Headlamp: Description and Operation

HID HEAD LAMP

BULB

1. Elements
Xenon gas: Xenon gas activates the initial reaction for rapid illuminating.
Molybdenum electrode: anode arcing
Metal halide salts: color composing component

2. Lightening principle
When Xenon gas and metal halide salt will discharge the molybdenum anode in a capsule, it emits light.

IGNITOR

Ignitor is an electromagnetic transformer that receives current from ballast and boost voltage to light on the arc light source in any environment.

BALLAST

1. Ballast delivers an instant high voltage pulse to the ignitor electrode, to initialize discharge in the source.




2. Ballast supplies the stable power to the bulb and the ignitor during initialization and normal state of arc.

CHARACTERISTIC

1. Durable for vibration as there is no filament.
2. HID lamp had a more long life than halogen lamp.
3. Does not operate if polarity is changed.
4. Operating input voltage : 9 - 16 V