Inductors Lessons
https://www.youtube.com/watch?v=q8_EskwNKek&list=PLA8D2D29f-gJJhCFfTec5vhUTq-G8H5Ou&index=4
https://www.youtube.com/watch?v=kdrP9WbJIb8&list=PLAROrg3NQn7cyu01HpOv5BWo217XWBZu0&index=16
https://www.youtube.com/watch?v=XCnI6ZOYKes&index=15&list=PLAROrg3NQn7cyu01HpOv5BWo217XWBZu0