Metal Halide Lamp Construction And Working

A halide is a chemical compound of a halogen combined with an electropositive element or in the case of lamps.

Metal halide lamp construction and working.

Full light output does not occur immediately when power is applied to any metal halide lamp. A researcher by the name of charles p. Metal halide high pressure sodium and mercury vapor are types of hid lamps. The auxiliary electrode or starter electrode near the main electrodes attached to the glass stem creates initial discharge between them.

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. How does a metal halide lamp work. History of the metal halide lamp. When full voltage is applied across the main electrodes no arc is produced at the time of switching.

The content of video will be iti level. Probe start metal halide lamps will start at an ambient temperature of 30 c 22 f or higher. 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. Developed in the 1960s they are similar to mercury vapor lamps but contain additional metal halide compounds in the quartz arc tube.

A halogen is a monovalent element which readily forms negative ions. Schematic diagram of a metal halide lamp is shown below. 1 how it works. There is a time delay of at least two to four minutes after starting before lamps reach full light output.

The basis for the metal halide lamp starts all the way back in 1912. Ignitor a device either by itself or in association with other components that generates voltage pulses to start discharge lamps. Steinmetz was the first person to take a mercury vapor lamp and use halide salts in an attempt to produce a better light color. Detailed vdo about metal halide lamps its construction working and advantages all are discussed in detail.

This group includes the mercury vapor high pressure sodium and metal halide lamps. Metal halide lamps belong to a family of high intensity discharge hid lamps that includes mercury vapor and sodium vapor lamps.