Visible Light Communication (VLC) is an emerging field in Optical Wireless Communication
(OWC) which utilizes the superior modulation bandwidth of Light Emitting Diodes (LEDs) to …

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 …

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 …

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 …

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 …

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 …

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 …

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 …