More about LED (794)

1-07-2008 | On my mountain bike I always used to have one of those well-known flashing LED lights from the highstreet shop. These often gave me trouble...

1-07-2008 | Commercially available plastic LED spinning tops consist of one or more LEDs powered from two button cells and activated using a switch actu...

1-07-2008 | We use a 6 V lead-acid battery as our source of energy, and a Luxeon 3 W LED as our light source. VCC therefore lies between a minimum of ar...

1-06-2008 | LEDs are used everywhere these days, not just as on/off indicators any more but now also as a source of light. Before you mount an LED in yo...

1-06-2008 | In our November 2007 edition we posed you the question, how can one power a notebook computer for half an hour without batteries or a mains...

1-06-2008 | On the cover of an old copy of Elektor in large print it states: ‘Equipment is only as good as its power supply’. Even though that particula...

1-03-2008 | Projectors aren’t very expensive to buy and can be modified to produce a large display in the home. Point it at a white wall or projector sc...

1-02-2008 | High-brightness LEDs are being used more and more widely in lighting applications. Here we present a simple ‘mood light’ using just a few co...

1-02-2008 | The availability of increasingly high-performance digital cameras and falling prices has encouraged a good many people to take an interest i...

1-02-2008 | The circuit described here, called ‘LEDBUS’ allows a practically unlimited number of LEDs to be controlled and up to ten lighting programs c...