Patent ID: 7777605
Filing Date: 2010-08-17
Classification: G01R,H01F

Abstract:
1. An induction coupling apparatus used in a system for performing signal transmission with a power line used as a medium for transmitting a signal, the induction coupling apparatus for electro-magnetically coupling a signal line used as the medium for transmitting a signal to the power line and the power line through a magnetic core, wherein the magnetic core comprises a first holder, a first core element part carried by the first holder, a second holder, and a second core element part carried by the second holder, the first and second holders being connected together to face one another in a first direction such that a gap exists between the first and second core element parts in the first direction, the induction coupling apparatus further comprising: a core parallel moving mechanism extending between the first and second holders for carrying out relative and parallel movement of the first and second holders and the first and second core element parts toward and away from one another in the first direction such that the length of the gap between the first and second core element parts varies; and a predetermined gap length regulating member for limiting parallel movement in the first direction in which the first core element part and the second core element part approach each other to regulate the gap length to the predetermined gap length in the case that the core parallel moving mechanism is used for the parallel movement.