LED Torch


Posted on Apr 17, 2012

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. Try Conrad Electronic for what appears to be a stronger white LED (order code 15 37 45-11). A convex lens with short focal length is placed in front of the LED to focus the beam. If banding occurs at the beams perimeter, use another very short focal length lens directly in front of the LED to smooth the beam.


LED Torch
Click here to download the full size of the above Circuit.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Voltage-Level Indicator
Useless Electronic Circuits
photoresistors servo and arduino
24W amplifier using TDA1516
Rustl3rs Custom Smart LED Light
Home-Built Pulsed Multiple Gas (PMG) Laser



Top