Invention Grant
US08446109B2 LED light source with direct AC drive 有权
LED光源,带直流交流驱动

  • Patent Title: LED light source with direct AC drive
  • Patent Title (中): LED光源,带直流交流驱动
  • Application No.: US13084336
    Application Date: 2011-04-11
  • Publication No.: US08446109B2
    Publication Date: 2013-05-21
  • Inventor: Long Yang
  • Applicant: Long Yang
  • Applicant Address: US CA Livermore
  • Assignee: Bridgelux, Inc.
  • Current Assignee: Bridgelux, Inc.
  • Current Assignee Address: US CA Livermore
  • Agent Calvin B. Ward
  • Main IPC: G05F1/00
  • IPC: G05F1/00 H05B39/04
LED light source with direct AC drive
Abstract:
A light source and method for operating a light source are disclosed. The present invention includes a light source and method for using the same. The light source includes a power coupler, a reconfigurable two-dimensional LED array and a controller. The power coupler is configured to receive a power potential that varies as a function of time. The LED array has a plurality of configurations of LEDs, each configuration being characterized by a minimum bias potential and a maximum bias potential. The LED array generates light when a potential between first and second power terminals is greater than the minimum bias potential. The controller varies the configuration of the array such that the power potential remains between the minimum and maximum bias potentials as the power potential varies.
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