Lighting products

Lighting products

Industry: Lights & lighting

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Lighting products

Input voltage

Lights & lighting; Lighting products

Power supply voltage required for proper operation of fluorescent or HID ballast.

The total power input to the ballast which includes lamp watts and ballast losses. The total power input to the fixture is the input watts to the ballast or ballasts and is the value to be used when ...

Instant start

Lights & lighting; Lighting products

Lamp starting method in which lamps are started by high voltage input with no preheating of lamp filaments. Some rapid start lamps are designed so that they may be instant started. (See RAPID START).

Instant start lamp

Lights & lighting; Lighting products

A fluorescent lamp, usually with a single pin at each end, approved to operate on instant start ballasts. The lamp is ignited by a high voltage without any filament heating.

Integral

Lights & lighting; Lighting products

A popular term for a compact fluorescent lamp which includes a built-in ballast (See CFL).

Inverse square law

Lights & lighting; Lighting products

Formula stating that if you double the distance from the light source, the light level goes down by a factor of 4, if you triple the distance, it goes down by a factor of 9, and so on.