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:
Jan. 21, 2020
Filed:
Nov. 03, 2009
Anatoli Saveliev, Zeitlarn, DE;
Sven Probst, Aachen, DE;
Anatoli Saveliev, Zeitlarn, DE;
Sven Probst, Aachen, DE;
LUMILEDS LLC, San Jose, CA (US);
Abstract
A device () for providing an amount of power to a gas discharge lamp () comprises a control circuit () for controlling a supply circuit () for supplying the power according to a power versus voltage graph (). A calculator () calculates a boundary voltage value as a function of a measured voltage value of a voltage signal that has been measured after a predefined time-interval from a cold start of the gas discharge lamp (). A more accurate boundary voltage value results in more stability and in less time required to reach a steady state. The calculator () may be arranged for calculating the boundary voltage value as a function of a minimum voltage value of the voltage signal and of a steady state voltage value of the voltage signal. A memory () may store voltage values of the voltage signal and a processor () may update these voltage values.