An introduction to Solid State Lighting
Solid-state lighting (SSL) is the new lighting technology to emerge for many years: it uses semi-conducting materials to convert electricity into light. The term “solid state” refers to the fact that light in an LED is emitted from a solid object (a block of semiconductor) rather than from a vacuum [...]
Since high power LEDs are more and more used in general lighting there is an increasing demand for off-line power supplies to drive these. Due to the VI characteristic of LED such a power supply must have a constant current output. The following article describes a PSU based on a Fairchild Power Switch (FPS™) that [...]
New 240V LED lightbulbs which can be used in place of standard incandescents.Until now the only practical alternative to inefficient incandescent lightbulbs has been CFL Bulbs which are four times more efficient and last about ten times as long as standard bulbs. However rapid development of 240V LED Spotlight technology has finally led to a [...]