Eric Dollard hit a grand slam with his presentation and demonstration of the 20:1 scale model replica of Tesla’s Colorado Springs Transformer, learn more here:
https://ericpdollard.com/2019/07/25/new-release-theory-calculation-operation-of-the-colorado-springs-tesla-transformer-by-eric-dollard
When I was down in West Central Nevada at EPD Laboratories, Inc. we recorded this live call where a few people asked some questions related to the presentation. Listen to it below and please consider donating to EPD Laboratories, Inc. using the PayPal button in the right column. This helps to make these projects and experiments possible!
Go here to get this history-making presentation:
https://emediapress.com/shop/theory-calculation-operation-colorado-springs-tesla-transformer/
Ernst Willem van den Bergh is a member at Energetic Forum who has shared some of his work in the Tesla sciences. Here is the thread that prompted me to get a copy for Eric Dollard and myself: 
“This book is the result of more than a decade of theoretical and experimental research. It sets out to answer questions about Tesla’s Magnifying Transmitter. What is it? What does it do? How does it do so? Does it really provide free energy? These questions and more you will find answered in this comprehensive book. Every fact you will see backed by Tesla’s own words. Quotes of all relevant articles, lectures and patents have been included. More than that you will read about my own experiments, copies of Tesla’s and their results. This book is divided into 3 parts and every part concludes with a summary in layman’s terms so that everyone can understand what it is that Tesla wanted to give the world and how it was intended to work. Needless to say that this book is a must-read for every Tesla enthusiast and everyone who wants to understand the work of Nikola Tesla, a genius far ahead of his time. With the purchase of this book you are supporting my work to bring back Tesla’s Magnifying Transmitter, and for that I thank you!” – Ernst