| Recently PREMA released the PR4101, a step-down driver designed for power LEDs. It requires an input voltage of between 7 V and 40 V and at...
More about LED (745)
| Here we present a 3D display of LEDs, each of which can be controlled individually.This magnificent cube has at its heart an Atmel AVR micro...
| If you fit a line of LEDs on a circular PCB and power them on continuously, they generate rings of light when the board is spun. If you add...
| Low-voltage halogen lamps have grown in popularity since their launch in the 1980s. The same timeframe has seen the development of ‘electron...
| 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...
| 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...
| 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...
| 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...
| This circuit can be called using your mobile or a regular telephone set (with DTMF keys) and after passing some procedures, you can control...
| 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...