Patent · US Active

Circuit arrangement for a light source

US11252802B2 · kind B2 · utility

0Cited by

1References

18Claims

0Family size

Assignee

OSRAM GmbH · DE

Inventors

Klaus Fischer · Augsburg, DE
Felix Franck · Hersbruck, DE

Key dates

Filing date	Jan 21, 2021
Grant date	Feb 15, 2022
Priority date	—
Expiry date	Jan 21, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH05B45/345
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A circuit arrangement for an LED luminaire comprises a plurality of LED strings, an anode terminal line, a cathode terminal line, a plurality of first switching elements, connected in series into the anode terminal line and subdivided into individual line sections, and a plurality of second switching elements, connected in series into the cathode terminal line and subdivided into individual line sections. Each of the LED strings may be connected to the anode terminal line via a first switching element and/or the second switching elements. Each of the first switching elements may be configured to feed an operating current to an LED string, to electrically connect line sections if the current flowing through the LED string exceeds a predetermined value, and to electrically isolate line sections if the current flowing through the LED string falls below a predetermined value.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.