| 摘要 |
The invention relates to a device for locating metallic objects, with at least one transmit coil ( 116 ) and at least one receive turn system ( 112, 114; 212, 214 ), which are inductively coupled to one another. According to the invention, switching means ( 1, . . . , 8; 1' a, 2' a, 3' a, 1' b, 2' b, 3' b) are provided, which make it possible to vary the effective number of turns of the at least one receive turn system ( 112, 114; 212, 214 ). The present invention also relates to a method for operating a device of this type, in particular a method with which the adjustment of a voltage U induced in a receive coil ( 112, 114; 212, 214 ) takes place by connecting an adjustment turn system ( 113, 115; 213', 215 ') to the turns ( 113, 115; 213, 215 ) of the receive turn system ( 112, 114; 212, 214 ).
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