Electric lamp and discharge devices: systems – With cathode or cathode heater supply circuit
Patent
1999-03-31
2000-03-28
Vu, David H.
Electric lamp and discharge devices: systems
With cathode or cathode heater supply circuit
315105, 315209R, H05B 3702
Patent
active
060436069
ABSTRACT:
The invention relates to a circuit arrangement for operating a discharge lamp with a high frequency current comprising a power feedback circuit and a electrode preheater. The circuit arrangement comprises an antiboost switch for disabling the power feedback circuit before the lamp has ignited and enabling the power feedback circuit after the lamp has ignited- In accordance with the invention the antiboost switch is also used to enable the electrode preheater before the lamp has ignited and to disable the electrode preheater after the lamp has ignited.
Arts Paulus P. B.
Langeslag Wilhelmus H. M.
Willaert Jurgen M. A.
Blocker Edward
Franzblau Bernard
U.S. Philips Corporation
Vu David H.
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