With the development of the power and metal stream, which could be with power bulb, that is called gas-discharge source, fluorescent lamps are the most wide light besides the incandescent lamp. According to the cathode type, they are hot cathode and cold cathode.
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fluorescent lamps include the gas anti radiation and fluorescent powder. various lamps, That is, by the ultraviolet radiation produced by low pressure mercury vapor discharge, the fluorescent powder coated in the inner wall of the tube is converted into visible light. Due to the negative resistance characteristics of gas discharge, the fluorescent lamp must be in the circuit conjunction a ballast, limiting the lamp current and auxiliary lamp start. Compact fluorescent lamps, small size, high efficiency, long life, single ended power supply, easy to decorate, it is used to replace the 150W following incandescent lamp.
Fluorescent lamps could be proper for the low power, which could be with high privacy, the fluorescent lamps could be bright, which could be used for hospital, school, office room and designer room.
U type fluorescent lamps could focus the light, the light is steady, which could be used for civil buildings and home lighting.
Energy saving fluorescent lamps could be very popular with the last century, the light could be equipped with fluorescent powder and incandescent lamp, which is with high effective and long life, that could be equipped with different kinds of lights, which could be made stunning table lamps, wall sconces and ceiling lights, that could be used for hospital, office room and hotel.