Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/14188
Title: Mitigating energy wastage of light-emitting diodes using discretised multilevel pulsation
Authors: Tan, S
Issue Date: 2009
Publisher: Institution of Engineering and Technology
Source: Electronics letters, 2009, v. 45, no. 10, p. 522-524 How to cite?
Journal: Electronics letters 
Abstract: There is a recent trend and growing popularity of using the technique of light pulsation for achieving the dimming control of light-emitting diodes. However, it is found that such a dimming control technique can result in a significant power loss in terms of luminous efficacy. This contradicts the original motive of energy saving through illumination dimming. Total energy consumed for lighting is an overwhelming 8% of depleting energy resources. A potential loss of 2% or more of these resources could go unnoticed owing to poor handling of dimming technology. It is demonstrated that, driving the LEDs with discretised multilevel pulsation, can achieve a quasi-optimally-efficient state of dimming control with a saving of up to 26.7% of the luminous efficacy.
URI: http://hdl.handle.net/10397/14188
ISSN: 0013-5194
EISSN: 1350-911X
DOI: 10.1049/el.2009.0732
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