![]() Color in lighting is described in Kelvin, or temperature of light. By purchasing a set of bulbs constructed at the highest quality, you will achieve better alignment, which allows for a tighter beam pattern, reducing hotspots and produce a cleaner output. Diode Dynamics HID Bulbs are individually laser-aligned as part of the manufacturing quality control process, and use a ceramic base to ensure perfect alignment. It is important to make sure you purchase a bulb that is supported at the base by either a ceramic piece or metal frame, not simply a plastic piece, which can warp due to heat over time and create a misalignment. If the capsule is even slightly tilted, the output will be affected. In addition to the fitment of the base of the bulb, it is also extremely important for the glass tube of the bulb, which contains the light source, to be aligned correctly, fully straight on the base. If the bulb is not fully seated in the back of your projector, the reflectivity of the headlight will be off, and the output will suffer.Īlignment. The distance of the arc-capsule in the bulb relative to the bulb base is extremely important. ![]() This goes for any application, whether you’re upgrading your factory halogen headlights with the HID Conversion Kit, or replacing your OEM HIDs. ![]() If the bulb does not fit properly in the housing, the light output will be compromised. Diode Dynamics maintains vehicle-specific listings to assist in this process. In purchasing HIDs, it is crucial to select the required size for your application. HID bulbs are rebased to halogen-size bulb mounts, for retrofit application in halogen headlight assemblies. In AC, the heat is shared between two electrodes, significantly increasing the life of the bulb and overall performance. ![]() All OEM HIDs use AC, and Diode Dynamics only provides AC components. You might see some HID conversion kits available in DC configuration, but they are unreliable compared to the far-superior alternating current (AC) HID systems. Over time, this erodes the electrode, resulting in short bulb life. The first HID bulbs operated on a direct current (DC), but in DC, one electrode is constantly being hit with high speed ions, since the power flows in only one direction. Halogen bulbs usually burn out after about 400 hours, while HID bulbs can last for 2500 hours or more. The ballast then continues to supply stable electrical power to the bulb, to provide steady, bright light. After the bulb is fully “warmed up,” the arc has attained stability, and the luminous efficacy has attained its nominal working value. The electronic ballast, which controls the power supply, senses the drop in resistance and adjusts to provide a continuous current to the bulb. As the bulb warms up, the salts continue to vaporize, further lowering resistance between the electrodes. Electrical resistance is reduced within the tube, and the current flows between electrodes. To start the bulb, an ignitor provides a high-voltage pulse to the bulb, which creates a spark, ionizing xenon gas in the bulb, creating a conducting tunnel between the tungsten electrodes at the top and bottom of the glass tube. The light itself comes from an arc of electricity, facilitated by metallic salts that are vaporized within the arc chamber. High-intensity discharge (HID) headlamps produce light with an electric arc rather than a glowing filament as you might find in a standard halogen bulb.
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