VINTAGE General Radio "GenRad" Variac! (How It Works, How it's Wired, & Tests)

How variacs are made, how variacs work, how autotransformers work, and how to modify the input voltage of a variac for 220v to 110v. Brand new or restored Vintage General Radio Variac? Teardown and testing with Simpson panel meters. Enjoy! An affordable 2kVA variac here: https://www.youtube.com/watch?v=AEyPBFOhhHw Support the creation of new videos on this channel by watching the ads placed on my videos, shopping for items shown in my videos at the Amazon/Banggood links provided below, or by making a Paypal donation. All donations, big or small, are greatly appreciated. Thank you! Amazon: https://amzn.to/2Lg902l Banggood: https://bit.ly/2COi2P0 Banggood Flash Deals: https://bit.ly/2HBu9oq (Affiliate Links) Paypal link: http://paypal.me/electronicsNmoreYT Bobby Tectalabyss: Thanks for your generous $5 donation! Jeff Barr: Thanks for your generous $25 donation! xrayjim: Thanks for your generous $25 donation! Ryan Pedersen: Thanks for your generous $20 donation! Wanda Thomas: Thanks for your generous $50 donation! Peter Hines: Thanks for your generous $10 donation! Verinspec: Thanks for your generous $10 donation! Jason Enright: Thanks for your generous $6 donation! Thanks For Watching! ***If you enjoy watching my videos, then be sure to SUBSCRIBE & click the notification bell(set to "ALL"), SHARE links to my videos with others, rate "THUMBS UP", and check out my extensive video playlists for many other videos of interest to you. Doing so helps to ensure that many more videos will be uploaded to my YT channel in the future.***