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)?

Have you ever thought of “what is PLC and why it is called as Programmable Logic Controller?” You can think for a while before you...
2 wire 3 wire 4 wire

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....
Harmonics current

What are Harmonics current in Power System?

I was working in a factory as a plant maintenance engineer. While doing maintenance work, I found that few motors of the plant were...
Battery-less Cellphone

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

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...
Transparent Luminescent Solar Cell

Now our windows can also generate Electricity

Yes, you have heard it right. Now our windows can also generate electricity. A remarkable achievement by the team of Michigan State University researchers...
How to Troubleshoot Contactors

How to troubleshoot contactors?

You are solving a breakdown and you find the power circuit and control circuit all correct. Scratching your head, you are thinking – what...
Types of Contactors

Types of Contactors and their Applications

In this article, I am going to talk about different types of contactors and their applications. If you still do not know about the...