An overview and demonstration of National Semiconductor's classic, and sadly now obsolete, LM3909 LED flasher/oscillator IC.
Link to the Alltronics eBay store:
https://www.ebay.com/str/alltronicsllc
Links to National Semiconductor's applications note and datasheet:
http://www.bitsavers.org/components/national/_appNotes/AN-0154.pdf
https://pdf1.alldatasheet.com/datasheet-pdf/view/8895/NSC/LM3909.html
Network XIII: Electronics projects, demos, builds and teardowns for hobbyists and makers. All are welcome.
