From 3D movie screens to augmented-reality devices, many modern technologies rely on our ability to manipulate light. Doing ...

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 ...

Many commercial and industrial (C&I) facilities require the use of emergency power systems (EPSs) to ensure power delivery to critical loads. EPSs consist of diesel-powered generators, batteries, ...

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 ...

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 ...

In 2015, all economic indicators pointed to continued market growth for power electronics and LEDs, especially with IGBT modules boosted by EV/HEV industry and general lighting applications, a killer ...

Driver circuits are available in a variety of topologies. These include series (switch-mode) drivers, and parallel (non-inductor) drivers. How LEDs are driven depends on the level of efficiency ...

Texas Instruments Incorporated introduced a new LED controller with constant power regulation. The LM3447 AC/DC LED driver includes a dimmer detect, phase decoder and adjustable hold current circuits ...

144 LEDs total. Three sets of 48 in series connected in parallel. My problem is I don't know what value to use for R1. I'm thinking 600 ohm, but I really don't know how to calculate this. I'm making ...

Hi folks, I'm looking at replacing some overhead fluorescent tubes with LED tubes in our server rooms. One issue, however, is the occasional surge through the lighting system. The fluorescent bulbs ...