The discrete 3 transistor circuit at the lower right would need a resistor (about 5K) in series with the 1uF capacitor to widen the pulse width.
Read More Source: http://ourworld.compuserve.com/homepages/Bill_Bowden/page10.htm#5volts.gif
Thank you.
Related Links
LED Display circuit
Low volt led display circuit
Simple led flasher
Battery 1.5V or 3V Monitor using LM3909
3V Lamp flasher High Current by LM3909
Led display for battery low volt
This entry was posted on Saturday, September 1st, 2007 at 11:05 pm and is filed under LED Flasher, Lighting.
