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    sasikanth's Avatar
    sasikanth Posts: 1, Reputation: 1
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    #1

    Feb 13, 2009, 01:58 AM
    Working of tubelight ( role of choke and starter)
    Give me in detail
    sarnian's Avatar
    sarnian Posts: 462, Reputation: 9
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    #2

    Mar 26, 2009, 04:16 AM
    Hello sasikanth

    A fluorescent light has very little electrical resistance. The choke has three functions :

    1 - to limit the current during normal operation.
    2 - to limit the current through both filaments during starting.
    3 - to start the tubelight discharging.

    A choke is a coil. Interupting the current through a coil (by the starter) produces a short peak voltage. This starts the discharge in the tubelight.
    During starting the higher current heat both filaments to support starting.

    Diagram of fluorescent light (tube light)

    A = fluorescent lamp
    B = electricity supply
    C = starter
    D = Bi-metal contact
    E = Noice suppressor
    F = 2 filaments
    G = Choke
    pmkr007's Avatar
    pmkr007 Posts: 1, Reputation: 1
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    #3

    Oct 9, 2011, 03:25 AM
    I don't know
    shilus's Avatar
    shilus Posts: 2, Reputation: 2
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    #4

    Nov 27, 2011, 02:51 AM
    A starter is actually a capacitor connected in parallel with a fluorescent lamp.
    To strike a f.lamp a sudden spark of current discharge is required in the tube.the starter supplies this initial spark.
    When a tube light arrangement is connected to the supply,the starter charges(charging is as in a capacitor).a starter current flows during this session.
    On reaching the striking voltage(the voltage just needed to flash the light for the first time) the starter discharges and a sudden current flows in the tube ionising the gas and giving it the glow.
    After this starter current becomes nil.
    For more details and circuit diagrams,see the link.
    http://en.wikipedia.org/wiki/Fluorescent_lamp#Mechanism_of_light_production

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