fabien van mook


<< | index |

LED flasher

Fabien van Mook, October 2013.


Figure 1 shows the schematic of a LED flasher circuit. It works on one 1.5 V AA battery and makes a bright LED flash every second or so, during more than a half year. The electric energy of the battery is thus used in a very economic way.

Figure 1

Figure 1. The original circuit for the LED flasher.

On solder boards

Figure 2 shows one of the about 6 LED flashers, which I built from the schematic on ordinary solder board since January 2009. Often I use even two batteries and thus feeding it with 3 V. To make the flashing light more visible, a plastic (light conducting) tube is put on the LED.

Figure 2

Figure 2. A LED flasher version on solder board of February 2009.

On printed circuit boards

In September 2013 I designed a printed circuit board with help of Fritzing. Four such boards (with all holes drilled) were manufactured at MijnPrintplaat.nl. Figure 3 shows a printed circuit board and two mounted LED flashers. There are mainly two ways by which the LED can be mounted.

Figure 3

Figure 3. A printed circuit board and two mounted LED flashers.


The original LED flasher circuit by Dave Johnson: http://www.discovercircuits.com/H-Corner/led-flasher.htm.



<< | index |

© Fabien van Mook