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Yes but that's a lot of crap in a small space and probably cheapily built.
I'm talking just a mosfet,no AB no fuses, a simple mini mosfet would be great for a lot of people and could be sold for $15 with a high chunk of profit.
Surface mount is very hard to do in a garage without a lot of expensive equipment, but is the only way to make the unit's rather small.
Hand done Surface mount, Is horribly unreliable.
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