Lighting products

Lighting products

Industry: Lights & lighting

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Lighting products

Parallel lamp operation

Lights & lighting; Lighting products

Refers to ballasts that employ multiple output current paths from a single ballast to allow lamps to operate independent of one another, allowing other lamps operated by the ballast to remain lit ...

Polychlorinated biphenyls (PCB)

Lights & lighting; Lighting products

Chemical pollutant formerly used in ballast capacitors that were part of ballasts. It is now illegal to use PCB's and most such ballasts have been replaced over time.

Phosphor

Lights & lighting; Lighting products

An inorganic chemical compound processed into a powder and deposited on the inner glass surface of fluorescent tubes and some mercury and metal-halide lamp bulbs. Phosphors are designed to absorb ...

Photopic

Lights & lighting; Lighting products

Vision for which the cones in the eye are responsible; typically at high brightness and in the foveal or central region (See SCOTOPIC, FOVEA, FOVEAL VISON).

Potting

Lights & lighting; Lighting products

Material used to completely surround and cover components of some magnetic and electronic ballasts. Potting compound fulfils functions of protecting components, dampening sound, and dissipating heat.

Power factor

Lights & lighting; Lighting products

Measurement of the relationship between the AC source voltage and current. High power factor ballasts require less AC operating current at the same wattage than an equivalent low power factor ...