Compact fluorescent lamps are a smaller version of regular fluorescent lamps. They are a compact light source with high efficacy, a wide range of colour temperatures and long life. They are available in 3 versions: either 2-pin, 4-pin or self-ballasted electronic. 2-pin models have an internal starter and are to be used with preheat, magnetic ballasts. 4-pin models, which have no internal starter, are dimmable and are to be used with electronic ballasts. Self-ballasted, electronic versions allow for easy installation in a wide variety of applications. The medium base self-ballasted versions are a very desirable alternative to the less energy efficient incandescent lamps, which they can directly replace. Considerable energy savings can be obtained from the use of compact fluorescent lamps.
Compact Fluorescent Lamp Shapes