Invention Grant
- Patent Title: AC driven light-emitting diodes
- Patent Title (中): 交流驱动发光二极管
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Application No.: US11569707Application Date: 2005-06-03
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Publication No.: US08084945B2Publication Date: 2011-12-27
- Inventor: Carsten Deppe , Matthias Wendt
- Applicant: Carsten Deppe , Matthias Wendt
- Applicant Address: NL Eindhoven
- Assignee: Koninklijke Philips Electronics N.V.
- Current Assignee: Koninklijke Philips Electronics N.V.
- Current Assignee Address: NL Eindhoven
- Agent Kenneth D. Springer; Mark L. Beloborodov
- Priority: EP04102482 20040603
- International Application: PCT/IB2005/051814 WO 20050603
- International Announcement: WO2005/120134 WO 20051215
- Main IPC: H01J13/46
- IPC: H01J13/46
Abstract:
The invention relates to a circuit (2) comprising at least two parallel-connected light-emitting diodes (4, 5) opposite poled in a first parallel branch (12) and comprising at least two parallel-connected light-emitting diodes (6, 7) opposite poled in a second parallel branch (13), and also comprising a capacitor (8) and a coil (9). According to the invention, the first parallel branch (12) has a capacitor (8) and the second parallel branch (13) has the coil (9). On account of the capacitive parallel branch (10) and the inductive parallel branch (11), idle currents arise which are phase-shifted with respect to one another. The idle currents compensate one another and light changes of the oppositely-poled diode pairs take place at different points in time. A light current is then smoothed.
Public/Granted literature
- US20080054814A1 Ac Driven Light-Emitting Diodes Public/Granted day:2008-03-06
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