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In This Issue..


Latest 150W and 200W LED Power Supplies



Whitepaper: Dimming control of LED's



Application note:

Regulation of Harmonics 




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                                                         July 2012 

Welcome to our July LED Customer Newsletter!


We are delighted to announce the release of our latest 150W and 200W LED Power Supply platforms. These products offer the lowest profile and the highest efficiencies available in the market today, are IP67 rated for harsh environment operation and all come with the industry leading 5 year warranty


In this Newsletter, we also highlight one of the latest Whitepapers from our Applications Engineering Department on the topic of Dimming controls of LED's where we look at the advantages and disadvantages of the main methods of LED dimming control. The important and challenging area of Input Line Harmonics and its influence on system design and power supply selection are discussed in the application note Regulation of Harmonics for electrical systems.

Your feedback on our newsletters is always welcome. Please feel free to contact us with your comments, opinions and suggestions for specific future feature topics. 

Grace Mulqueen
Marketing Executive
Excelsys Technologies Ltd


Latest 150W and 200W LED Power Supplies Offer Lowest Profile in the Industry

 LDB150/200 press image

Excelsys Technologies is delighted to announce  the release of the latest models in our market leading Xled series of LED power supplies.The LDB150 and LDB200 LED power supplies provide 150W and 200W of Constant Current/Constant Voltage power respectively. 


With industry leading efficiencies of up to 93.5%, the LDB150 and LDB200 are lowest profile LED drivers in the market, measuring only 198 x 63 x 35 mm, are IP67 rated (waterproof), UL approved and carry the CE mark. 



             Whitepaper: Dimming control of LED's
Many solid-state lighting applications require control over the emitted intensity of light for both functional and aesthetic requirements. Some of these applications
also require a full dimming capability from fully on to fully off.


This paper looks at the two main methods for implementing these and discusses the advantages of such approaches.



          Application NoteRegulation of Harmonics 


Ideally, an electricity supply should show a perfectly sinusoidal voltage signal at every customer location


However, utilities often find it hard to preserve such desirable conditions for a number of reasons. The deviation of the voltage and current waveforms from sinusoidal is described in terms of the waveform distortion, often referred to as harmonic distortion.