Alex Glow
Published © GPL3+

Joule Thief PCB: Power from "dead" batteries!

Build a small circuit from salvaged components, to make an LED shine brightly from low-voltage sources.

IntermediateFull instructions provided2 hours3,736
Joule Thief PCB: Power from "dead" batteries!

Things used in this project

Hardware components

Custom fabricated PCB
OSH Park Custom fabricated PCB
https://oshpark.com/shared_projects/0COoAX6k
×1
Maker Tape (1/4")
Brown Dog Gadgets Maker Tape (1/4")
×1
General Purpose Transistor NPN
General Purpose Transistor NPN
×1
LED (generic)
LED (generic)
×1
AA Batteries
AA Batteries
Dead ones! (AAAs also work.)
×1
Resistor 1k ohm
Resistor 1k ohm
×1
Avnet Right-angle slide switch (surface mount)
×1
Wire, Wrapping Wire
Wire, Wrapping Wire
×1

Hand tools and fabrication machines

Soldering iron (generic)
Soldering iron (generic)
Plier, Needle Nose
Plier, Needle Nose
Hot glue gun (generic)
Hot glue gun (generic)

Story

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Schematics

Circuit diagram

Credits

Alex Glow

Alex Glow

142 projects • 1459 followers
The Hackster team's resident Hardware Nerd. I like robots, music, EEG, wearables, and languages. FIRST Robotics kid.

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