New advances in transistor technology could make the light-emitting diode (LED) the commercial light source of the future. Although known for long life and low energy consumption, the LED uses a DC ...

LEDs are durable and save energy. Now researchers have found a way to make LED lamps even more compact while supplying more light than commercially available models. The key to success: transistors ...

Controlling LEDs is really quite simple. As you know, they need to be current limited which is as easy as applying Ohm’s law to your given set of values. To make things even more even there’s a slew ...

This circuit is designed to drive the 1W LEDs that are now commonly available. Their non-linear voltage to current relationship and variation in forward voltage with temperature necessitates the use ...

Gallium-nitride (GaN) transistors enable the compact design of LED lamps that provide more light for less energy. Despite their advantages as light sources—they consume less energy, use no harmful ...

This simple LED driver circuit allows us to drive up to seven LEDs by using a single NiMH (Nickel Metal Hydride) AA cell. The circuit produces voltage pulses at a much higher level than the input ...

CCFL backlights are the most common backlight technology and are used in displays ranging from 5.7 to 23 in. or more diagonal. They can have from one to 24 or more lamps mounted along the edge of the ...

Toshiba has launched the TBD62783A series of highly efficient transistor arrays, said to be the industry’s first with a DMOS FET type source-output driver. This series succeeds the TD62783 series of ...

Incandescent light bulbs are now banned in the EU, while energy-saving lamps remain a bone of contention. In 2016, it will be lights out for halogen bulbs over 10 watts as well. LEDs (light-emitting ...