In a previous article, I discussed LEDs in general and their properties. In this write-up, I want to give some examples of driving LEDs and comparing a few of the most commonly used methods. There is ...

A voltage multiplier is applied as a high source impedance, 36V, 300mA, 12W LED driver. The high source impedance is ideal for driving power LEDs because it accommodates variations in LED junction ...

One of the questions that hobbyists ask over and over is how to select the value of a current limiting resistor for an LED. Usually the seat of the pants response is: “Subtract 2 V from the supply ...

Toshiba America Electronic Components, Inc. (TAEC)* today announced a new charge pump DC/DC converter IC that drives the white light-emitting diodes (LEDs) used to backlight liquid-crystal display ...

If you are looking to replace halogen bulbs with LEDs, combining a rectifier bridge and a current-controlled synchronous step-up/step-down converter creates a high power factor driver circuit, writes ...

Electrical isolation is not always necessary in LED drivers to comply with safety standards. Higher power LED light sources have now begun to replace HID lamps in street lighting, stage and stadium ...

Insensitivity to vibration, long lifetime, high-energy efficiency and the possibility for superior control of the light source are key factors for automotive LED applications. Compared to incandescent ...