Patent ID: 8829804
Filing Date: 2014-09-09
Classification: H05B

Abstract:
1. An AC-LED lighting circuit, comprising an AC-LED arrangement with at least a first set of LEDs connected according to a first polarity and a second set of LEDs connected according to the opposite polarity, and (i) a source of a polarity-selectable DC input signal to be applied to the AC-LED arrangement or (ii) a connecting means for connecting the AC-LED lighting circuit to a fixed-polarity DC input signal and a conversion means (T a polarity controller configured to control the polarity of the polarity-selectable DC signal applied to the AC-LED arrangement such that the first set of LEDs of the AC-LED arrangement is driven when the polarity-selectable DC signal has the first polarity, and the second set of LEDs of the AC-LED arrangement is driven when the polarity-selectable DC signal has the opposite polarity, wherein the polarity controller is configured to control the polarity of the polarity-selectable DC signal applied to the AC-LED arrangement according to an operating history of the AC-LED arrangement.