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?

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...

Contactors: History and Working Principle

Can you find contactors in your house?Of course, you can find contactor in the starter circuit of bore well pump. In this article, I...
Electric Danger

Which current is more dangerous, AC or DC?

Do you ever have an electrical shock? Well, many of us have the mindset that DC current is additionally dangerous than AC current....
What is current in electricity

What is current in electricity?

Let me make you understand what is current in electricity. Voltage exerts force on free electrons to move. Current is movement of free...
What is voltage in electricity

What is Voltage in electricity?

Understanding the Voltage Voltage is the force. We know that a good conductor of electricity has more free electrons. When voltage passes through this conductor, it...