choke has a coil. and used for lighting the tubelight.
you can also tell me sources also
2007-02-04 18:11:08 · 6 answers · asked by jitendra vishnoi 1 in Science & Mathematics ➔ Engineering
A fluorescent lamp works by striking an arc between the two electrodes at the end of the tube. This arc passes through the gas that is filled inside the tube. The emissions from the arc hit the fluorescent coating on the inner surface of the tube to produce light.
A high voltage is required to strike this arc. This is produced by the choke. The choke is nothing but a coil wound over a core; in other words, an inductor. When you switch on the tube light, the sudden surge of current induces a back-EMF across the choke. This voltage is applied across the electrodes of the tube light and it strikes an arc.
Once the arc is struck, the current flows through the gas inside the tube. There is no further point in letting it flow through the choke after the tube glows steadily, as this would only result in losses. Therefore, the choke needs to be cut-off after the tube light glows steadily. This is done by the starter, which cuts off the current through the choke after some time. (It allows the current to flow through the choke only during the starting, and hence it is called a starter).
2007-02-05 22:24:29 · answer #1 · answered by Bharat 4 · 4⤊ 0⤋
Working Of Fluorescent Tube Light
2016-12-18 06:48:35 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Tube contains vacuum. to make conduction though it we need a kilo volts of electricity. so a normal 230v can not start conduction through the vacuum inside it. so we use the principle that when ever a charging coil is disturbed suddenly, it will produce a kv of electricity across its terminals. for this purpose, we use choke as coil as starter to interrupt the charging coil which develops a kv across it. this kv in addition to supply voltage will helps to conduct through vacuum. the lourcent coating will give the respective color. once conduction started, no need of that choke.
2015-07-02 23:26:41 · answer #3 · answered by john 4 · 0⤊ 0⤋
I'm wondering what the choke is as well? Are you talking about the ballast? or perhaps a capacitor?
2016-03-18 01:32:05 · answer #4 · answered by Anonymous · 0⤊ 0⤋
hi i have question
in my home tube light choke got fire. can you explain the causes of fire?
2015-07-20 00:28:57 · answer #5 · answered by gnagaraju 1 · 0⤊ 0⤋
I think its a step up transformer.
2007-02-05 03:45:06 · answer #6 · answered by afk 3 · 0⤊ 1⤋