aspects like reading CD and DVD disks in computer and game console drives or to transmit signals from remote controls to electronic equipment. Cars that are equipped with LED indicators are increasing in number these days. Most significantly, it should be...
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Capacitors – Invention History and the Story of Leyden Jar

john October 25, 2013 No Comments
Capacitors are a great example to prove the fact that even the simplest of devices can become complex over the years; in case of capacitors, it is nothing more than an insulator between two conductors and it has become pretty complex in this 250 years of technical evolution!! Almost all of us are familiar with the static charge that is generated by friction – a phenomenon known as triboelectricity. When you walk on a carpeted floor, pull a transparent...
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Radio-Invention History & The Story of Fight for Patents

john October 24, 2013 No Comments
Radio – Invention History The invention history of the radio is not only interesting but rather long as well. If you ask who invented the radio, probably you will get the name Marconi. But, was it really Marconi who invented the radio? Well, you have to determine for yourself after going through the journey of the invention history of the radio. There are a lot of knots to be untangled if you want to arrive at an answer as...
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Microcontroller – Invention History and Story Behind the Scenes

john October 23, 2013 4 Comments
Invention History of Microcontroller Would you believe that each one of you is using at least 20 microcontrollers in your house??!! Well, that’s a fact. There are more than two billion microcontrollers being produced every year. Almost everybody in developed as well as developing nations cannot think of a day without using microcontrollers. The microcontroller is an embedded computer chip that controls most of the electronic gadgets and appliances people use on a daily basis, right from washing machines...
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