About What is the normal voltage of the fluorescent tube bracket
The fundamental mechanism for the conversion of electrical energy to light is the emission of awhen an electron in a mercury atom falls from an excited state into a lower . Electrons flowing in the arc collide with the mercury atoms. If the incident electron has enough , it transfers energy to the atom's outer electron, causing that electron to tempora. "Fluorescent tubes and electroluminescent panels typically require 200 to 600 V for starting and running illumination." 200–600 V A fluorescent light is a type of gas discharge tube, which contains an inert gas (such as argon, neon, or krypton) and mercury vapor.
"Fluorescent tubes and electroluminescent panels typically require 200 to 600 V for starting and running illumination." 200–600 V A fluorescent light is a type of gas discharge tube, which contains an inert gas (such as argon, neon, or krypton) and mercury vapor.
Fluorescent lamps use a ballast which transforms line voltage to a voltage to start up and operate the lamp(s). Newer fluorescent ballasts are usually rated for both 120 volts and 277 volts. Some are rated for only 120 volts, others for only 277 volts (used in commercial environments).
A fluorescent tube needs a high voltage to strike the arc inside, then it becomes close to a short circuit. Once the arc is established, the ballast becomes a current limiter. How much current depends on the tube.
The voltage waveform across the ballast is essentially the difference between the applied mains voltage and that across the tube. For 120V operation, the voltage is obviously less, but the tube still needs somewhere between 300-400V to strike (or re-strike) the arc, so the ballast has to be able to make up the difference with a flyback pulse at .
Fluorescent lamp tubes are often straight and range in length from about 100 millimeters (3.9 in) for miniature lamps, to 2.43 meters (8.0 ft) for high-output lamps. Some lamps have a circular tube, used for table lamps or other places where a more compact light source is desired.
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6 FAQs about [What is the normal voltage of the fluorescent tube bracket ]
Is it normal for a fluorescent tube to have a high voltage?
That's actually pretty normal. Some ballasts are even higher. A fluorescent tube needs a high voltage to strike the arc inside, then it becomes close to a short circuit. Once the arc is established, the ballast becomes a current limiter. How much current depends on the tube.
How many volts does a fluorescent tube need?
When power is first applied, a high voltage (several hundred volts) is needed to initiate the discharge. However, once this takes place, a much lower voltage - usually under 100 V for tubes under 30 watts, 100 to 175 volts for 30 watts or more - is needed to maintain it." Fluorescent Tube and Switching Ballasts. Transtronic. 1994-2001.
How many lumens does a fluorescent tube use?
The efficacy of fluorescent tubes ranges from about 16 lumens per watt for a 4 watt tube with an ordinary ballast to over 100 lumens per watt with a modern electronic ballast, commonly averaging 50 to 67 lm/W overall. Ballast loss can be about 25% of the lamp power with magnetic ballasts, and around 10% with electronic ballasts.
How does a fluorescent ballast work?
Fluorescent lamps use a ballast which transforms line voltage to a voltage to start up and operate the lamp (s). Newer fluorescent ballasts are usually rated for both 120 volts and 277 volts. Some are rated for only 120 volts, others for only 277 volts (used in commercial environments). Find Fluorescent Ballasts
How many volts is a fluorescent lamp?
After this takes place, the voltage is much lower, ranging from 100 volts for tubes under 30 watts and 100 to 175 volts for tubes of 30 watts or more. Following the incandescent bulb, the fluorescent lamp was considered the first major advance of commercial success in small scale lighting.
Do fluorescent lamps work with 120V?
That fluorescent lamps even work at all with 120V is somewhat remarkable, but it's easy to see why electronic ballasts are so popular in the US. Many ballasts for 120V countries use an auto-transformer 'ballast' that increases the available voltage and acts as a current limiter.
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