LED

LED Torch
LED Torch
June 5, 2013

The LED Torch is based on a 7555 timer running in astable mode (do not use an ordinary 555). A white LED (Maplin order code NR73) produces 400 mcd light output, which, when focussed, can illuminate objects at 30 metres. [more]

LED Torch
LED Torch
June 5, 2013

Based on the Maxim MAX660, designed to power three 3mm/5mm white LED's from 3V (1.5V min) , intended for replacing incandescent bulbs in small torches. [more]

LED Flasher
LED Flasher
March 1, 2011

Based on "Application Notes" for LM317LZ, flashes an LED using the phase-shift principle. [more]