While LEDs themselves are extremely reliable and have a long lifetime, are electronic LED drivers capable of providing the required current/voltage input to the LEDs over their whole lifetime? This paper aims to address the above question in general and for the Xitanium family of LED drivers developed by Philips Lighting specifically. It will describe some of the strategies which Philips applie...

Xingzhe Xie 1,*, Wenzhi Liao 1, Hamid Aghajan 1,2, Peter Veelaert 1 and Wilfried Philips 1 1 imec-IPI-UGent, Ghent University, Sint-Pietersnieuwstraat 41, 9000 Ghent, Belgium; [email protected] (W.L.); [email protected] (H.A.); [email protected] (P.V.); [email protected] (W.P.) 2 Ambient Intelligence Research (AIR) Lab, Department of Electrical Engineering, Stanford Uni...

Introduction In order to strengthen the research on security and ambient intelligence, as well as the relationship between the content management and security work at Philips Research and at Twente University, a joint research project is set up. The work will be carried out by two PhD students that will be jointly supervised by Prof. Dr. Willem Jonker (Philips/UT) and Prof. Dr. Pieter Hartel (U...

Philips Semiconductor is a supplier to a wide range of markets for analogue and mixed-signal consumer ICs. These products extend from the simplest form of linear products to advanced VLSI analogue systems such as the One-Chip TV. For new mixed-signal products Philips has started to adopt a strategy of testing similar to that used for digital ICs. This is based on efficiently proving the product...

Cloud climate feedback constitutes the most important uncertainty in climate modelling, and currently even its sign is still unknown. In the recently published report of the intergovernmental panel on climate change (IPCC), 6 out of 20 climate models showed a positive and 14 a negative cloud radiative feedback in a doubled CO2 scenario. The radiative budget of clouds has also been investigated ...

Abstract: In this study, on basis of a novel control scheme for Interline Power Flow Controller (IPFC), the dynamic performance of the IPFC is investigated. For this purpose, the Heffron-Phillips model of a Single machine power system is extracted and a novel feedback-based supplementary IPFC controller is applied to the power system. The Particle Swarm Optimization (PSO) algorithm which has a ...

Recently, genetic algorithms (GA) and particle swarm optimization (PSO) technique have attracted considerable attention among various modern heuristic optimization techniques. Since the two approaches are supposed to find a solution to a given objective function but employ different strategies and computational effort, it is appropriate to compare their performance. This paper presents the appl...