Circuit arrangement and method for operating at least one electric lamp and at least one LED

US7786683B2 · kind B2 · utility

Assignee

• OSRAM Gesellschaft mit beschraenkter Haftung · DE

Inventors

• Olaf Busse · Munich, DE
• Markus Heckmann · Munich, DE
• Reinhard Lecheler · Leibnizweg, DE
• Alfons Lechner · Pfaffenhofen an der Ilm, DE
• Siegfried Mayer · Leinfelden, DE
• Thomas Pollischansky · Stadtbergen, DE
• Bernd Rudolph · Forstern, DE
• Bernhard Schemmel · Weßling, DE
• Kay Schmidtmann · Birkenfeld, DE
• Harald Schmitt · Hersbruck, DE
• Thomas Siegmund · West Lafayette, US
• Arwed Storm · Dachau, DE
• Horst Werni · Birkenfeld, DE

Key dates

• Filing date: Jun 27, 2006
• Grant date: Aug 31, 2010
• Expiry date: Oct 8, 2026

Classification

• Technology area (CPC H): Electricity
• CPC primary: H05B35/00
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

The present invention relates to a circuit arrangement for operating at least one electric lamp and at least one LED including: an inverter having a bridge circuit having at least one first bridge transistor and one second bridge transistor arranged in series with one another, a center point of the bridge circuit being defined between the first and second bridge transistors; a lamp supply unit for supplying the electric lamp with energy from the bridge circuit, which includes a supply line with an inductance, via which the center point (M) of the bridge circuit is coupled to a first connection for the electric lamp; the lamp supply unit including an LED supply unit, which is designed to supply the at least one LED with energy. Moreover, it relates to an operating method for at least one electric lamp and at least one LED using such a circuit arrangement.