Electronics world

Objective The main objective behind this project is to design a simple, cost effective and efficient brushless DC (BLDC) motor drive for solar photovoltaic (SPV) array fed water pumping system. The project includes automatic changeover circuit to switch power source between solar panel and battery based on the presence and absence of light. The pump works on the signals received by the sensors used for automatic irrigation system. Abstract This project proposes a simple, cost effective and efficient brushless DC (BLDC) motor drive for solar photovoltaic (SPV) array fed water pumping system. A zeta converter is utilized in order to extract the maximum available power from the SPV array. The proposed control algorithm eliminates phase current sensors and adapts a fundamental frequency switching of the voltage source inverter (VSI), thus avoiding the power losses due to high frequency switching. No additional control or circuitry is used for speed control of the BLDC motor. The

1. INTRODUCTION We use many different types of communication in control applications to control home appliances, industrial appliances, and other type of automation. There are two types of communication that is we generally use - one is wired and other one is wireless. In wireless communication we transmit signal wirelessly, like using radio frequency (RF) and in wired communication in which we use wires like copper wire. In this project “DTMF Based Home Automation System” we are going to control our home appliances wirelessly. Other important feature of this project is, that we are not going to use any microcontroller in it. . The remote control used in home automation systems, is a wonderful feature that everyone would like to enjoy, if they were not expensive to install, maintain, and able to be use from long distance. With such automation one can switch ON and OFF lights, Ac etc. from a remote distance. In our project we have tried to implement this home automation technique u

What is a Programmable Logic Controller, or PLC? If you’ve used a computer, and you’ve used an Arduino, Raspberry Pi, or any number of other microcontrollers, you might think that a computer based on the physical world is a relatively new concept. A digital input causes some sort of conditional logic to make something blink, your robot to move, a signal to be transmitted, or any number of other things. This type of logic has, in fact, been going on for quite some time in industry. In 1968, a man named Richard E. Morley proposed the Modular Digital Controller (MODICON) to a car manufacturer. This MODICON, or programmable logic controller (PLC), was used to replace complicated relays with virtual programmable relays, making machinery changes in industry much, much faster. This later became the commercial MODICON 084, which led to many more manufacturers making their own version. Here’s an article on the  history of the PLC  if you’d like more background. How do You Progra

Embedded systems are a cornerstone of the electronics industry today. An embedded system is a computer or processor based system that has been designed for a specific purpose. The system gains its name from the fact that the software is embedded into it for a particular application. The embedded system is not like a PC or other computer that can run a variety of programmes and fulfil a whole host of tasks. The item using an embedded system is designed for a specific task and has its software preloaded, although updates may be undertaken from time to time. Embedded systems basics It may be asked what is an embedded system. With many processor based systems and computers it is useful to define what an embedded system is. A convenient definition for an embedded system is: An embedded system is any computer system contained within a product that is not described as a computer. Using this embedded system definition it is possible to understand the various basic characteristics

A guide for electronics engineering students who are just starting out their academic studies and also those who want to set themselves apart in a competitive career environment  L ast month, the idea about this article came to my mind just after watching the movie 3 Idiots. By now, I guess you haven’t been able to escape from being influenced either. The movie—a fairly serious take— essentially depicts how eager we are to embrace mindlessness and how keen we are to promote a culture where education is purely examination-centric without real-life application.  It’s time that you get out of this ‘aka idito’ vagueness of just following the herd and passing the exam. Here is your ‘why’ and ‘how to’ guide. Why focus on practical knowledge? “There is a gap between engineering course content and the requirements of the engineering services industry,” says Krishna Kant, senior programme manager, academic alliance programme–South Asia & Russia, EMC, from his vast t

WiTricity the Future of Electricity   One spends their lifetime plugging things in. Be it either mobiles or laptop chargers or your television sets. But that’s all that’s about to change! There is no argument in that we humans love electricity. We love that stuff so much that you can get an idea about it just by walking out on the street. There is about trillions of money spent in setting up power stations and wires carrying electricity from where it is generated to our homes and offices.  Not only this. We love batteries too! An object that gives us power for a while before ending up in the garbage.  But then there is a negative aspect to all this. Wires and batteries are awful. Just think about it, overhead wires gets damaged in rough weathers and can lead to calamities that can claim a human life.  Plus imagine getting tangled in one of those wires under your computer desk. I know it’s pathetic. As for the batteries, 40 billion of them are manufactured every