Electronics hobbyists, circuit designers, and serious treasure hunters.
: Regarding the third edition , Carl Moreland has made a firm decision: "there will be no electronic version; sadly ITMD-2 was widely pirated, done with that." This decision was made to protect the substantial investment of time and expertise that goes into creating such a work.
: Unlike user manuals, this book focuses on the operating principles and electronics behind detection. A massive list of resources, including patents, magazine
A massive list of resources, including patents, magazine articles, and web resources. Which Edition Should You Get? ITMD-2 (2nd Edition):
No, but it includes a chapter on "Probe Coils" that serves as the basis for every DIY pinpointer made since 1990. Combine that with Moreland’s "Pulse Induction Probe" design (also on Geotech). Beat Frequency Oscillator (BFO)
Accessing the technical data while at a lab bench or in the field without carrying a heavy physical volume. Building Your Own Detector
"Inside the Metal Detector" remains an essential resource for the serious treasure hunter and the electronics hobbyist alike. It strips away the mystery of the hobby and replaces it with solid scientific principles. If you are looking to master the art of detection from the inside out, the insights provided by Overton and Moreland are unmatched in the field. a PI detector sends powerful
A significant portion of the text is dedicated to winding, shielding, and balancing search coils (such as concentric and Double-D geometries), which are critical to a detector's depth and sensitivity. Practical Projects and Schematics
Instead of a continuous wave, a PI detector sends powerful, short pulses of current through a single coil. Each pulse generates a magnetic field. When the pulse ends, the field collapses sharply, generating a spike in voltage.
PI ignores ground mineralization because the ground signal decays much faster than the signal from a metallic target. However, traditional PI lacks robust metal discrimination. 3. Beat Frequency Oscillator (BFO)