Discharge lamp and control of the same

Details Discharge lamp and control of the same Discharge lamp and control of the same

2007-10-16

2007-10-16

Philogene, Haissa (Department: 2821)

Electric lamp and discharge devices: systems

Polyphase a.c. supply

M phase to n phase

C315S148000, C315S337000, C315S082000, C313S574000, C313S581000, C313S627000

Reexamination Certificate

active

11191982

ABSTRACT:
A discharge tube is driven by a multiple-phase drive circuit, and includes a discharge container having an internal discharge space and multiple electrodes that are secured to the discharge container and correspond to each phase of the multiple-phase drive circuit. The tips of the multiple electrodes protrude into the discharge space, and are oriented toward a predetermined single point of union. All of the electrodes located on one side of a virtual plane that includes the predetermined point of union. Furthermore, a discharge lamp having the discharge tube includes three electrodes, and electric discharge can take place between each pair of electrodes. When the discharge lamp is driven at maximum output, voltage is impressed to the three electrode terminals such that at least one of the voltages VeAB, VeBC, VeCA between the three electrode terminals will be in a discharge period.

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