How do you get 3.5 volts to drive a white LED when you only have a 1.5v battery?
(With special thanks to Dave Eselius for keeping this project alive until it was finished.)
New on this site since original publication of this page in 2002:
• Simplest LED Flasher Circuit (in the world? You tell me.) (this page, Click here).
• Rusty Nail Night Light demonstration added (this page, Click here).
• Toroid and Ferrite Bead Winding Notes (Click here).
• New resistor-capacitor circuits to drive LEDs from 1.5 and 3 volts (Click here).
• White LED Stroboscope (Click here).
• Solar Powered Garden Light with PC layout (this page, Click here).
• A Note About Transistor Selection (this page, Click here).
• Common sources of ferrite beads (this page, Click here).
• A note of warning about LEDs and Eye safety (this page, Click here).
• Some tips on getting it running (this page, click here).
• Contributors to this page (this page, click here).
- You may see copies of this page on other sites, but you will only see updates and improvements at www.projects.cappels.org, the only site authorized to publish this material.
http://cappels.org/dproj/ledpage/leddrv.htm
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