Light tube and power supply circuit

  • US 8,866,396 B2
  • Filed: 02/26/2013
  • Issued: 10/21/2014
  • Est. Priority Date: 02/11/2000
  • Status: Expired due to Term
First Claim
Patent Images

1. A lighting device connectable to a socket of a light fixture, comprising:

  • a housing having a first end and a second end, wherein at least a portion of the housing is transparent or translucent;

    an end cap disposed on one of the first end or the second end of the housing and configured to fit with the socket; and

    a plurality of light emitting diodes disposed inside and extending between the first and second ends of the housing, wherein the plurality of light emitting diodes is arranged to provide light through at least a portion of the transparent or translucent portion of the housing;

    whereina power source is electrically connected to and configured to provide power to the plurality of light emitting diodes through a pulse width modulation circuit and a current limiting circuit, the current limiting circuit comprising an inductive element coupled between the pulse width modulation circuit and at least some of the plurality of light emitting diodes.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×