construction and working of cfl lamp

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How works Electromechanical Relay? Total set up of a lamp requires two bases and choke coil with a starter. A fluorescent lamp has changed over electrical energy into useful light energy to a great deal more proficiently than incandescent lamps.The normal luminous viability of fluorescent lighting frameworks is 50 to100 lumens per watt, which is a few times the adequacy of incandescent lamps with equivalent light yield.. How does a Fluorescent Lamp work? The filament is dipped in a mixture of barium, strontium and calcium carbonate. What is Regulator? Fluorescent Lamp Circuit Working Explanation, Mosquito Killer Bat Circuit Working Explanation, PAM8403 - GF1002 3W Stereo Audio Amplifier Module, Electronics : Definition and Its Importance. The basic construction of a CFL consists a tube which is curved/spiraled to fit into the space of an incandescent bulb, and a compact electronic ballast in the base of t… Differential Relay- Working, Classification, Advantages. The pressure inside the lamp is around 0.3% of environmental pressure. So the internal ballast circuit is also different. The CFL produces electronic interference to the electronic equipments. Phosphor coating is used on inner wall of the bulb tube. No other element has proved as efficient in this process, so even though the amounts of mercury used in bulbs has decreased over time, a small amount of mercury is still required for CFLs … The CFL bulbs present in the market have different wattage such as 5W, 9W, 11W, 15W, 20W, 25W, 30W, etc. Once the CFL bulb glows the voltage across it decreases to 230V and the ballast circuit allows to flow a low current to the tube. Compact Fluorescent Light (CFL) Bulb. If you have any doubts or questions, Please let me know. Construction, Types, Applications, Transmission and Distribution of Electric Energy. The electrode mount assembly is almost similar to the stem press unit in the incandescent lamps. At the starting time, the voltage across the CFL tube is 1000V. The lamp’s anodes are normally made of snaked tungsten and typically alluded to as cathodes due to their prime capacity of discharging electrons. The working principle of CFL bulb ballast circuit is explained in detail here. The energy consumed by CFL lamp is only 1/4 that of other lamp. On the other hand, Compact Fluorescent Light (CFL) bulbs pose a marginally smaller risk of fire and are more efficient and long-lasting than both incandescent and halogen bulbs. In this website you will find information related to Electrical engineering, Current & Voltage. Though initial cost of CFL is high, considering its long life minimum maintenance, low power and less running cost makes the CFL more economical. When stimulated by electric current, mercury vapor inside a CFL produces ultraviolet light, which is re-radiated as visible light when it strikes the fluorescent compound, known as phosphor, painted on the inside of the bulb. Fluorescent lamp tubes are normally straight and long. This electrode mounting assembly is almost similar to the stem press unit in the incandescent lamps. Total set up of a lamp requires two bases and choke coil with a starter. The life of CFL is 10,000 to 30,000 working hours. A fluorescent lamp tube is loaded with a gas containing low-pressure mercury vapor and argon. Distance relay Relay  is an electrical switch which is used to open or close a circuit with electromagnetic relay or electronically.... Over Current Relay This is another type of relay which is used to protect the transmission lines from faults. The electrode is similar to the incandescent lamp filament. Small plates are attached to the filament to protect the electron bombardment and reduce the wattage loss at both ends. The lamps use a tube which is curved or folded to fit into the space of an incandescent bulb, and a compact electronic ballast in the base of the lamp. It is baked during manufacturing to become oxides and thus it becomes capable of providing abundance of free electrons easily. CFL is a lamp or a light which means Compact Fluorescent Lamp. Bigger U-shaped lamps are utilized to give the same measure of light in a smaller region. When this high-frequency electricity is passed through a filament (usually made of tungsten) of electrodes, temperature becomes about 900º C. A beam of electrons generates which is further accelerated by the potential difference between electrodes. Lumens output is high. Construction, Working Prin... What Is Relay Protection? It is also known as compact fluorescent light, energy-saving light, and compact fluorescent tube. CFL is not instant start lamp, it requires 3 to 5 min to give full light output. It prot... BUCHHOLZ RELAY Buchholz relay is a protection device used to detect transformer faults in oil filled transformers. The CFL was initially designed to replace the incandescent lamp in terms of its compactness as well as energy efficiency. Compact Fluorescent Lamp Working Principle The electrons that are bound to mercury atoms are excited to states where they will radiate ultraviolet light as they return to a lower energy level. The length of the commonly used lamp is around 100 millimeters (3.9 in). In this socket it is energy saving providing better life and low maintenance. Differential Relay Differential relay operates when the phase difference in two or more than two identical quantities crosses the pr... Electromechanical Relays These relays are constructed with electrical, magnetic & mechanical components & have an  operat... Fluorescent Lamp- Its Working, Construction. At a certain pressure argon gas is filled up inside the tube. What is AC Servomotor? The CFL Bulbs consist of a switched-mode converter (Electronic Ballast) that functions on a very high frequency and acts as a replacement