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Radio frequency (RF) controlled lamp with dimmer compatibility

  • US 10,182,488 B2
  • Filed: 03/12/2015
  • Issued: 01/15/2019
  • Est. Priority Date: 03/24/2014
  • Status: Active Grant
First Claim
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1. A radio frequency (RF) controlled lighting unit suitable for connection to at least one of a dimmer configured to adjust a phase cut angle of an input mains voltage from mains in accordance with an adjustable dimming level or an electronic switch configured to provide selection between an on-state and an off-state, the RF lighting unit comprising:

  • a solid state light source;

    a radio circuit configured to receive a wireless control signal, enabling control of the RF lighting unit;

    a rectifier circuit configured to rectify the input mains voltage received from the dimmer or the electronic switch;

    a first power converter configured to drive the solid state light source in response to the rectified input mains voltage and to deliver power to the radio circuit; and

    a second power converter configured to deliver power to the radio circuit when the rectified input mains voltage becomes inadequate for the first power converter due to the phase-cut angle of the rectified input mains voltage or the off-state of the electronic switch.

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