100+ Essential Electrical Symbols as per IEC Standard
Have you seen electrical drawings? It has only symbolic representation. Sometimes if you have not come across a particular symbol it is very hard...
Inductive Proximity Sensor: Working Principle and its Application
An inductive sensor is a type of proximity sensor.
What does proximity sensor mean? Proximity sensor means - if any object comes into its vicinity,...
How do LED Wickets in Cricket works?
If you are watching cricket then you might have noticed flashing LED Wickets system. The bails and stumps LED lights flash when the ball...
12 Must have Electrical Tools for Electrical Works
I was working as an Electrical maintenance engineer. An operator urgently called me to attend to a breakdown. In urgency, I forgot to carry...
What is PLC (Programmable Logic Controller)?
If you are associated with Industrial Automation, then you might have heard about PLCs – right?
So, what is PLC? and why the name –...
What is the difference between 2 wire 3 wire and 4 wire transmitters?
Wiring a process instrument is quite hectic. Because, before you wire it you should know whether the transmitter is 2-wire, 3 wire or 4-wire....
What is Harmonics in Electrical?
If you are facing the problem of random failure of motors and drives, nuisance tripping of circuit breaker and transformer overheating, then it could...
World’s first Battery-less Cellphone Invented
Technology is moving very fast. Washington University researchers have invented battery-less cellphone.
How the battery-less cellphone works?
Question arises 'how a cell phone can work without...
Light Dependent Resistor: Working Principle and its Applications
What is an LDR?
An LDR is a photoelectric device. LDR stands for Light Dependent Resistor also known popularly as photo-resistor.
Working Principle of LDR
The semiconductor...
Lithium-ion Batteries for Electric Vehicles
The lithium-ion batteries are integral part in all the Indian Space vehicles including the PSLV, GSLV and satellites. The indigenous batteries can perform for...