Incandescent Bulbs
Standard incandescent light bulbs produce light by passing an electric current
through a filiment in a vacuum or gas-filled bulb. Incandescent light bulbs have low initial
cost, good color rendition and excellent optical control.
Topics:
Basic Information
Filaments
Diagram
Bulb Types
Bases
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Halogen Lamps
Halogen light bulbs also use a filament; but because it is sealed in a pressurized
capsule containing halogen gas, the lamp provides brighter, whiter light,
longer service life and improved energy efficiency.
Topics:
Halogen Cycle
Diagram
Halogen vs. Standard
Bulb Types
Bases
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Compact Fluorescent
Compact Fluoresent Lamps operate in the same way as larger fluoresent tubes. Some compact fluoresent lamps
feature integral ballasts, which make it possible to use these products as direct replacements for
inefficient incandesent light bulbs.
Topics:
Basic Information
Fluorescent Diagram
Phosphor Diagram
Bulb Types
Bases
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Fluorescent Tubes
In a fluorescent lamp, an electric arc passing between cathodes in a tube
excites mercury vapor and other gases and produces UV radiant energy. A
phosphor coating on the tube then converts this energy to visible light.
Fluorescent lamps are very efficient and provide a wide range of color
temperatures. Ballasts must be used to operate fluoresent tubes.
Topics:
Basic Information
Fluorescent Diagram
Phosphor Diagram
Bulb Types
Bases
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Ballasts
The electronic arc in any fluorescent system is generated by a ballast. The
ballast starts the lamp, then limits its operating current and provides power
factor correction. Modern electronic ballasts perform these functions with
great efficiency and provide other control functions as well.
Topics:
Basic Information
Ballast Types
Wiring Diagrams
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High Intensity Discharge
In HID lamps, an arc passing between two cathodes in a pressurized tube causes
various metallic additives to vaporize and release a large amount of light. All
HID lamps offer outstanding energy efficiency and service life. Metal halide
lamps also offer good to excellent CRI.
Topics:
Basic Information
Diagram
BulbTypes
Bases
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LED Exit Lamps
LED retrofit kits turn inefficient, high maintenance incandescent exit signs
into energy efficient, zero maintenance, long lasting LED signs.
Basic Information
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