Power Supply Repair

The measurement and analysis of process parameters such as temperature, flow, conductivity, speed, viscosity and stress play a crucial role in providing information about the process/system under consideration. Parameter values are logged into a computer (using a process called data acquisition) and acquired data is analysed either in online or …

With expansion of the Internet of Things (IoT), we are looking at an ecosystem filled with sensors geographically distributed over large areas. This calls for a wide-area network (WAN) bridged by low-power communication technologies. Paromik Chakraborty of Electronics For You spoke to Gaurav Sareen, country director-India, Sigfox, to understand benefits …

Presented here is an LED lantern that also functions as an emergency light or a tent light. The design has all required functions, including on/off switch, maintenance-free rechargeable battery, integrated battery charger and more. The built-in battery can be recharged using any 500mA external DC input voltage ranging from 9V …

This simple telephone caller identification display can be very useful for bikers. While riding a bike or any two-wheeler, the cellphone is usually kept in a pocket. When you receive a phone call on your cellphone, you do not know who is calling unless you look at the screen. And …

Nucleus Vision is an Internet of Things (IoT) and Blockchain based customer identification company that allows brick-n-mortar retailers to identify any customer who walks into a store, in real-time, using Nucleus’ proprietary ION sensor technology. Abhishek Pitti, Founder & CEO, Nucleus Vision, in an interaction with EFY bureau, talks about …

Arduino board can also be used to control electrical devices and appliances over the Internet. Just by clicking a few buttons on a webpage, the devices can be operated from a remote location. For this, the board needs to be Ethernet-enabled using Ethernet shield. This project illustrates the point by …

Mixing liquids using a muddler or churner is a traditional technique. However, it is time-consuming and sometimes fails to mix these properly. Here is a low-cost and versatile hand mixer circuit. It can be used for making stuff like lassi, chhach (buttermilk), butter and lemonade, among others. The author’s prototype …

Recently, I had the opportunity to test the printed circuit boards (PCB) offered by JLCPCB. These tests were made in two different boards of the brand and here I’ll report my impressions about them. Due to the spread of the maker culture and the do-it-yourself (DIY) and easy access to …

This article presents a simple circuit to convert transistor-transistor logic (TTL) or pulse width modulation (PWM) signal to analogue signal using LM358 operational amplifier. The circuit can be used as an extension shield for Arduino or microcontroller (MCU) or TTL/CMOS signal generator. PWM-based digital-to-analogue converters (DACs) are often used to …

This article covers some important sensors used for different deep-sea applications, including civil, military, research, communication, seismic and energy. Mysteries of the deep sea, vastness of the blue waters stretching out to the horizon, and the tremendous potential of the oceans for military and civil applications have let humans explore …