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.
I'm sure there are circuits on the web, but I have 6 off the shelf, and under $8 each, and they have built in Lithium batteries as well. Don't know the actual retail price, I grabbed them from surplus/closeout. They are small, light weight, and just leave them in the window sill until I need a 5 volt portable source.
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