How to understand the working of “Fluorescent Tube Starter”?

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Update time : 2016-08-18 15:18:13
When the switch is turned on, the power supply voltage is applied to the fluorescent tube starter immediately poles through the ballast and the lamp filament. 220 volts immediately inert gas ionization starter, the glow discharge. Heat glow discharge bimetal thermal expansion, the bipolar contacts. Current path constituted by the ballast, starter contact electrode and the filament ends. Quickly heating the filament current, a large number of electrons are emitted. In this case, since the fluorescent tube starter poles closed, between the poles of the voltage is zero, glow discharge disappears, the tube temperature decreases; bimetal automatic reset, disconnect the poles. In an instant the poles disconnected circuit current is suddenly cut off, ballast have a great self-induced emf, after the supply voltage is superimposed effect of the tube ends. Heat emitted from the filament when a large number of electrons at high voltage is applied across the lamp, with great speed from the low potential side to the high potential side movement. In the process of accelerated motion, the collision pipe argon molecules, so that rapid ionization. Argon ionization heat, heat the mercury vapor to produce, along with the mercury vapor is also ionized and emit intense ultraviolet radiation. Under ultraviolet excitation phosphors emit almost white wall inside the visible light.