To understand the weight of this PDF, you have to understand the authors. George Overton is a legendary figure in detector design, known for his work with Tesoro and his deep dives into analog signal processing. Carl Moreland is the co-founder of Geotech (one of the internet's oldest repositories for detector circuit design) and a former engineer for White’s Electronics.
Inside the Metal Detector by George Overton and Carl Moreland provides a technical, in-depth guide to the engineering principles, electronics, and DIY circuit design behind metal detectors, including BFO, VLF, and Pulse Induction technologies. The book serves as a practical resource for understanding electromagnetism, coil design, and target identification. For a detailed look at the book, you can view it on Amazon. Inside the Metal Detector: Moreland, Carl - Amazon.com Inside The Metal Detector George Overton Carl Moreland.pdf