How does a LCD work?
Metal halide (MH) lamp
Metal halide (MH) lamp provides high efficiency, long service life and excellent colour rendition. It consists of an arc tube enclosed in a glass chamber made up of borosilicate glass. Arc tube is also called as discharge tube or “burner”. The arc tube consists of argon gas, mercury and metal salts such as sodium iodide. They operate at higher temperatures and pressures.Ballast is used to supply a high starting voltage. The ballast also regulates the lamp starting current and lamp operating current. (more…)
How refrigerators work?
Modern fridges are available in various sizes with different features incorporated by the manufacturers. Apart from these features the basic principle of refrigeration of course remains the same. The method of deployment hasn’t changed much since from the aforementioned Frigidaire unit in 1923.What is inductance?
It is a property of a circuit element called inductor to store energy in the magnetic field when current passes through it. A basic inductor can be made by…
What is voltage?
There are two types of charges namely positive charge and negative charge. As we all know these charges are opposite and they attract . A work is done to separate…
How do Fuel Cells Work?
Fuel Cell Fuel cells cleanly and efficiently convert chemical energy from hydrogen-rich fuels into electrical power and usable high-quality heat in an electrochemical process that is virtually absent of pollutants.…
Difference between mico processors and micro controllers
Microprocessor It has many support devices like ROM, Read-Write memory, Serial interface, Timer, I/O ports etc. All these support devices are interfaced to microprocessor via a system bus. All…
How does a car Air Conditioner work?
Air conditioning works continuously and has refrigerant continually circulating around a sealed system. Most automotive A/C systems are made up of six main components:-
- Compressor and mounting brackets
- Condenser
- Receiver/ drier
- Expansion Valve
- Evaporator
- Hose & fittings
The easiest way to explain how the system works is to trace the refrigerant as it flows through the system:- (more…)
How does a speaker work?
Speaker is a device which converts electrical signal into sound waves. By
its property, sound is made when an object makes the particles around it
vibrate. These vibrations travel through the air, and reach our ears. Our brain
interprets this motion as sound. The amplitude of the waves corresponds to the volume level we hear and the frequency decides the nature of sound. (more…)
How does a scanner work?
Scanners are used to create a soft copy of available photos and documents.
When we open the scanner we can see a glass plate. We have to place the
document that we need to scan over the glass plate. (more…)