Host: The Illuminating Engineering Institute of Japan
This system is to lessen the change of color temperature when controlling incandescent lamps (including halogen lamps) for stage lighting.
When a light bulb encloses filaments of various voltages, a filament with low voltage and small power can be turned on first by dimming operation.
The second filament comes up after the color temperature of the first one reaches a specific degree.
Even if the color temperature of the second one is low, the system ensures it by impressing the voltage of the first one higher.
Example) The color temperature is kept at 3000K when the intensity is higher than 45% (lamp with 70V300W and 100V700W filaments, the rated color temperature: 3200K).
