Discharge lamp with heating electrode circuit

Details Discharge lamp with heating electrode circuit Discharge lamp with heating electrode circuit

1999-03-31

1999-11-16

Vu, David H.

Electric lamp and discharge devices: systems

With cathode or cathode heater supply circuit

315105, 315209R, H05B 3702

Patent

active

059864087

ABSTRACT:
The invention relates to a circuit arrangement for operating a discharge lamp with a high frequency current comprising a power feedback circuit and an 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.

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