parts of fluorescent lamp and its function
The starter was meant to delay electricity coming into the gas-filled tube.Jae Chapman is a sustainability enthusiast who has been writing since 2006.
More and more, compact fluorescent lights are replacing incandescent lights in our homes. Power dissipated due to cathode fall voltage does not contribute to light output. This technique has become popular among aquatic gardeners as a cost-effective way to add more light to their aquariums.
Very good suppression is possible, but adds to the cost of the fluorescent fixtures. Fluorescent lamps near end of life can present a serious radio frequency interference hazard. They were used in fixtures manufactured by three leading corporations, The fundamental mechanism for conversion of electrical energy to light is emission of a Electric current flows through the tube in a low-pressure The fill gas helps determine the electrical characteristics of the lamp, but does not give off light itself. Overdriving a fluorescent lamp is a method of getting more light from each tube than is obtained under rated conditions. Before the 1960s, four-pin thermal starters and manual switches were used.With glow switch starters a failing tube will cycle repeatedly. Some of the least pleasant light comes from tubes containing the older, halophosphate-type Since the 1990s, higher-quality fluorescent lamps use either a higher-CRI halophosphate coating, or a In US residences, fluorescent lamps are mostly found in In other countries, residential use of fluorescent lighting varies depending on the price of energy, financial and environmental concerns of the local population, and acceptability of the light output. What is the parts of fluorescent lamp and there functions?
Tubes need to be mounted near an earthed metal reflector in order for them to strike. Ballast regulates current flow 2.
The localized depletion of mercury vapor pressure manifests as pink luminescence of the base gas in the vicinity of one of the electrodes, and the operating lifetime of the lamp may be dramatically shortened. Quick-start ballasts are more common in commercial installations because of lower maintenance costs. To change the kind of ballast, for instance if you prefer less humming noise, you must replace the entire fixture.Fixtures can be utilitarian or decorative, but the purpose of the fixture is to provide safe housing for the tube and ballast. The ultraviolet range isn't visible to human eyes, but these ultraviolet photons strike the phosphor coating and cause it to light up.Straight fluorescent lights have two sets of electrodes (one at each end of a tube) that connect to the fixture via two small metal prongs, which are visible outside the tube.
Hunker may earn compensation through affiliate links in this story. In "neon lights," the tubes are bent to form graphics or words.The inside of the tube is coated with a phosphor material. Traditional fluorescent lights have tubes shaped into straight cylinders. The High CCT lighting generally requires higher light levels.
Of particular importance was the mercury vapor lamp invented by Küch and Retschinsky in The next step in gas-based lighting took advantage of the luminescent qualities of The development of the neon light also was significant for the last key element of the fluorescent lamp, its fluorescent coating.All the major features of fluorescent lighting were in place at the end of the 1920s. Given the higher tube voltage required anyway, these tubes can easily be made long, and even run as series strings. Under standard test conditions fluorescent lamps last 6,000 to 80,000 hours (2 to 27 years at 8 hours per day).The higher initial cost of a fluorescent lamp compared with an incandescent lamp is usually compensated for by lower energy consumption over its life.Compared with an incandescent lamp, a fluorescent tube is a more diffuse and physically larger light source. This is due to instability in the negative resistance of arc discharge,New fluorescent lamps may show a twisting spiral pattern of light in a part of the lamp. They are better suited for bending into special shapes for lettering and signage, and can also be instantly switched on or off.
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