Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
October 20, 2015
0Patent Application Number
139633470
Date Filed
August 9, 2013
0Patent Citations Received
Patent Primary Examiner
Patent abstract
An LED controller circuit for use in an LED drive circuit in which a coil current control scheme is used to deliver power to an LED arrangement from a phase cut dimmer. The controller circuit includes means for determining, based on an analysis/signal processing of the on-time of the transistor, the dimmer characteristics, including the on state and off states of the ac dimmed voltage signal. This avoids the need for the controller circuit to process the dimmer output.
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