International
This is my new and improved earth battery running 4 ultra bright 10mm 28,000 MCD LEDs. I am using a standard Joule Thief circuit wound (bifilar) on a ferrite toroid this time. An N3904 transistor, 1k resistor and a 2.3 volt, 10 Farad super capacitor. The earth battery is putting enough out now to not only run these leds, but also charge the cap as you will see when I disconnect it and bring it inside. I can run more. For more information, go to Overunitydotcom in the Joule Thief topic. Thanks.
What type of ferrite material is needed? I tried many types from another project one I thought was a ferrite donut come to it that it wasn't it was some kind of magnet from some earphones.. Another one was from a power supply in a plastic white plastic case. Thanks for telling me what wire was needed for the project. I have to go get it soon. Thanks for the advice.
By gccengineering1996 [Affiliate User] 1245605694 Reply Spam [+0] Moderate Up Moderate Down RemoveThanks, I know how to do video responses but I will have to learn how to do a playlist.
Bill
10 turns bifilar and 22 ga. insulated stranded wire. 1" OD toroid, 2n3904 trans. and 1k resistor.
Bill
Hi Bill
You should link your videos by creating a video responses, or do a playlist. It makes it easier for the viewers...
Paul
Nice, how many turns and what gauge is your wire?
Paul
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