How to Avoid Color Temperature Changes When Dimming?

2 Minute Read
A close-up of an incandescent bulb transitioning from bright white to a warm yellowish glow due to dimming, illustrating the impact of voltage reduction on filament temperature

The main reason for color temperature changes lies in the physical properties of these lamps

Filament Properties

In incandescent and halogen lamps, light is generated by heating the filament until it starts to glow. The color of this glow is directly related to the filament’s temperature.

Voltage-Dependent Light Emission

When dimming these lamps, you are effectively reducing the voltage supplied to them. This lowers the filament temperature, causing the light to shift towards warmer (yellowish) tones.

Traditional Dimming Limitations

Conventional dimming methods simply reduce the power delivered to the lamp, which inevitably leads to this color shift.

Solution

To maintain a stable color temperature, it is recommended to use specialized stage dimmers that support high-frequency phase dimming, such as:

Efficient DMX Signal Management

Splitting and amplifying the DMX signal is key to stable stage lighting performance. Read our article on DMX splitters to prevent flickering and signal loss in incandescent and other lighting fixtures.

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