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Metal Detector Devices

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Metal detector uses single IC

Metal detector uses single IC

uses a beat-frequency technique to detect coins and other metal objects near the search coil

http://www.edn.com/archives/1997/121897/26di_02.htm

Build your own metal detector

Build your own metal detector

http://home.clara.net/saxons/diy.htm

Metal detector

Metal detector

http://www.geocities.com/tomzi.geo/metal_detector/metal_detector.htm