AC light emitting diode and AC LED drive methods and apparatus
DCFirst Claim
Patent Images
1. An LED driver comprising:
- an input of a first voltage and a first frequency, wherein the first voltage is an AC voltage;
the LED driver connected to at least one LED circuit and providing an output of a second voltage and a second frequency to the at least one LED circuit, wherein the second voltage is either a rectified DC voltage or a rectified AC voltage and wherein the second frequency of the output is a relatively higher frequency than the first frequency of the input; and
wherein the LED driver includes a voltage regulator which regulates the second voltage at a relatively fixed level with respect to changes in an LED load connected to the output of the LED driver.
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1 Petition
Accused Products
Abstract
An LED device for use with an AC voltage power source configured such that at least one LED emits light during a positive phase of power provided from an AC power supply and at least one LED emits light during the negative phase of power provided from an AC power supply. The LED device includes a first power connection lead and a second power connection lead, both leads capable of being connected to and receiving power from an AC power supply.
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Citations
44 Claims
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1. An LED driver comprising:
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an input of a first voltage and a first frequency, wherein the first voltage is an AC voltage; the LED driver connected to at least one LED circuit and providing an output of a second voltage and a second frequency to the at least one LED circuit, wherein the second voltage is either a rectified DC voltage or a rectified AC voltage and wherein the second frequency of the output is a relatively higher frequency than the first frequency of the input; and wherein the LED driver includes a voltage regulator which regulates the second voltage at a relatively fixed level with respect to changes in an LED load connected to the output of the LED driver. - View Dependent Claims (2, 3, 4, 5, 6, 12)
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7. An LED driver comprising:
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an input of a first AC voltage and a first frequency; the LED driver being electrically connected to at least one LED circuit comprising at least one LED and a bridge rectifier, the LED driver providing an output of a second AC voltage and a second frequency to the at least one LED circuit, wherein the second frequency is a relatively higher frequency than the first frequency; the LED driver providing the second AC voltage and an AC current to the bridge rectifier and the bridge rectifier providing a DC voltage and a DC current to the at least one LED circuit; and wherein the LED driver includes a voltage regulator which regulates the second AC voltage at a relatively fixed level with respect to changes in an LED load connected to the output of the LED driver. - View Dependent Claims (8, 9, 10, 11)
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13. An LED lighting system comprising:
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at least one LED circuit; and an LED driver, the LED driver having an input of a first voltage and a first frequency, wherein the first voltage is an AC voltage; the LED driver connected to the at least one LED circuit and providing an output of a second voltage and a second frequency to the at least one LED circuit, wherein the second voltage is either a rectified DC voltage or a rectified AC voltage and wherein the second frequency of the output is a relatively higher frequency than the first frequency of the input; and wherein the LED driver includes a voltage regulator which regulates the second voltage at a relatively fixed level in response to changes in a load connected to the output of the LED driver. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. An LED lighting system comprising:
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an LED driver, the LED driver having an input of a first AC voltage and a first frequency; the LED driver connected to at least one LED circuit and providing an output of a second rectified pulsed voltage and a second frequency to the at least one LED circuit, wherein the second frequency of the output is a relatively higher frequency than the first frequency of the input; the at least one LED circuit connected to the output of the LED driver, the at least one LED circuit comprising at least one LED and a capacitor, wherein the capacitor receives the second rectified pulsed voltage and smoothes the second rectified pulsed voltage to provide a DC voltage and a DC current to the at least one LED; and wherein the LED driver includes a voltage regulator which regulates the DC voltage at a relatively fixed level with respect to changes in a load connected to the output of the LED driver. - View Dependent Claims (21, 22, 23, 24, 25)
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26. An LED lighting system comprising:
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an LED driver, the LED driver having an input for receiving a first AC voltage at a first frequency and having an output of a second rectified AC voltage at a second frequency, wherein the second frequency is a relatively higher frequency than the first frequency; at least one LED circuit connected to the output of the LED driver; wherein the LED driver includes a voltage regulator and a capacitor; wherein the voltage regulator regulates the second rectified AC voltage at a relatively fixed level in response to changes in a load connected to the output of the LED driver; and wherein the capacitor smoothes a waveform of the second rectified AC voltage and provides DC voltage and DC current to the at least one LED circuit. - View Dependent Claims (27, 28)
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29. An LED lighting system comprising:
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an LED circuit having at least two LEDs connected in series or parallel; a. bridge rectifier; at least one capacitor connected to the LED circuit; a driver; the driver, the bridge rectifier, the at least one capacitor, and the LED circuit all being mounted on a reflective PCB substrate; the driver having an input of a first AC voltage and a first current at a first frequency and the driver providing an output of a rectified and regulated second voltage and a second current at a second frequency to the LED circuit, wherein the second frequency is higher than the first frequency; and the at least one capacitor smoothing a waveform of the rectified and regulated second voltage. - View Dependent Claims (30, 31, 32)
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33. An LED lighting system comprising:
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an LED circuit array having a plurality of different LED circuits, each LED circuit having at least one LED; an LED circuit driver, the LED circuit driver having an input of a first voltage and a first frequency, wherein the first voltage is an AC voltage; the LED circuit driver connected to at least one LED circuit of the plurality of different LED circuits and providing an output of a second voltage and a second frequency to the at least one LED circuit, wherein the second voltage is either a rectified DC voltage or a rectified AC voltage and wherein the second frequency of the output is a relatively higher frequency than the first frequency of the input; at least one LED in the LED circuit array being a different color than other LEDs in the LED circuit array; and the plurality of different LED circuits capable of being connected to the output of the LED circuit driver in parallel one LED circuit at a time. - View Dependent Claims (34, 35, 36, 37)
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38. An LED lighting system comprising:
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an LED circuit array having a plurality of different LED circuits, each LED circuit comprising at least one LED; an LED circuit driver having an input of a first voltage and a first frequency, wherein the first voltage is an AC voltage; the LED circuit driver connected to at least one LED circuit of the plurality of different LED circuits and providing an output of a second voltage and a second frequency to the at least one LED circuit, wherein the second voltage is either a rectified DC voltage or a rectified AC voltage and wherein the second frequency of the output is a relatively higher frequency than the first frequency of the input; at least one of the LEDs in the LED circuit array being coated or doped with at least one of a phosphor, nano-crystals, or a light changing or enhancing substance; at least one of the coated or doped LEDs in the LED circuit array producing a different color of light than another coated or doped LED in the LED circuit array; and the plurality of different LED circuits capable of being connected to the output of the LED circuit driver in parallel one LED circuit at a time. - View Dependent Claims (39, 40, 41, 42)
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43. An LED lighting system comprising:
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an LED circuit array having at least two independently controlled LED circuits, each LED circuit having at least one LED; and an LED circuit driver capable of independently providing power to one or more of the at least two independently controlled LED circuits in the LED circuit array. - View Dependent Claims (44)
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Specification