AC illumination apparatus with amplitude partitioning
First Claim
Patent Images
1. A method, comprising:
- rectifying AC power from an AC power source with an AC cycle time to provide rectified power;
amplitude partitioned switching in a switching sequence of at least first, second and third currents from the rectified power, the switching sequence being locked to the AC cycle time by sensing an amplitude of at least one of the AC power and the rectified power; and
conducting the first, second and third currents through corresponding first, second and third series of color light emitting devices that emit an illumination sequence of corresponding first, second and third color emissions that repeats at least twice each AC cycle time.
1 Assignment
0 Petitions
Accused Products
Abstract
A method includes rectifying AC power and controlling switching of first, second and third currents from and rectified power and a switching sequence that is locked to the AC cycle time by sensing an amplitude of at least one of the AC power and the rectified power. The first, second and third currents are conducted through corresponding first, second and third series of color light emitting devices of different colors. The switching sequence repeats at least twice each AC cycle time.
95 Citations
20 Claims
-
1. A method, comprising:
-
rectifying AC power from an AC power source with an AC cycle time to provide rectified power; amplitude partitioned switching in a switching sequence of at least first, second and third currents from the rectified power, the switching sequence being locked to the AC cycle time by sensing an amplitude of at least one of the AC power and the rectified power; and conducting the first, second and third currents through corresponding first, second and third series of color light emitting devices that emit an illumination sequence of corresponding first, second and third color emissions that repeats at least twice each AC cycle time. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. An illumination apparatus, comprising:
-
a rectifier circuit couplable to AC power with an AC cycle time, the rectifier circuit providing rectified power; a switching circuit that provides switching of at least first, second and third currents, the switching being locked to the AC cycle time by sensing an amplitude of at least one of the AC power and the rectified power; and at least first, second and third series of color light emitting devices that receive the corresponding first, second and third currents and that emit a sequence of corresponding first, second and third color emissions that repeats at least twice each AC cycle time. - View Dependent Claims (9, 10, 11, 12, 13)
-
-
14. An illumination apparatus, comprising:
-
a rectifier circuit couplable to AC power with an AC cycle time, the rectifier circuit providing rectified power; a switch control circuit that comprises a voltage sense input sensing an amplitude of one of the AC power and the rectified power, the switch control circuit providing switch control outputs that are locked to the AC cycle time; a switching circuit that switches at least first, second and third currents; and at least first, second and third series of color light emitting devices that receive the corresponding first, second and third currents and that emit a sequence of corresponding first, second and third color emissions that repeats at least twice each AC cycle time. - View Dependent Claims (15, 16, 17, 18, 19, 20)
-
Specification