The story behind the invention of vacuum tube Anything in Science has its own history and some hidden truths behind its invention. It must be fascinatingly curious for any science savvy person to know the invention story of technical tools, and other innovations of Science. This is one such write up which will help you know about the researches and the advancements in the invention of the vacuum tubes. Vacuum tube? Vacuum tubes are sealed glass tubes made of vacuum that facilitates the passage of electric current. They are also called as electron tubes and they may be sealed either with glass or with a metal ceramic mixture. The application of this invention does not stop with a single one. They serve multiple purposes like amplifying a weak current, converting an alternative current (AC) to direct current (DC), for the generation of oscillating radio frequency. The inventors! If there…
Invention of Integrated circuits – Behind the scene Have you ever heard the story behind invention of integrated circuits or what made people work on it? Well, if…
In this article, we are giving an introduction to MATLAB. This article is part of a tutorial series we are developing for MATLAB. We hope you to give…
Hi Friends, 2 years before, we have launched Forums in CircuitsToday with great expectations. However due to lack of time on our side, we failed to monitor the…
Transistors and its path of invention We all know “transistor” is an integral part of any electronic circuit/device. It is very rare to see any circuits built without…
The good definition of Pulse Width Modulation (PWM) is in the name itself. It means modulating/varying the width of the pulse (Not the frequency). To best understand what…
I am really excited by the amazing comments & responses I got for my two articles on PN Junction. If you have not read them yet, here they…
We all see Police using breathalyzers on drivers to check if they are under the influence of alcohol. Drink & driving is a crime in all countries. But…
This article is a guide for any one who is interested in knowing about the different types of LED’s available in the market. This can be considered as…
Usually we publish articles that are of interest only to the “electronics” community. However today I thought of publishing an article about career opportunities in Web Development &…
Very Large Scale Integration (VLSI), is a very vast domain and is known to be the best and most sought after field among all branches in electronics. Our…
This article is about a simple heart rate monitor using 8051 microcontroller. Like the previous 8051 projects, AT89S51 is the microcontroller used here. The device senses the heart…
This article is about interfacing a hex key pad to 8051 microcontroller. A clear knowledge on interfacing hex key pad to 8051 is very essential while designing embedded…
This article is a compilation of all 8051 based Electronic Projects and Circuits we have developed at CircuitsToday till date. We have one of the biggest collection of…
Ultrasonic range finder using 8051 . A simple ultrasonic range finder using 8051 microcontroller is presented in this article. This ultrasonic rangefinder can measure distances up to 2.5…
Contactless digital tachometer using 8051. A three digit contact less digital tachometer using 8051 microcontroller which can be used for measuring the revolutions/second of a rotating wheel, disc,…
PWM lamp dimmer. A simple and efficient PWM lamp dimmer using timer IC NE555 is discussed in this article. Yesterdays linear regulator based dimmers can only attain a…
In this article, we learn about PN junction diode characteristics in detail – like how to bias a PN junction (Forward & Reverse bias methods), behavior of PN…
This article is a compilation of the simple and popular audio circuits we have published over years in CircuitsToday. This list involves a collection of simple amplifier circuits…
Whenever someone decides to learn electronics, the first question that comes to his mind may be – “Where shall I begin?”. I would say, one shall begin at…
Delay using 8051 timer. The 8051 microcontroller has two independent 16 bit up counting timers named Timer 0 and Timer 1 and this article is about generating time…
The world around us is changing at a much faster pace than any one can anticipate. The world of “computing” has already seen great shifts from Desktops to…
In this article we will take a look at Debugging feature of Keil uVision. In Previous Article we had seen how to create project, hex file and building…
Basics of Image Processing Sight/vision is one of the greatest powers of a human being. Our eyes can tell us the shape, size, color of any and everything…
Software delay routine in 8051 In an 8051 microcontroller, it requires 12 cycles of the processor clock for executing a single instruction cycle. For an 8051 microcontroller clocked…
