dimmer
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Article
18 sectionsContents
- History
- Types of dimmer
- Rheostat dimmer
- Salt water dimmer
- Coil-rotation transformer
- Autotransformer dimmer
- Solid-state dimmer<span class="anchor" id="Semiconductor dimmer"></span>
- Control
- Patching
- Hard patch
- Soft patch
- Dimming curves
- Preheat
- Digital
- Rise time
- See also
- References
- External links
thumb|A common dual dimmer module used in stage lighting thumb|A dimmer
A dimmer is a device connected to a light fixture and used to lower the brightness of the light. By changing the voltage waveform applied to the lamp, it is possible to lower the intensity of the light output. Although variable-voltage devices are used for various purposes, the term dimmer is generally reserved for those intended to control light output from resistive incandescent, halogen, and (more recently) compact fluorescent lamps (CFLs) and light-emitting diodes (LEDs). More specialized equipment is needed to dim fluorescent, mercury-vapor, solid-state, and other arc lighting.