| 摘要 |
For a discharge lamp, partic, a fluorescent lamp, the starting device is a reverse-conductive semi-conductor switch which always conducts in the reverse direction, and a reverseconductive triode thyristor which is the primary operating element of the semi-conductor switch. When starting the thyristor turns on at a phase angle theta, in a positive half cycle of the applied voltage euv. The current then flows through a loop including the stabilizer, the filament, the element, the thyristor and the other end filament.
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