جهاز كشف المعادن تحت الارض how to make a metal detector

The simplest construction of a metal detector is that it contains an alternating current generator oscillator that passes through a coil and generates an alternating magnetic field current. If there is a conductive part near the coil, it will create a cyclic current in the metal, thus producing an independent magnetic field in the metal part. Metal and gold detector is a gold detector how to make a metal detector #detector #Metal_detector #metal_detector_machine