of the Electrical Choke, and Starter assembly. Total set up of a lamp requires two bases and electromagnetic ballast or choke coil with a starter. The filaments of electrodes play both roles as anode and cathode. The filaments play both roles as anode and cathode. The electrode mount assembly is almost similar to the stem press unit in the incandescent lamps. Generally, all the CFL bulb ballasts follows that. A CFL uses a vacuum glass tube which is very similar to the strip lamps (commonly known as. It is advanced lamp than incandescent and fluorescent lamps. Construction, Operation,... Field-Effect Transistor- Symbol, Types, Classifica... What is Voltage Regulator? To complete this entire process typically takes 30 seconds to 3 minutes. The circuit board of a CFL bulb ballast circuit is a combination of four different circuits. Differential Relay- Working, Classification, Advan... Over Current Relay- Working Principle, Types, Draw... What is Buchholz Relay? Working, Construction, Advantages, Applications, Air Circuit Breaker- Working Principle, Construction, Types, Advantages, Applications, What is Buchholz Relay? It's Types, Application... What is Regulator? This CFL lamp is excellent because it can not be replaced by inefficient incandescent lamp. Incandescent lamps replacing with CFLs result in cost-efficient in terms of electricity bills that together with its long life offset the higher purchase price of the lamp. The figure of an electrode is shown below. A few lamps have the tube twisted into a circle, utilized for table lamps or different spots where a more conservative light source is required. Below is shown the circuit diagram of some CFL ballast boards. So it gives more lumens. AC Servomotor- Construction, Working Principle, Applications. The CFL has high quality, cool, bright white light. The lumens output high as compare to the wattage. A compact fluorescent lamp (CFL), also called compact fluorescent light, energy-saving light and compact fluorescent tube, is a fluorescent lamp designed to replace an incandescent light bulb; some types fit into light fixtures designed for incandescent bulbs. It is suitable if running time is greater  than the 5 mins. The fuse is usually an elect... • A  Circuit Breaker  in which SF6 gas under pressure is used to extinguish the arc is so it is called SF6 circuit breaker. The power rating of CFL lamps is 1/4 than the other lamps. This coating is made of shifting mixes of metallic and uncommon earth phosphor salts. And it is available in different shapes. Minimal fluorescent lamps have a few little width tubes joined in a heap of two, four, or six or a little breadth tube curled into a helix, to give a high measure of light yield in little volume. Working, Types, Applications, What is SF6 Circuit Breaker? The choke increases the voltage level up to 1000V. Electric Fuse and Why are Fuses used? The CFL and ballast combination can save money because the ballast has much longer life of 50000 working hours, and the CFL tube has a life of 10000 working hours so if CFL tube fails only tube can be replaced and expensive electronic ballast used. When high voltage is applied across the two electrodes by using ballast, an arc is produced through the argon gas. One of the biggest advantages of a CFL Bulb is its low energy consumption, which also produces less heat, has a much higher lifetime compared to incandescent or halogen lamps, and produces pleasant light. Many manufacturing companies make CFL bulbs, and their circuit diagrams of electronic ballast also different. Need and Types of Rectifier. How works Electromechanical Relay? Working, Advantages, Applications. CFL lamps are compact in  size. For this, they are coated with a blend of barium, strontium, and calcium oxides to have a low thermionic emission temperature. Generally, small plates are attached to the filament to protect it from electron bombardment and to reduce the wattage loss at both ends. Liquid mercury is provided inside the lamp bulb. How Distance Relay Works?- Operation, Types, Advantages, Limitations. This emitted ultraviolet light is converted into visible light as it strikes the fluorescent coating as well as into heat when absorbed by other materials. Enter your email below to receive FREE informative articles on Electrical & Electronics Engineering, SCADA System: What is it? To construct a fluorescent tube light a lime glass tube, drop of mercury, argon gas, phosphor coating and the electrodes with their mount assemblies are required. The electrode mount assemblies are at both the ends of lamp tube. Over Current Relay- Working Principle, Types, Drawbacks. When high voltage is applied across the two electrodes by using ballast, an arc is produced through the argon gas. The basic construction of a compact fluorescent lamp (CFL) consists of a fluorescent glass tube that is curved or spiraled, and a compact electronic ballast in the base of the lamp. The white phosphor coating an inner surface of the tube gets excited and gives out visible light from the surface of the tube. The gas discharge excites mercury vapours and produces ultraviolet light. As compared to incandescent lamps, the little heat produced in a fluorescent lamp is just a byproduct, and most of the energy is converted into visible light. The CFL works similar to standard fluorescent lamp. Once the lamp starts operating, a much lower voltage can be maintained the current and light output. A polarized capacitor is connected in parallel for filtering purposes of impure DC coming from the rectifier circuit. So energy bill is reduced to 1/4. But, do you know. Then the UV light hits the phosphor coating on the inside of the fluorescent tube, it is to convert UV light into visible light, the whole process is done in a sealed vacuum tube.

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