LED luminaires need a driver circuit for working properly. Most of the drivers have disadvantages such as losses during operation. This issue becomes more important while supplying with limited sources renewables. To overcome problem, this study proposes novel energy efficient based on zero voltage switching (ZVS) single-ended primary inductance converter (SEPIC) technology. Driver and hence we...

As LED lighting technology becomes omnipresent, lighting environments become more advanced and allow for adjusting various parameters such as color, brightness, and saturation. This poses challenges for interaction design, particularly when lighting environments are shared between multiple users. This paper presents “Vuur”: a shared physical interface with which users can control lighting in me...

The paper begins by discussing various approaches to hardware specification and verification. The main emphasis is on using mechanical verification tools to assist the verification process. The case study is the verification of a seven-segment LED display decoder circuit design, in which two popular verification tools, HOL and PVS, are compared and evaluated.

In this paper, we present a new design of a sweptvolume 3D-360-degree display system with rotating LED panel. This system, which adopts the idea of modular design, is constituted of a mechanical part, a circuit part and a software part. The circuit part is mainly composed of synchronous control module, high speed data transmission module, display module and display control module, etc. The mech...

A high efficiency LED (Light Emitting Diode) driver based on Buck converter, which could operate under a wide AC input voltage range (85 V 265 V) and drive a series of high power LEDs, is presented in this paper. The operation principles, power loss factors of the LED driver in this study are analyzed and discussed in detail and some effective ways to improve efficiency are proposed through sys...