Reader Shawn wrote in with this power pickle: I have a Dell Studio Laptop. When I turn off my computer, the power-button light stays on and blinks. The only way I can stop it from blinking is to ...

MSI motherboards use light-emitting diodes to report the status of the computer. Most computers have an LED for the power and an LED for the hard drive. If the PC is turned on, the power LED glows ...

This project is a simple universal Power LED Driver. The Power LED can be controlled by the built-in PWM signal generator or driven from an external drive signal depending on how the hardware is ...

Portable chargers are supposed to be the quiet workhorses in your bag, not a source of fire risk on your desk or nightstand.

National Semiconductor's LM3402, LM3404 and LM3405 family of LED drivers are designed to power the 1-W to 5-W, high-brightness LEDs. National Semiconductor’s LM3402, LM3404 and LM3405 family of ...

Thanks to their energy savings, long service life, durability and design flexibility they offer, light emitting diodes (LEDs) are rapidly replacing incandescent and fluorescent technologies in both ...

The power generated by a drop of water falling onto a droplet-based electricity generator (DEG) can light up 100 small LED bulbs. (Courtesy: City University of Hong Kong) The motion of water, ...