pincher
Member Since: 25 Mar 2016
Location: market harborough
Posts: 13
  
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why do the xenon headlights start very bright when you turn them on and then immediately go dimmer
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 2nd Feb 2020 5:05 pm |
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Kilovolt
Member Since: 29 Jun 2015
Location: South Derbyshire
Posts: 1020
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I suspect it is because as the gas 'ignites', you get a burst of light which then settles to its rated output.
What do I know 
How do xenon headlights work?
Xenon is the name of the gas used in the headlights. Electricity is passed through the gas, which produces a beam of light. This process is known as high-intensity discharge (HID). With no filament to burn out, bulbs can sometimes last for the lifetime of the car, and they also use less energy than a halogen bulb, which plays a small part in reducing fuel consumption. "Track day running - Don't put your foot back on the accelerator until your absolutely sure you don't have to take it off again"
Current Ride: D4 XS Commercial Baltic Blue SDV6 fully loaded with heated everything 
Track Days: BMW E36 M3 Evolution MY 1996 (3.2 Litre 377 BHP sat in 1,250 Kgs of car, with a pro safety cage and some serious braking power)
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| 2nd Feb 2020 5:09 pm |
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