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Learn how to make a powerful battery charger from scratch with rudimentary materials that you can easily find. Video 2 of this project: Connections and operation • Toroidal charger from scratch video 2 Learn how to calculate the core and wire thickness for any transformer from the following link: • Core and wire calculation for transformer... This and other free videos and courses at www.sabealgo.com Don't forget to subscribe and recommend, we have a lot for you.