The emergence of electric lights has greatly improved our lives, and with the advancement of technology, a variety of electric lights, fluorescent lamps are one of them. In life, we only know that we use fluorescent lamps, and we do not know anything about the principle of fluorescent lamps. Followed by the members to introduce the principle of fluorescent, incandescent and fluorescent difference between what? First, the principle of fluorescent lamp 1, working principle The main components of the fluorescent lamp are the ballast and the starter. The ballast is a coil with a core, which has a large self-inductance coefficient, and the starter is mainly a small helium filled with helium, which is equipped with two One electrode, one is a static contact piece, and the other is a U-shaped moving contact piece made of two metals having different expansion coefficients. After we close the switch of the fluorescent lamp, the power supply voltage is applied between the two poles of the starter to discharge the xenon gas to emit glow. The heat generated by the glow causes the U-shaped moving contact piece to expand and expand, and then touches the static contact. The chip is turned on, and the filaments in the ballast coil and the lamp have current flowing therethrough. After the circuit is turned on, the helium in the starter stops discharging, the U-shaped piece cools and contracts, and the two contacts are separated. At this time, the circuit is automatically disconnected, the current of the ballast is drastically reduced, and then the high is generated. The self-induced electromotive force, the two self-induced electromotive forces and the power supply voltage are added together in the same direction to form an instantaneous high voltage, the gas in the lamp begins to discharge, and then the fluorescent lamp begins to emit light. 2, the principle of light The fluorescent lamp we saw was illuminated because of the presence of mercury vapor and a small amount of inert gas inside the tube, as well as phosphor on the tube wall. When the electrons are excited, the atoms emit visible light. Most of the photons emitted by the mercury atoms are in the ultraviolet region. These high-energy photons (ultraviolet rays) produce white light between the collision with the phosphor. Second, the difference between fluorescent lamps and incandescent lamps 1, the light source The light of an incandescent lamp is full-color light, and the general fluorescent lamp is monochromatic. Look at other colors under the monochromatic daylight, and the color will be discolored if it is not true. 2, the working principle The fluorescent tube is a mercury atom that is lit by the lamp, and the ultraviolet light is emitted by the process of gas discharge (the main wavelength is 2537 angstroms = 2537 × 10-10 m). About 60 of the energy consumed can be converted to ultraviolet light, and the other energy is converted into heat. 3, luminous efficiency The luminous efficiency of ordinary incandescent lamps is 7 to 19 lm/W, and the fluorescent lamps can reach 27 to 67 lm/W. 4, the service life The life of an ordinary incandescent lamp is 1000 hours, and the fluorescent lamp can be used for 1500 to 5000 hours (but the frequent start has a great influence on the life of the fluorescent lamp). The above is about the principle of the fluorescent lamp principle, I hope to be helpful to everyone! Qi installed network, China's well-known large-scale decoration platform, decoration leading brand. If you want to make a new design, you are advised to apply for the free design service of the net , and help you plan a reasonable space layout and beautiful design through the professional designer's on-site measurement room. >>Click here to get a professional designer free room design Disclaimer: We have used all means to find the source of the picture or content. We have not found the relevant right holder. Please ignore the negligence. If the relevant rights holders see it, please contact us in time. We will delete and proceed as soon as possible. Handle it properly.
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