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DRIVE CIRCUIT, ILLUMINATION SOURCE, AND LIGHTING DEVICE

  • US 20160286617A1
  • Filed: 11/13/2013
  • Published: 09/29/2016
  • Est. Priority Date: 12/07/2012
  • Status: Active Grant
First Claim
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1. A drive circuit for causing a light-emitting element to emit light, using a dimming signal which is an alternating current signal which has been phase-controlled in response to a dimming level, the drive circuit comprisinga control signal generating unit configured to integrate a voltage of a signal obtained by rectifying the dimming signal to generate a control signal for controlling luminance of the light-emitting element, the voltage being greater than or equal to a first voltage and less than or equal to a second voltage lower than a maximum voltage of the dimming signal.

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