For hobbyists looking to get their hands dirty, Inside the Metal Detector includes complete, tested projects:
High-powered bursts of current are sent into the ground and sharply turned off. This creates a collapsing magnetic field. Inside The Metal Detector George Overton Carl Moreland.pdf
Are you interested in a specific technology, such as or Very Low Frequency (VLF) ? For hobbyists looking to get their hands dirty,
BFO is the simplest form of metal detection technology, often used in entry-level or DIY kits. Uses two separate oscillators to create an audible beat. Frequencies shift when the search coil passes over metal. BFO is the simplest form of metal detection
Inside the Metal Detector by George Overton and Carl Moreland is a comprehensive technical guide detailing the physics, electronics, and design principles behind metal detection technology. The book, aimed at hobbyists and DIY builders, provides practical, tested projects for VLF and Pulse Induction devices alongside in-depth explanations of discrimination and ground balance. Detailed information on the book can be found on Amazon. Inside The Metal Detector : Overton, George - Amazon