Introduction: 10 Year Led Flasher (Version 2 With Boost Converter)
This LED flasher will blink for 10 years on a single 1.5v AA cell. My previous circuit used a blocking oscillator to generate the Vdd voltage for IC1. This circuit relies on a BOOST CONVERTER configuration (inductor-diode-capacitor) . Output voltage is high enough to drive at least 5 leds series-connected.