A coil component includes: a coil embedded in a substrate body and having a winding part constituted by a wound conductor; wherein the substrate body has: a first region sandwiched between one end surface of the substrate body and a plane parallel with the one end surface and running through a portion of a first external electrode farthest away from the one end surface; a second region sandwiched between another end of the substrate body and a plane parallel with the another end surface and running through a portion of a second external electrode farthest away from the another end surface; and a third region between the first region and the second region; and the winding part is provided in the third region, and also in the first region where it is wound by one turn or more.

A coil component includes: a coil embedded in a substrate body and having a winding part constituted by a wound conductor; wherein the substrate body has: a first region sandwiched between one end surface of the substrate body and a plane parallel with the one end surface and running through a portion of a first external electrode farthest away from the one end surface; a second region sandwiched between another end of the substrate body and a plane parallel with the another end surface and running through a portion of a second external electrode farthest away from the another end surface; and a third region between the first region and the second region; and the winding part is provided in the third region, and also in the first region where it is wound by one turn or more.

A medical instrument is provided in which a wireless IC tag is fixed to a first or second body, such that at least part of the wireless IC tag is positioned more frontward than a front end of a first ring and a front end of a second ring and more backward than a support. A winding axis of an inductor is orthogonal to the up-down direction and intersects the front-back direction so that electric, magnetic, or electromagnetic field coupling is established between a resonant circuit and a metal medical instrument. Moreover, the metal medical instrument either emits a transmission signal, which has a frequency equal to a predetermined resonant frequency and supplied from the resonant circuit, as an electromagnetic wave, or it receives a reception signal having a frequency equal to the predetermined resonant frequency as an electromagnetic wave, and supplies the reception signal to the resonant circuit.

A medical instrument is provided in which a wireless IC tag is fixed to a first or second body, such that at least part of the wireless IC tag is positioned more frontward than a front end of a first ring and a front end of a second ring and more backward than a support. A winding axis of an inductor is orthogonal to the up-down direction and intersects the front-back direction so that electric, magnetic, or electromagnetic field coupling is established between a resonant circuit and a metal medical instrument. Moreover, the metal medical instrument either emits a transmission signal, which has a frequency equal to a predetermined resonant frequency and supplied from the resonant circuit, as an electromagnetic wave, or it receives a reception signal having a frequency equal to the predetermined resonant frequency as an electromagnetic wave, and supplies the reception signal to the resonant circuit.

A modularized transformer includes an annular iron core, a first module encircling the annular iron core, a second module encircling the first module, a third module encircling the second module, a fourth module encircling the third module, and a primary-side power supply line mounted on the fourth module and encircling the annular iron core. Thus, the modularized transformer has a modularized structure and includes multiple modules that are extended and increased to amplify the voltage or current continuously and to regulate the voltage or current.

A modularized transformer includes an annular iron core, a first module encircling the annular iron core, a second module encircling the first module, a third module encircling the second module, a fourth module encircling the third module, and a primary-side power supply line mounted on the fourth module and encircling the annular iron core. Thus, the modularized transformer has a modularized structure and includes multiple modules that are extended and increased to amplify the voltage or current continuously and to regulate the voltage or current.

A reactor includes a coil, an annular magnetic core that forms a closed magnetic circuit when the coil is excited, a plurality of divided reactors arranged in parallel, and a holding member that holds the plurality of divided reactors in a state in which the divided reactors are arranged in parallel at a predetermined spacing. Each of the divided reactors includes a coil unit that is formed of a wound wire and constitutes a part of the coil and a core unit that passes through the coil unit from one end of the coil unit to the other end and constitutes a part of the magnetic core. The core unit has an inner core portion inserted through the coil unit, and outer core portions that protrude from both ends of the coil unit and extend in a direction that intersects the inner core portion.

The invention relates to a housing (20) for electrically isolating and mechanically stabilizing a plug-in coil element (10), wherein the plug-in coil element (10) has a coil (13) having a winding body (30), a first coil end (15) and a second coil end (16), as well as a first connecting element (11) for electrically connecting to a connecting element along a plug-in direction (S), and a second connecting element (12) for electrically connecting along the plug-in direction (S), wherein the winding body (30) has a first winding body end (31) and a second winding body end (32), and the first coil end (15) is formed to be spaced from the first winding body end (31), and the second coil end (16) is formed to be spaced from the second winding body end (32), wherein the first connecting element (11) is connected to the first coil end (15), and the second connecting element (12) is connected to the second coil end (16), moreover having protruding from a housing opening (39) to the outside, a sheathing portion (21) surrounding the first connecting element (11) at least in portions, a first housing portion (22) surrounding the second connecting element (12) at least in portions, a guiding device (23) arranged at an outer surface of the housing (20) for guiding the housing (20) during an assembly in parallel to the plug-in direction (S), and an arresting device (24) arranged at the outer surface for arresting the housing (20) in parallel to the plug-in direction (S).

An apparatus and a tool for installation of a measurement coil. The apparatus includes a tool and a holder. The tool includes a first portion and a second portion at least partially surrounding the first portion. The first portion is configured to receive a conductor and the second portion is configured to hold a measurement coil. The holder is configured to be detachably attached to the tool, wherein the holder is to be employed to install the tool holding the measurement coil onto a conductor. The first portion is configured to snap fit onto the conductor during installation, and the measurement coil at least partially surrounds the conductor when installed.

An apparatus and a tool for installation of a measurement coil. The apparatus includes a tool and a holder. The tool includes a first portion and a second portion at least partially surrounding the first portion. The first portion is configured to receive a conductor and the second portion is configured to hold a measurement coil. The holder is configured to be detachably attached to the tool, wherein the holder is to be employed to install the tool holding the measurement coil onto a conductor. The first portion is configured to snap fit onto the conductor during installation, and the measurement coil at least partially surrounds the conductor when installed.