More about LED (792)

1-12-2008 | Low-voltage halogen lamps have grown in popularity since their launch in the 1980s. The same timeframe has seen the development of ‘electron...

1-12-2008 | This year, for the first time, the efficiency of LEDs has overtaken that of fluorescent tubes. Power LEDs are thus now a realistic and energ...

1-09-2008 | Having treated himself to a new bicycle fitted out with all mod cons including a shiny hub dynamo, the author was looking forward to many mi...

20-08-2008 | What really underlies the conflict in Georgia is the fact that the US has targeted Georgia as an energy corridor for exporting Caspian Sea o...

1-07-2008 | As we all know, LEDs are dimmed by altering the current flowing through them, not the voltage. We achieve this effect in this circuit by usi...

1-07-2008 | This simple LED tester consists of a current source with a potentiometer that can be used to adjust the current. The current source is imple...

1-07-2008 | This circuit was designed as a warning flasher to alert road users to dangerous situations in the dark. Alternatively, it can act as a bicyc...

1-07-2008 | This circuit can be called using your mobile or a regular telephone set (with DTMF keys) and after passing some procedures, you can control...

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...