No Image

PWM RGB Controller

October 25, 2010 Rust 0

The design of a Pulse Width Modulated Red-Green-Blue controller will be explained here. This design is efficient because this design uses multiple strings of six […]

No Image

Powering LED from Single AA Cell

September 17, 2010 Rend 0

The benefit of LED is longer lifetime than incandescent lamp, and even higher efficiency in latest LED technology. LED is also very compact, but unfortunately […]

No Image

White LEDs Mains Night Light

July 18, 2010 Rust 0

WARNING: Don’t touch the circuit when plugged to the mains supply, this will cause a lethal electrical shock since it’s not isolated from the mains […]