Thread: Bedini SG
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Old 08-17-2007, 04:27 AM
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Aaron Aaron is offline
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Join Date: Feb 2007
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Shamus SG

Very Cool! Schematic looks good. Very nice bare bones ssg.

Those alkaline batts aren't the best but they can be charged at least a few times from my experience before having to throw them away. I'd recommend using some 6v and/or 12v gel cell batts...the black body type you can get at radio shack or elsewhere.

Those are good to learn with.

The hum you discovered is the circuit is self oscillating at high frequency. Most likely this is what is happening. If you have a scope on it, you will see something like this pic.


I played with my roller skate motor for months before doing anything else. Not even trying to charge anything with it. Will learn a lot more if you just get obsessed about the bare basic model first without doing anything else. In my opinion.
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Aaron Murakami

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