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. 28, 2016
Filed:
Sep. 04, 2013
Osram Gmbh, Munich, DE;
Hubert Maiwald, Neutraubling, DE;
OSRAM GmbH, Munich, DE;
Abstract
An electronic ballast may include: a rectifier; a first unit including a first cascade of LEDs and a first storage capacitor connected in parallel with the first cascade; a second unit including at least a second cascade of LEDs and a second storage capacitor connected in parallel with the second cascade; wherein the second unit includes a diode coupled in series with the parallel circuit including the second cascade; wherein the electronic ballast includes: a current controller with an actual value input and a setpoint value input, a setpoint value presetting apparatus for the current through the cascades, wherein the setpoint value presetting apparatus is designed to provide a setpoint value at the setpoint value input which is proportional to the voltage at the output of the rectifier; a first actuating element; wherein the controller includes a drive output coupled to the first actuating element and a second actuating element.