Patent · US Active

Circuit arrangement for operating semiconductor light sources

US10219334B2 · kind B2 · utility

0Cited by

0References

16Claims

0Family size

Assignee

OSRAM GmbH · DE

Inventors

Olaf Busse · Munich, DE
Alfons Lechner · Pfaffenhofen an der Ilm, DE
Siegfried Mayer · Leinfelden, DE
Horst Werni · Birkenfeld, DE
Christof Schwarzfischer · Wackersberg, DE

Key dates

Filing date	Jan 25, 2016
Grant date	Feb 26, 2019
Priority date	—
Expiry date	Jan 25, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH05B47/18
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

According to the present disclosure, a circuit arrangement for operating semiconductor light sources includes: a power input for inputting an AC input voltage, an output having a first output terminal, and a second output terminal, which is designed to connect a string of semiconductor light sources, a control input for controlling the operation of the circuit arrangement with a control signal, a rectifier circuit for converting the AC input voltage into a rectified voltage, a converter circuit for transforming the rectified voltage into a current which is suitable for the semiconductor light sources, a first switch arranged between the converter circuit and the output, for the switching of the current through the semiconductor light sources, and a first diode arranged between the first switch and the output, or between the converter circuit and the first switch.

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