Fault-tolerant high-power LED systems driving multiple independent loads

The Power Research Group in the Department of Electrical, Electronic and Computer Engineering at the University of Pretoria has developed fault-tolerant LED drivers which are suitable for supplying multiple independent loads. In most developed countries, as well as in South Africa, lighting loads consume up to 20% of all generated electricity. Until recently, most lighting […]

Extraordinary measures: the role of the lux meter

Different lux meters can provide different readings for the same LED. London Underground must provide safe levels of light for customers and staff, but this could be difficult without reliable lux measurements. London Underground, like much of the UK, is embracing LED lighting. Its low energy consumption and, more significantly, reduced maintenance, mean that there […]

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