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==Uses other than illumination==
Lamps can be used as heat sources
Filament lamps have long been used as fast acting [[thermistor]]s in electronic circuits. The filaments are most likely made out of tungsten. Popular uses have included:
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[[Category:Lighting]]
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Revision as of 08:58, 26 February 2015
A lamp is a replaceable component such as an incandescent light bulb, which is designed to produce light from electricity.[1] These components usually have a base of ceramic, metal, glass or plastic, which makes an electrical connection in the socket of a light fixture. This connection 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:
- Incandescent lamp, a heated filament inside a glass envelope
- Halogen lamps use a fused quartz envelope, filled with halogen gas
- LED lamp, a solid-state lamp that uses light-emitting diodes (LEDs) as the source of light
- Laser diode lamp
- Arc lamp
- Xenon arc lamp
- Mercury-xenon arc lamp
- Ultra-high-performance lamp, an ultra-high-pressure mercury-vapor arc lamp for use in projectors
- Metal-halide lamp
- Gas-discharge lamp, a light source that generates light by sending an electrical discharge through an ionized gas
- Fluorescent lamp
- Compact fluorescent lamp, a fluorescent lamp designed to replace an incandescent lamp
- Neon lamp
- Mercury-vapor lamp
- Sodium-vapor lamp
- Sulfur lamp
- Electrodeless lamp, a gas discharge lamp in which the power is transferred from outside the bulb to inside via electromagnetic fields
- Fluorescent 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:
- Stabilisation of sine wave oscillators
- Protection of tweeters
- Automatic volume control in telephones
Lamp circuit symbols
In circuit diagrams lamps usually are shown as symbols. There are two main types of symbols, these are: