| 发明名称 |
Power supplies for LED light fixtures |
| 摘要 |
The lighting circuit comprises an AC input connectable to receive an AC input voltage, a switched LED array comprising a plurality of LEDs reconfigurable into a plurality of configurations and having an input for receiving a LED driving voltage, a switched capacitor array having an input for receiving a charging voltage and an output selectively connectable to the input of the switched LED array and comprising a plurality of capacitors and switches connected to selectively couple the capacitors across the input or output, a first switched rectifier connected between the AC input and the switched LED array, a second switched rectifier connected between the AC input and the switched capacitor array, and, a control system configured to monitor the AC input voltage and control the switched LED array, the switched capacitor array and the first and second switched rectifiers based on the AC input voltage and a desired light output. |
| 申请公布号 |
US8987995(B2) |
申请公布日期 |
2015.03.24 |
| 申请号 |
US201012912633 |
申请日期 |
2010.10.26 |
| 申请人 |
Koninklijke Philips N.V. |
发明人 |
Moussakov Milen;Foxall Thomas George |
| 分类号 |
H05B39/02;H05B33/08 |
主分类号 |
H05B39/02 |
| 代理机构 |
|
代理人 |
Mathis Yuliya |
| 主权项 |
1. The lighting circuit, comprising:
an AC input connectable to receive an AC input voltage a switched LED array comprising a plurality of LEDs connectable into a plurality of configurations, the switched LED array having an input for receiving a LED driving voltage; a switched capacitor array having an input for receiving a charging voltage and an output selectively connectable to the input of the switched LED array, the switched capacitor array comprising a plurality of capacitors and a plurality of switches configured to selectively couple the capacitors across the input of the switched capacitor array or the output of the switched capacitor array; a first switched rectifier connected between the AC input and the input of the switched LED array; a second switched rectifier connected between the AC input and the input of the switched capacitor array; and, a control system configured to monitor the AC input voltage and control the switched LED array, the switched capacitor array, the first switched rectifier and the second switched rectifier based on the AC input voltage and a desired light output. |
| 地址 |
Eindhoven NL |
