10 Year Led Flasher (Version 2 With Boost Converter)

by simpletronic in Circuits > Electronics

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10 Year Led Flasher (Version 2 With Boost Converter)

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.

10 Year LED Flasher (V.2) at Work

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Circuit Diagram

01 circuit.png

Astable (flash Rate)

02 circuit.png

Monostable (pulse Width)

03 circuit.png

Transformer

04 trans.png

Boost Converter

05 trans.png

T1 Secondary

06 trans.png

Start-up

07 trans.png

Managing Energy

08 trans.png

Current Drain

09 measurepng.png

For More Details and Waveforms, Watch Video

10 Year Led Flasher ( version 2 with boost converter )