Device for operation of a high pressure discharge lamp and a...

Electric lamp and discharge devices: systems – Surge generator or inductance in the supply circuit

Reexamination Certificate

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Details

C315S290000, C315S246000, C315S225000, C315S291000, C315S2090SC, C315SDIG002, C353S098000, C353S107000

Reexamination Certificate

active

07138769

ABSTRACT:
A device for operating a discharge lamp of the alternating current operating type has a high pressure discharge lamp with a silica glass discharge vessel in which a pair of opposed electrodes are located and on which a trigger electrode is located, a feed device which supplies an alternating discharge current to the high pressure discharge lamp, the feed device having a starter circuit, an inverter circuit with at least two switching devices; a coil which is located downstream of the inverter circuit and is series-connected to the discharge lamp; and a control element which produces on/off driving in alternation with a dead time, and in which the inductance of the coil is at most 210 μH.

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patent: 6575580 (2003-06-01), Okamori et al.
patent: 6661184 (2003-12-01), Okamoto et al.
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patent: 6927539 (2005-08-01), Arimoto et al.
patent: 6943503 (2005-09-01), Ozasa et al.
patent: 2002/0101201 (2002-08-01), Furukawa
patent: 2003/0011320 (2003-01-01), Okamoto et al.
patent: 2003/0090633 (2003-05-01), Miyata
patent: 2005/0206326 (2005-09-01), Suzuki et al.
patent: 1 162 865 (2001-12-01), None

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