H - Electricity – 05 – B
Patent
H - Electricity
05
B
H05B 41/26 (2006.01)
Patent
CA 2132898
ABSTRACT OF THE DISCLOSURE This invention relates to a new method of starting an operating circuit for gas discharge lighting systems, in particular fluorescent lighting, and the starting circuitry therefore. The circuit is generally improved and provides for totally adjustable start which occurs in three-stages. The circuit is also designed to meet all current and future criteria for rapid start ballasts. In the first stage of the start, the power supply and inverter operate are fully operational, and a small of amount of current is applied to the lamps to provided a preheat period. In the second stage, the preconverter is fully activated and capacitive elements in the preconverter become fully charged. In the third and final stage, the switching element in the start circuit switches on, allowing full voltage to be applied across the output. Thus all main circuit elements are stabilized prior to full voltage being applied to the bulbs, allowing a very short time for stabilization of lamp arc current. 28
Bogdan Alexey
Ochrim Stepan
Safronov Jouri
Strouk Igor
Armstrong R. Craig
Bogdan Alexey
Faplex Research Inc.
Ochrim Stepan
Safronov Jouri
LandOfFree
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