Body Electrical System

Headlamp Description and Operation

4steps
~24min
2/5difficulty
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HIDDEN Headlamp

  1. Lamp
    1. Elements: Xenon gas: Xenon gas enables the initial reaction. Molybdenum electrode: anode arc discharge. Metal halide salts: color-forming component.
    2. Lighting Principle: When xenon gas and metal halide salt are discharged through the molybdenum anode in the capsule, it emits light.
  2. The igniter (A) is an electromagnetic transformer that receives current from the ballast and an additional voltage to start the arc light source in any environment.
  3. Ballast
    1. The ballast (A) supplies an instantaneous high-voltage pulse to the igniter electrode to initiate discharge in the source.
    2. The ballast provides stable power to the bulb and igniter during initiation and normal arc operation.
  4. BI TYPE
    1. Definition
      A. Headlamp with built-in high beam and low beam functions.
      B. Light is controlled by rotating a shield inserted in the lens (solenoid is used).
    2. Structure and Mechanism
      A. When operating as low beam: only the low beam is on, because the stopped shield blocks the light.
      B. When operating as high beam: the light is not blocked by the open shield, so the light is on in the high beam area.

Test yourself

A quick Hyundai Genesis DH quiz: every answer comes with an explanation and a link to the manual page.