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Title:
BLEEDER CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2011/013060
Kind Code:
A3
Abstract:
Bleeder circuits (1) for combinations of phase cutting dimmers (2) and light emitting diode circuits (3) comprise active circuitry (4) to increase a number of options. The active circuitry (4) may comprise a current limiting circuit (5) for limiting a current flowing through the bleeder circuit (1). The active circuitry (4) may comprise a voltage detecting circuit (6) for activating or deactivating,in response to a detection result,the current limiting circuit (5) and may comprise control circuitry such as a micro processor circuit (7) for controlling the current limiting circuit (5) and may comprise a control circuit (9) for using information derived from a current flowing through the light emitting diode circuit (3) for controlling the current limiting circuit (5) and for controlling at least a part of the light emitting diode circuit (3) that comprises anti- parallel light emitting diodes (31-32) or serial and/or parallel light emitting diodes (33- 36).

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Inventors:
DEPPE CARSTEN (DE)
SAUERLAENDER GEORG (DE)
Application Number:
PCT/IB2010/053393
Publication Date:
May 12, 2011
Filing Date:
July 27, 2010
Export Citation:
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Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
PHILIPS INTELLECTUAL PROPERTY (DE)
DEPPE CARSTEN (DE)
SAUERLAENDER GEORG (DE)
International Classes:
H05B44/00
Domestic Patent References:
WO2005115058A12005-12-01
WO1999056504A11999-11-04
WO2004075606A12004-09-02
WO2010011971A12010-01-28
Foreign References:
US20070182347A12007-08-09
US20060192502A12006-08-31
Attorney, Agent or Firm:
BEKKERS, Joost, J., J. et al. (AE Eindhoven, NL)
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