| 摘要 |
AN ALTERNATING CURRENT SENSING APPARATUS INCLUDES AT LEAST TWO COILS (10, 12), EACH HAVING A PLURALITY OF TURNS OF WIRE (18, 20) AROUND A CORE (22, 24) WHICH DEFINES A LINEAR AXIS. THE COILS ARE MOUNTED IN SPACED RELATION ON A SUPPORT SURFACE (16) SO AS TO DEFINE AN INTERMEDIATE SPACE (25), AND THE COILS ARE ELECTRICALLY COUPLED ADDITIVELY IN SERIES. THE COILS (10, 12) PRODUCE A DETACTABLLE SIGNAL IN RESPONSE TO AN ALTERNATING ELECTRICAL CURRENT PASSING THROUGH A CONDUCTOR (30) WHICH EXTENDS THROUGH THE INTERMEDIATE SPACE (25). (FIG. 1)
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