High Pressure Sodium Vapour Lamp Ignitor

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High pressure sodium vapour lamp ignitor.

Low pressure and high pressure low pressure sodium lamps are highly efficient electrical light sources but their yellow light restricts applications to outdoor lighting such as street lamps where they are widely used. They are also commonly found in an indoor garden setting. Only high pressure sodium and pulse start metal halide fixtures have ignitors. High pressure sodium lights are used for illuminating large outdoor areas.

They emit bright yellow light. Typically these lights are used on sides of industrial buildings and in some street lamps. Neither mercury vapor nor standard metal halide fixtures need ignitors to strike an arc through the lamp. A sodium vapor lamp is a gas discharge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm.

This pulse starts an arc through the xenon gas. The heavy duty transformer or ballast is also long lived if the bulbs are changed out before they burn out. High pressure sodium lamp hps lamp. There is an ignitor built into the ballast which sends a pulse of high voltage energy through the arc tube.

An ignitor is used when high pressure is necessary to strike an arc through certain materials and get the temperature up very quickly inside it. The lamp turns sky blue as the xenon lights. A high pressure sodium ballast is responsible for regulating the pressure in light fixtures that use high pressure sodium gas to produce the light. They are used for things such as security lighting.

The sodium vapor strikes an arc over 240 c. Sodium bulbs can last up to 20 000 hours. Two varieties of such lamps exist.