Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
There are a few Joule Thief circuits linked in Google.
This one is the same size as a small lightbulb and works from a 1.5V battery cell. Others use a larger ferrite core with thicker wire for a higher brightness.
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