How many types of discharge lamps are there?

How many types of discharge lamps are there?

21.5.2.3 Discharge lamp types Discharge lamp types include low pressure mercury (fluorescent), induction, high pressure mercury vapour, mercury-blended, metal halide, low pressure sodium and high pressure sodium.

What is the most common discharge lamp type?

The most common examples of high intensity discharge lamps are metal halide lamps, sodium vapor lamps, mercury vapor lamps and xenon arc lamps.

What is discharge lamp explain any one type of discharge lamp?

Gas-discharge lamps are a family of artificial light sources that generate light by sending an electric discharge through an ionized gas, a plasma. Typically, such lamps use a noble gas (argon, neon, krypton, and xenon) or a mixture of these gases.

Which is the discharge lamp?

Electric discharge lamp, also called Vapour Lamp, lighting device consisting of a transparent container within which a gas is energized by an applied voltage and thereby made to glow. Mercury vapour in a neon lamp gives a bluish light; mercury is used also in fluorescent lamps and some ultraviolet lamps.

What are the advantages of using discharge lamps?

Less consumption of electricity: Discharge lamps consume less electricity in comparison to incandescent lamps because in later lamps to spread light continuous electric current is required while in former lamps electricity requires only to create plasma, once created it no longer needs electricity.

What are the types of high-intensity discharge lamp?

Types of High-Intensity Discharge Lamps

• Mercury vapor lamps. Mercury vapor lamps are widely used to light both indoor and outdoor areas such as gymnasiums, factories, department stores, banks, highways, parks, and sports fields.
• Metal Halide lamps.
• High-Pressure Sodium (HPS) Lamp.

What are the drawbacks of discharge lamps?

Some of the disadvantages of compact fluorescent bulbs are that they are cold temperature sensitive, not recommended for enclosed fixtures, can have a higher initial cost than incandescent, have a longer warm up time, they may have limited color temperatures, do not dim nearly as smoothly, and dimming decreases the …

What is the basic principle of gas discharge lamp?

Basic Operation Principles Essentially, the operation principal of any gas discharge lamp involves that gas atoms or molecules are transferred into excited electronic states by impinging electrons, or alternatively by energy transfers from other gas atoms, ions or molecules.

How does electrodeless discharge lamp work?

The discharge tube contains a low pressure of a rare gas such as argon and mercury vapor. As in a conventional fluorescent tube, the UV photon diffuses through the gas to the inside of the outer bulb, and is absorbed by the phosphor coating that surface, transferring its energy to the phosphor.

How do discharge lamps work?

The discharge lamps work on the fundamental principle that, light is emitted when the electrons have collided with each other. To obtain this, the first gas an ionized at very high voltage. At low pressure, gas maintained in a glass tube. Based on the properties of the gas different colors of light can be produced.