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Physicians in the late 1800's liked to tout the benefits of electrical stimulation on (and in) the bodies of their patients, claiming to be able to cure a wide variety of ailments.
Today, I go through and clean, repair and hopefully preserve a galvanic powered, electro-therapy machine, also know as a portable battery or Gaiffe instrument. This little thing can turn low voltage DC into high voltage AC so that a stimulating shock is felt. I hope you enjoy as I explain how this works with some animations to help.
While I usually do restorations, this has been on my to-do list for awhile. I have tried to learn as much as I could about it to ensure it is safe and I have learnt how to do some simple animation to properly explain how it does what it does.
If you are here for the device more than the clean and repair, try looking up the book I reference and learnt a lot from, "An International System of Electro-therapeutics' first published in 1894.
play.google.com/store/books/d...