Limited flicker light emitting diode string
First Claim
Patent Images
1. A limited flicker decorative light-emitting diode (LED) string, comprising:
- a power plug adapted to connect to an alternating current (AC) power source and supply AC power to the LED string;
a first pair of LEDs and a second pair of LEDs;
a plurality of LEDs electrically connected in series to form an LED series;
a plurality of rectifying diodes, wherein the plurality of rectifying diodes provide full-wave rectification of the AC power to the LED series and half-wave rectification of the AC power to the first and second pair of LEDs.
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Abstract
A limited flicker decorative light-emitting diode (LED) string includes a power plug adapted to connect to an alternating current (AC) power source and supply AC power to the LED string, a first pair of LEDs and a second pair of LEDs, a plurality of LEDs electrically connected in series to form an LED series, and a plurality of rectifying diodes. The plurality of rectifying diodes provides full-wave rectification of the AC power to the LED series and half-wave rectification of the AC power to the first and second pair of LEDs.
104 Citations
30 Claims
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1. A limited flicker decorative light-emitting diode (LED) string, comprising:
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a power plug adapted to connect to an alternating current (AC) power source and supply AC power to the LED string; a first pair of LEDs and a second pair of LEDs; a plurality of LEDs electrically connected in series to form an LED series; a plurality of rectifying diodes, wherein the plurality of rectifying diodes provide full-wave rectification of the AC power to the LED series and half-wave rectification of the AC power to the first and second pair of LEDs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A decorative LED string, comprising:
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a first power terminal and a second power terminal; a first diode and a second diode electrically connected in series to form a first diode pair, wherein at least one of the first or second diodes is a rectifying diode and the first pair is electrically connected to the first power terminal; a third diode and a fourth diode electrically connected in series to form a second diode pair, wherein at least one of the third or fourth diodes is a rectifying diode and the second pair is electrically connected to the first power terminal; a fifth diode and a sixth diode electrically connected in series to form a third diode pair, wherein at least one of the fifth or sixth diodes is a rectifying diode and the third pair is electrically connected to the second power terminal; a seventh diode and an eighth diode electrically connected in series to form a fourth diode pair, wherein at least one of the seventh or eighth diodes is a rectifying diode and the fourth pair is electrically connected to the second power terminal; a plurality of LEDs electrically connected in series to form an LED series, wherein a first LED of the LED series is electrically connected to the first and second diode pairs, and a last LED of the LED series is electrically connected to the third and fourth diode pairs. - View Dependent Claims (17, 18, 19)
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20. A decorative LED string, comprising:
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a first power terminal and a second power terminal; a first diode, wherein an anode of the first diode is electrically connected to the first power terminal; a second diode, wherein an anode of the second diode is electrically connected to a cathode of the first diode; a third diode, wherein an anode of the third diode is electrically connected to the second power terminal; a fourth diode, wherein an anode of the fourth diode is electrically connected to a cathode of the third diode, and a cathode of the fourth diode is electrically connected to a cathode of the second diode; a fifth diode, wherein a cathode of the fifth diode is electrically connected to the first power terminal; a sixth diode, wherein a cathode of the sixth diode is electrically connected to an anode of the fifth diode; a seventh diode, wherein a cathode of the sixth diode is electrically connected to the second power terminal; an eighth diode, wherein a cathode of the eighth diode is electrically connected to an anode of the seventh diode, and an anode of the eighth diode is electrically connected to an anode of the sixth diode; a plurality of LEDs electrically connected in series to form an LED series, wherein a first LED of the LED series is electrically connected to the second diode and to the fourth diode, and a last LED of the LED series is electrically connected to the sixth diode and the eighth diode. - View Dependent Claims (21, 22)
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23. A limited flicker decorative light-emitting diode (LED) string, comprising:
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a power plug adapted to connect to an alternating current (AC) power source and supply AC power to the LED string; a first plurality of LEDs electrically connected in series to form an LED series; a second plurality of LEDs acting as rectifying diodes, wherein the second plurality of LEDs provides full-wave rectification of the AC power to the LED series and half-wave rectification of the AC power to the second plurality of LEDs. - View Dependent Claims (24, 25)
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26. A method of reducing flicker in a decorative LED string, comprising:
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providing AC power to a set of terminals of the LED string; full-wave rectifying the AC power delivered to a first portion of LEDs of the LED string, wherein the first portion LEDs are electrically connected in series; half-wave rectifying the AC power delivered to a second portion of LEDs of the LED string.
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27. A reduced flicker LED lighting system, comprising:
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an AC power source; a power plug adapted to connect to the AC power source and receive AC power; a plurality of LEDs with a first portion of LEDs and a second portion of LEDs, wherein the first portion of LEDs are electrically connected to form an LED series; a full-wave rectifier adapted to provide full-wave rectified AC power to the LED series; a half-wave rectifier adapted to provide half-wave rectified AC power to the second portion of LEDs; and a wire set electrically connecting the power plug, plurality of LEDs, full-wave rectifier, and half-wave rectifier. - View Dependent Claims (28, 29, 30)
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Specification