Halogen lamp illumination
The lamp-preserving power down trick
Most commercial halogen lamps that are in labs are built such that the fan does not continue to run after the light is turned off, which can result in damage to the bulb if it the unit is turned off rapidly. To improve the lamp lifetime (aka light bulb lifetime), do not turn off a halogen lamp rapidly. Instead, turn the unit down to a very low brightness for 1-2 minutes, and then turn the unit off.
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