Patent ID: 9320118
Filing Date: 2016-04-19
CPC Classification: H02M,H05B,Y02B

Claim Text:
1. A light emitting diode (LED) power supply device, comprising: a power supply configured to control an LED component having a threshold voltage; a control unit to control the power supply, the control unit having a control interface for applying external control signals to the power supply; and a voltage supply unit connected to the power supply, wherein the control unit is configured to receive an operating voltage from the voltage supply unit for continuous operation of the control unit in an activated and non-activated control state of the LED component, wherein the voltage supply unit comprises a capacitor coupled to an output side of the power supply, the capacitor configured to receive the operating voltage from the voltage supply and to supply a capacitor voltage as operating voltage to the control unit, and wherein the control unit is configured to command the power supply to provide electrical pulses across the capacitor at a frequency less than about 1 Hz such that, in the non-activated control state, a maximum capacitor voltage lies below the threshold voltage.