In this paper, tunable narrow bandwidth band-stop and band-pass optical filters for visible light communication (VLC) are designed and numerically investigated using a photonic …
KI Hwu, WC Tu, YT Fang - Journal of display technology, 2013 - ieeexplore.ieee.org
In this paper, one AC light-emitting diode (LED) driver with high power factor (PF) and low total harmonic distortion (THD) is adopted, which is added with the proposed switched LED …
I Milashevski, I Galkin… - 2012 13th Biennial Baltic …, 2012 - ieeexplore.ieee.org
This paper presents comparative investigation of both voltage and current fed buck converters. This comparison takes into account the controllability, efficiency and size of the …
A city is smart when investment in traditional and modern infrastructure, human and social capital, fuel well being, high quality of life, and sustainable economic development. The …
In the literature, previous system designs are mainly focused on the use of direct-current light-emitting diodes (DC-LEDs) with fixed voltage bias. As alternating-current (AC)-LEDs …
FL Jenq, TJ Liu, FY Leu - 2011 Fifth International Conference …, 2011 - ieeexplore.ieee.org
Owing to AC LED can be driven directly without any AC to DC converter, the volume and the cost of AC LED can be reduced. Avoiding the power conversion loss, AC LED can have …
KI Hwu, JJ Shieh - Journal of Display Technology, 2016 - opg.optica.org
In this paper, a dimmable ac LED driving circuit with high power factor and low total harmonic distortion is presented, which takes series driving via the basic unit mainly …
YF Liu, CH Yeh, CW Chow - US Patent App. 13/730,304, 2014 - Google Patents
A driving device adapted to at least one light emitting diode, includes a clock recovery unit, a modulation unit, and a bias tee unit. The clock recovery unit receives a first alternating …
KI Hwu, YT Yau - Electric Power Components and Systems, 2018 - Taylor & Francis
Abstract A dimmable AC LED driver circuit with high power factor (PF) and low total harmonic distortion (THD) is proposed, and such a circuit takes series driving based on the …