A METHOD OF CONTROLLING A LIGHTING ARRANGEMENT, A LIGHTING CONTROL CIRCUIT AND A LIGHTING SYSTEM

A METHOD OF CONTROLLING A LIGHTING ARRANGEMENT, A LIGHTING CONTROL CIRCUIT AND A LIGHTING SYSTEM

A lighting arrangement such as a LED lamp comprises a light source and associated current driver, or a set of at least two parallel light sources and associated current drivers, supplied by a DC voltage from a voltage-regulated power converter. A feedback circuit provides a temperature-dependent con...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KAHLMAN, Henricus, Marius, Joseph, Maria, ZIJLMAN, Theo, Gerrit
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
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Beschreibung
Zusammenfassung:A lighting arrangement such as a LED lamp comprises a light source and associated current driver, or a set of at least two parallel light sources and associated current drivers, supplied by a DC voltage from a voltage-regulated power converter. A feedback circuit provides a temperature-dependent control input to a control loop of the power converter, such that the DC voltage is adjusted in dependence on a sensed temperature. In this way, the voltage headroom required can be reduced, and efficiency gains are made.