Unlimited talk, text & web $50 /mo
First 100 MB at up to 4G speeds
- Great phone selection
- America’s Largest 4G Network®
- No annual contract
Power Supplies | LED Lighting Lecture | ROHM LED Lighting
In recent years LEDs and LED lighting has emerged as the leading . A switching power supply outputs a stable DC voltage based on rectification and control .
http://www.rohm.com/products/lighting/led/index3.html