Metal Halide Lamp Construction And Working

Probe start metal halide lamps will start at an ambient temperature of 30 c 22 f or higher.

Metal halide lamp construction and working.

There is a time delay of at least two to four minutes after starting before lamps reach full light output. Ignitor a device either by itself or in association with other components that generates voltage pulses to start discharge lamps. The lamp uses mercury vapor to create the powerful light like the high pressure mercury vapor but includes other metals halide salts to improve the color. The content of video will be iti level.

The auxiliary electrode or starter electrode near the main electrodes attached to the glass stem creates initial discharge between them. Schematic diagram of a metal halide lamp is shown below. A researcher by the name of charles p. Developed in the 1960s they are similar to mercury vapor lamps but contain additional metal halide compounds in the quartz arc tube.

A halide is a chemical compound of a halogen combined with an electropositive element or in the case of lamps. How does a metal halide lamp work. Capacitor a device used in electric circuitry to temporarily store electrical charge in the form of an electrostatic field. Detailed vdo about metal halide lamps its construction working and advantages all are discussed in detail.

A halogen is a monovalent element which readily forms negative ions. A metal halide lamp is an electrical lamp that produces light by an electric arc through a gaseous mixture of vaporized mercury and metal halides compounds of metals with bromine or iodine it is a type of high intensity discharge hid gas discharge lamp. Like fluorescent lamps hid lamps produce light by the excitation of a gas confined between a pair of electrodes and require a ballast to limit current draw and to provide proper starting and operating voltages. 1 how it works.

The basic construction of the lamp is two envelopes an inner envelope arc tube which contains the arc and the outer envelope called bulb which filters out the uv and shields the inner arc tube. Metal halide high pressure sodium and mercury vapor are types of hid lamps. When full voltage is applied across the main electrodes no arc is produced at the time of switching. History of the metal halide lamp.

The basis for the metal halide lamp starts all the way back in 1912. Full light output does not occur immediately when power is applied to any metal halide lamp.