What is the use of ignitor in lamps?
Ignitors An ignitor is a starting device that generates voltage pulses to start a discharge lamp.
What is the purpose of ignitor in metal halide lamp?
HID lamp ignitors provide a brief, high voltage pulse to the lamp to ignite the gases inside. When accurately timed, they help the lamp start more reliably. Our selection of ignitors are designed to work with either high pressure sodium lamps or metal halide lamps that operate a wide range of wattages.
What is the function of ballast in sodium Vapour lamp?
Ballasts are needed to run high pressure discharge Lamps with their various gas fillings (mercury vapour, sodium vapour or metal halide). They stabilise the lamp current and thus lamp power. The rating of the ballast is important to ensure proper lamp operation.
Why choke is used in sodium Vapour lamp?
When electrical discharge could strike the column of the tube, lot of invisible UV radiation having wavelength dominantly at 254 nm is generated. … So in a conventional fluorescent lamp the role of the choke is to initiate the electrical discharge process.
How does a ignitor work?
When the button on a Piezo electric ignitor is pressed, a spring loaded hammer strikes quartz in order to create a spark. This is the typical process used in such lighters. This creates the necessary amount of voltage to generate a spark. … At the same time, this process creates enough energy to produce a spark.
What is the ignitor?
Definitions of ignitor. a device for lighting or igniting fuel or charges or fires. synonyms: igniter, light, lighter.
How does a metal halide ignitor work?
MH lamps start when their ballast supplies a high starting voltage higher than those normally supplied to the lamp electrodes through a gas mixture in the arc tube. The gas in the MH arc tube must be ionized before current can flow and start the lamp.
How does a metal halide lamp ignitor work?
To put it simply, metal halide technology works by passing an electrical arc through a mix of gasses, creating light. The bulb contains two primary parts: the inner arc tube and the outer bulb. When the lamp is inactive, the mercury and metal halide salts are condensed inside the inner arc tube.
What is a ballast Ignitor?
“Ballasts provide system stability by limiting the current that can be drawn.” Ignitors: “Ignitors provide a brief, high voltage pulse or pulse train to breakdown the gas between the electrodes of an arc lamp. In really basic terms, the ignitors tell the light bulb to wake up and the ballasts keep the bulbs happy.
Which ballast is used in sodium lamp?
Operation. The inductive ballast is made up of a coiled wire. The coil creates a magnetic field inside when a current is applied. It stores the energy of the current in the magnetic field it creates.