Invention Grant
US09370062B2 LED lighting apparatus comprising an energy storage module and method for operating the LED lighting apparatus 有权
LED照明装置包括能量存储模块和用于操作LED照明装置的方法

LED lighting apparatus comprising an energy storage module and method for operating the LED lighting apparatus
Abstract:
An LED lighting apparatus is provided. The apparatus has an LED luminous unit having multiple plurality LEDs and a switching arrangement. The LED luminous unit has different forward voltages in different switching states. The apparatus also has a control device for driving the LED luminous unit and a current sink device in a normal operating mode, in which the forward voltage and the LED current of the LED luminous unit are adapted to an instantaneous value of a supply voltage. An energy storage module of the apparatus provides a storage voltage and supplies the storage voltage to the LED luminous unit. The control device drives the LED luminous unit and the current sink device in a storage operating mode, such that the forward voltage and the LED current of the LED luminous unit are adapted to an instantaneous value of the storage voltage.
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