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Capacitive ladder feed for AC LED

  • US 8,841,856 B1
  • Filed: 10/03/2013
  • Issued: 09/23/2014
  • Est. Priority Date: 10/03/2013
  • Status: Expired due to Fees
First Claim
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1. A circuit serving as a light source, the circuit comprising:

  • a first set of light-emitting diodes (LEDs); and

    a second set of LEDs that is connected in series to the first set of LEDs,wherein the first set of LEDs comprises;

    a first group of LEDs;

    a second group of LEDs connected in anti-parallel with the first group of LEDs, wherein each of the first group of LEDs and the second group of LEDs comprises at least one LED; and

    a first capacitor connected in parallel with the first group of LEDs and the second group of LEDs, andwherein the second set of LEDs comprises;

    a third group of LEDs;

    a fourth group of LEDs connected in anti-parallel with the third group of LEDs, wherein each of the third group of LEDs and the fourth group of LEDs comprises at least one LED; and

    a second capacitor connected in parallel with the third group of LEDs and the fourth group of LEDs.

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