| Sure, there are many ways to power an LED from the mains. However, in good philosophical (and GPRS) tradition, the shortest way to success o...
More about LED (745)
| This design for a Christmas tree lighting system employs ten red light emitting diodes (LEDs) instead of the usual lamps. The LEDs are power...
| The miniaturisation of components does cause the odd bit of trouble at Elektor Electronics as well. While developing last June’s Electrosmog...
| Remote controlled light switches are becoming more and more common. DIY stores have inexpensive sets consisting of several light switches an...
| In the past, a lot of space in hobby rooms and work stations was taken up by an instrument in a large case with a small screen, but now many...
| This design uses a classic two-transistor astable multivibrator configuration to drive the LEDs via a transformer from two standard 1.5 V al...
| The company Lumileds (from Agilent and Philips) has as its goal the development of LEDs that are suitable for lighting. That is why they are...
| This small circuit could act as a power indicator for the 230 V mains supply and in terms of efficiency is the equal of classical neon bulb...
| The circuit described here is a step-up converter to drive 20 LEDs, designed to be used as a home-made ceiling night light for a child’s bed...
| Using a few diodes and a LED, you can make a nice indicator as shown in associated schematic diagram that can be used for a lot of applicati...