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Lamp (electrical component)

"Electric lamp" and "Light bulb" redirect here. For the item of furniture, see light fixture. For the music by Fujiya & Miyagi, see Lightbulbs (album).
File:Lelightbulbs.jpg
Various compact fluorescent (CFL) lightbulbs
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A clear glass 60 W Neolux light bulb

A lamp is a replaceable component that produces light from electricity.[1] Compact lamps are commonly called light bulbs, for example the incandescent light bulb. Lamps usually have a base made of ceramic, metal, glass or plastic, which secures the lamp in the socket of a light fixture. The electrical connection to the socket may be made with a screw-thread base, two metal pins, two metal caps or a bayonet cap.

Types

There are several types of lamp:

Uses other than illumination

Lamps can be used as heat sources, for example in incubators and toys such as the Easy-Bake Oven.

Filament lamps have long been used as fast acting thermistors in electronic circuits. The filaments are most likely made out of tungsten. Popular uses have included:

Lamp circuit symbols

In circuit diagrams lamps usually are shown as symbols. There are two main types of symbols, these are:

The cross in a circle, which usually represents a lamp as an indicator. 
The semicircular dent in a circle, which usually represents a lamp as a source of light or illumination. 
Another Electronic symbol for Lamp 

See also

References

  1. ^ "Lamp". Dictionary.com. Retrieved Nov 9, 2014.