The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 04, 1996
Filed:
Mar. 20, 1992
Meerten Luursema, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A circuit arrangement for operating a high-pressure discharge lamp provided with a ballast circuit VI for generating a current through the high-pressure discharge lamp from a supply voltage. A controller is provided for controlling the power consumed by the high-pressure discharge lamp. The run-up behavior of the high-pressure discharge lamp is governed by an apparatus III for controlling the luminous flux of the high-pressure discharge lamp and by a device IV for the automatic activation of the controller after the run-up of the high-pressure discharge lamp. As a result, the luminous flux of a high-pressure discharge lamp operated by the circuit arrangement has the same, substantially constant value during substantially the entire time duration of the run-up of the high-pressure discharge lamp as during stationary lamp operation.