{ "item_title" : "Inside the Metal Detector", "item_author" : [" Moreland "], "item_description" : "Inside the Metal Detector is the definitive book on metal detector technology and design. But it is not just a book for those wanting to understand detector design, it also offers valuable operational insight to the detectorist who wants to know more about how targets respond and how detectors behave.After a high-level overview of detector types, the basics of magnetics and induction are explained, including simple experiments. The physics of magnetic and eddy target responses are covered as are the reasons for commonly encountered complex responses in field situations. Coil type, performance comparisons, and construction techniques are also explained. The metal detector topologies covered include:Energy TheftBFOOff-ResonancePLLTR and TR-DiscriminationVLF ground balance and motion filteringVLF-DiscriminationPulse Induction including ground balance methodsMultifrequency techniquesAdvanced PI techniquesHybrid methodsDigital techniquesMost topics include working example designs. Finally, there is an extensive list of resources including books, magazine articles, and patents. ITMD-3 represents a significant re-write from ITMD-2 with little recycled material and all-new example designs, and with over 250% more material.", "item_img_path" : "https://covers3.booksamillion.com/covers/bam/0/98/583/423/0985834234_b.jpg", "price_data" : { "retail_price" : "70.00", "online_price" : "70.00", "our_price" : "70.00", "club_price" : "70.00", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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