Lighting emergency gear – what waveform should we use?

This article explains the pitfalls in providing DC or a modified sinewave to drive LEDs in emergency mode. Many LED luminaires have built-in drivers, so emergency gear must either simulate mains or attempt to drive the LED with DC power. Lower-power LEDs with low power factors are easiest to drive due to their simple circuitry. […]

Public lighting: Lighting the way to smart city development

Public lighting is one of the services most visually seen by the general public within a city (though it almost goes unnoticed). Lighting provides a sense of visual safety and security. This improved sense of safety and security will often lead to an increase and further promotion of community activities, events, sport, trade, industry and […]

Combining natural daylight and artificial lighting in office lighting designs

Office lighting must be flexible, save energy, be controllable and must also make the most of daylight. This is because improved workplace lighting, in terms of both natural daylight and artificial light, has been linked to a 15% reduction in absenteeism in office environments. Related studies have reported productivity increases from 2,8 to 20%, attributable […]