LOL!
I have to call this my biggest success!
With 0.6A x 3 = 1.8A into a battery.
(thats if the 3rd one works)
Also the least expensive.
Just adding 4 neos, output wire, 3 bridges, solder, and hot glue.
(not sure how good of an idea hot glue is on the coils)
No fancy machining either.
Could buy ALL the tools I used brand new for $12, including the meter!
A little 'outside the box', but kind of an obvious idea after you see a couple pic's.
G-
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