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Circuitry for supplying electrical power to loads

  • US 8,283,904 B2
  • Filed: 09/13/2007
  • Issued: 10/09/2012
  • Est. Priority Date: 09/13/2006
  • Status: Active Grant
First Claim
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1. A power supply, comprising:

  • a boost converter configured to provide a voltage higher than an input voltage to a first load; and

    a flyback converter configured to provide a voltage to a second load, the flyback converter utilizing an inductive element of the boost converter as a primary winding of a transformer of the flyback converterthe inductive element of the boost converter coupled to the input voltage, the flyback converter comprising;

    a secondary winding configured to be coupled to the primary winding;

    a second diode coupled between the secondary winding and a second string of light emitting elements;

    a sub-circuit connected in series with the second diode, the sub-circuit comprising a first capacitive element and the second string of light emitting elements in parallel; and

    a second capacitive element connected in series with the second diode and the sub-circuit.

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