More about LED (792)

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...

1-02-2008 | LEDs are all the rage lately and the high-power blue and white ones in particular even appeal to unexpected audiences like youths of the msn...

1-12-2007 | It can often be fairly dark under water, especially at greater depths. A diving torch is essential if you want to be able to enjoy the marin...