Power supplies for LED light fixtures
First Claim
1. The lighting circuit, comprising:
- an AC input connectable to receive an AC input voltagea 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.
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Accused Products
Abstract
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.
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Citations
24 Claims
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1. The lighting circuit, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method comprising:
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providing 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; providing 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; providing a first switched rectifier connected between an AC input and the input of the switched LED array; providing a second switched rectifier connected between the AC input and the input of the switched capacitor array; monitoring an AC input voltage at the AC input; and
,controlling 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. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification