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POWER SUPPLY HAVING AN AUXILIARY POWER STAGE FOR SUSTAINING SUFFICIENT POST IGNITION CURRENT IN A DC LAMP

  • US 20100253234A1
  • Filed: 04/01/2009
  • Published: 10/07/2010
  • Est. Priority Date: 04/01/2009
  • Status: Active Grant
First Claim
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1. A power supply for a DC lamp, comprising:

  • an igniter that generates an ignition voltage for igniting the DC lamp;

    an auxiliary power stage that outputs an auxiliary voltage for sustaining sufficient current in the DC lamp after the DC lamp is ignited;

    a voltage conversion stage coupled to said auxiliary power stage, said voltage conversion stage generating a voltage at a level that is higher than said auxiliary voltage; and

    a switch that couples the auxiliary voltage to the DC lamp and said voltage conversion stage for a predefined period of time.

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