Monday, Jul 18, 2005 at 21:13
The reason HID is expensive is because of the following:
- expensive and difficult to manufacture the bulbs.
- there is a electonic ballast which steps the 12V to about 80V to run the lights. This ballast also has to provide a trigger pulse of about 6000V to make the gases ionise. Again costly.
The actual bulbs are now only about $100. They used to be about $600.
Have a look at video projector bulbs (HID), they still are around $600 for the bulb, they are much less common.
The price will and has come down considerably with mass production.
Example: initailly it was only on high end cars such as BMW and Mercs as an option, now they are available on the Statesmans XR6's etc.
The problem with HID is glare to other drivers. You may have to adjust headlights down to reduce glare.
The other issue is you can only have one arc per bulb. So theoretically you can only have a single beam, though they have now figured out that
moving the bulb or a shield you can simulate the high beam.
The other option is replace the bulbs in your spotties (if possible) with HIDs.
The average HID bulb in a car is 35W (~105W halogen), but they are 300% more efficient than halogen bulbs so you get lots more light. You can get 50W (~150W halogen) HID bulbs now also.
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