Light Bulbs and Tubes

Light Bulbs and Tubes

Tungsten bulb, also called filament bulb, incandescent bulb. The thin metal filament within the bulb is heated by the current and glows brightly. Tungsten bulb for general lighting service is pear-shaped, clear or pearl with a Bayonet cap and a range of outputs from 8 to 150w. All incandescent bulbs will be banned by 2012.

Architectural tube, another name is strip light. This is an inexpensive alternative to the fluorescent tube for attaching to the furniture and for picture lighting, but not where heat can be a problem.

Florescent tube. The particles which coat the inside of the tube glow brightly (fluoresce) when the current is switched on.

Energy-saving bulb is expensive, but they are cheaper in the long run. These bulbs last 5 times longer than an ordinary tungsten bulb, and only 1/4 of the electricity is required.

Bulb caps

Bayonet cap is the standard U.K. cap for Tungsten lamps. Pushed in the holder and then turned.

Edison screw is the standard U.S. and Continental cap for Tungsten lamps. Screwed in the holder.

Bi-pin cap is the standard cap for Fluorescent lamps. Pushed in the holder.

Double cap is a fitting for Architectural tubes. Pushed into holder.

Peg cap is a fitting for Architectural tubes. Pushed in to holder.