1920s Rare Battery Charger [Restoration]
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Channel: Hand Tool Rescue
Views: 899,679
Rating: 4.8618655 out of 5
Keywords: restoration, antique, vintage, battery, charger, diy, asmr, make, rectifier
Id: 60RTSNMrcOE
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Length: 28min 40sec (1720 seconds)
Published: Thu Feb 06 2020
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I love the naked sparks. You can see and hear it working lol
Mechanical rectifier, always wondered if such a thing were possible. Now I know.
I guess this came before the "TungSol" mercury rectifier used on battery chargers in the 30's-50's.
The 4 coils must be a degausser to prevent the reed from picking up a magnetic charge and sticking to one side.
Edit: Mica?, Yes, it's about the only insulator that would be suitable for that thin back then. As far as the ampmeter going both directions, they probably just used a stock one from a car. It would never go left, unless maybe the contacts were badly out of adjustment.