![15 years and the joule thief laser is still running good, third battery and now needs a new housing but still up and running on low voltage. : r/electronics 15 years and the joule thief laser is still running good, third battery and now needs a new housing but still up and running on low voltage. : r/electronics](https://i.redd.it/tqfa2kbm6fg91.jpg)
15 years and the joule thief laser is still running good, third battery and now needs a new housing but still up and running on low voltage. : r/electronics
![Wind turbine Savonious Charger based on Joule Thief - advise for a charger? - General Electronics - Arduino Forum Wind turbine Savonious Charger based on Joule Thief - advise for a charger? - General Electronics - Arduino Forum](https://europe1.discourse-cdn.com/arduino/original/3X/6/b/6b3e03e01e3cc4936ec3d63e352edaa08244c626.jpg)
Wind turbine Savonious Charger based on Joule Thief - advise for a charger? - General Electronics - Arduino Forum
![Wind turbine Savonious Charger based on Joule Thief - advise for a charger? - General Electronics - Arduino Forum Wind turbine Savonious Charger based on Joule Thief - advise for a charger? - General Electronics - Arduino Forum](https://europe1.discourse-cdn.com/arduino/original/4X/3/2/2/32227457570cc4f041ad01162cc6df7ca5a084d3.jpeg)