AC to DC LED illumination devices, systems and methods
First Claim
1. An illumination device comprising:
- a full wave rectifier for converting an alternating current (AC) supply into a direct current (DC);
a current limiting diode (CLD) module coupled in series to an output of the full wave rectifier, the CLD module comprising at least two CLDs coupled in parallel; and
a light emitting diode (LED) module coupled in series between an output of the CLD module and the full wave rectifier, the LED module comprising a plurality of LEDs.
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Abstract
Illumination devices (10), systems and methods that convert an alternating current (AC) supply (14) to a direct current (DC) for powering a plurality of light emitting diodes (LEDs) are disclosed. An illumination device (10) comprises a full wave rectifier (12) for converting the AC supply into a direct current (DC). A current limiting diode (CLD) module (16), comprising at least two CLDs coupled in parallel, is coupled in series to an output of the full wave rectifier and a light emitting diode (LED) module (18) comprising a plurality of LEDs is coupled in series between an output of the CLD module (16) and the full wave rectifier (12).
93 Citations
28 Claims
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1. An illumination device comprising:
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a full wave rectifier for converting an alternating current (AC) supply into a direct current (DC); a current limiting diode (CLD) module coupled in series to an output of the full wave rectifier, the CLD module comprising at least two CLDs coupled in parallel; and a light emitting diode (LED) module coupled in series between an output of the CLD module and the full wave rectifier, the LED module comprising a plurality of LEDs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method of powering an illumination device including:
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converting an alternating current (AC) supply into a direct current (DC) with a full wave rectifier; and passing the DC into; a current limiting diode (CLD) module coupled in series to an output of the full wave rectifier, the CLD module comprising at least two CLDs coupled in parallel; and a light emitting diode (LED) module coupled in series between an output of the CLD module and the full wave rectifier, the LED module comprising a plurality of LEDs. - View Dependent Claims (27, 28)
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Specification