JP2007335526A - Common mode choke coil, outlet plug, outlet adapter, table tap, and wiring adapter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a common mode choke coil capable of preventing the increase of normal mode impedance, while suppressing the deterioration of balance due to the increase of coupling capacitance between two parallel lines. <P>SOLUTION: The common mode choke coil is obtained by winding a prescribed winding wire around a winding frame on a bobbin including a hollow part where a toroidal core is put through. The prescribed winding wire is wound in parallel around division winding frames which are obtained by division with the use of division walls for dividing the winding frame of the bobbin into not less than two areas. Not less than one notched parts for allowing the winding wire wound around one division winding frame to be set in the adjacent division winding frame are respectively arranged in the division walls. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a common mode choke coil used in a communication system, and is particularly suitable for being disposed in a key point such as a communication device that performs power line communication, a power supply device used for power line communication, or a power line or communication line. The present invention relates to a common mode choke coil and an outlet plug, an outlet adapter, a table tap, and a wiring adapter having the common mode choke coil.

  Conventionally, there is a common mode choke coil wound by a winding method called “bifilar winding” in which two conductive wires are wound in parallel in the same direction (for example, Non-Patent Document 1). In the common mode choke coil wound by “bifilar winding” shown in Non-Patent Document 1, two conductive wires are wound directly around the toroidal core, and due to the impedance increasing effect on the common mode, Common mode noise can be reduced.

  Non-Patent Document 1 also includes a common mode choke coil of a type in which a bobbin around which a conductive wire is wound is mounted on a toroidal core. However, the common mode choke coil of the type using the bobbin shown in Non-Patent Document 1 is wound in a winding method called “cancel winding” in which two conductive wires are individually wound in different directions. ing. Note that this winding method called “cancellation winding” is said to have a noise reduction effect for both common mode noise and normal mode noise.

TAIYO YUDEN Co., Ltd. common mode choke coil CM08RA (bifilar winding), TLF9UB (cancellation winding), “ONLINE”, “June 2, 2006 search”, Internet <URL: http: // www2. yuden. co. jp / hp / com / catalog / PDF_CATALOG / PDF / JETLDD1. PDF>

  However, in the case of a “bifilar winding” common mode choke coil using a conventional toroidal core, if the number of turns of two parallel wires is increased in order to increase the common mode impedance, the adjacent two parallel wires are close to each other. There was a problem that the coupling capacity between the lines increased and the balance decreased.

  In addition, in the case of a “cancel winding” common mode choke in which a conductive pattern is wound around a bobbin line by line, there is a problem in that normal mode impedance increases and balance decreases.

  The present invention has been made in view of the above, and provides a common mode choke coil that does not cause an increase in normal mode impedance while suppressing a decrease in balance due to an increase in coupling capacitance between two parallel wires. An object of the present invention is to provide an outlet plug, an outlet adapter, a table tap, and a wiring adapter using the common mode choke coil.

  In order to solve the above-described problems and achieve the object, a common mode choke coil according to the present invention is configured by winding a predetermined winding around a bobbin portion provided with a hollow portion through which a toroidal core is inserted. In the common mode choke coil, the bobbin includes a dividing wall that divides the winding frame into two or more regions, and the predetermined winding is wound in parallel on the divided winding frame divided by the dividing wall. It is characterized by being wound by.

  According to the common mode choke coil of the present invention, the dividing wall that divides the winding frame portion on the bobbin into two or more regions is provided, and a predetermined winding is parallel to the dividing winding frame portion divided by the dividing wall. Since it is configured to be wound by winding, it is possible to suppress an increase in normal mode impedance while suppressing a decrease in balance caused by the coupling capacitance between the windings.

  Hereinafter, preferred embodiments of a common mode choke coil, an outlet plug, an outlet adapter, a wiring adapter and a table tap according to the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by the following embodiment.

Embodiment 1 FIG.
FIG. 1-1 is a diagram (front view) illustrating a schematic configuration of a common mode choke coil using the divided bobbin according to the first embodiment of the present invention, and FIG. It is the figure (side view) seen from.

  As shown in FIGS. 1-1 and 1-2, the common mode choke coil of this embodiment includes a terminal 1, a conductive pattern 2, a ferrite core 3, and a divided bobbin 4. Here, a hollow portion 4a is provided at the center of the divided bobbin 4, and a toroidal (annular) ferrite core 3 is inserted into the hollow portion 4a. The divided bobbin 4 is provided with one or more divided walls 5. The dividing wall 5 is provided in order to reduce the coupling capacitance with the adjacent conductive pattern 2 when a plurality of conductive patterns 2 having both ends serving as terminals 1 are wound in parallel. Specifically, in the divided bobbin 4 attached to the ferrite core 3, the end wall and the divided wall 5, or the winding frame portion (hereinafter referred to as “divided winding frame portion”) 4 b divided by the divided walls 5. The conductive pattern 2 is wound around the portion in a plurality of turns by parallel winding, and both ends of the conductive pattern are terminals 1.

  In addition, as the conductive pattern 2 wound around the divided winding frame portion 4b, a two-wire type such as a single-phase two-wire type, a three-wire type such as a three-phase three-wire type, and a three-phase four-wire type are used. Various types such as a four-wire type such as an equation can be applied. The ferrite core 3 around which the conductive pattern 2 is wound may be an integral core or a split core such as a split core.

  2 and 3 are diagrams illustrating an example different from FIG. 1 of the mounting relationship between the divided bobbin 4 and the ferrite core 3 according to the first embodiment. That is, the divided bobbin 4 and the ferrite core 3 have a horizontal positional relationship as shown in FIG. 1-1, a vertical positional relationship as shown in FIG. 2, or any other positional relationship (see FIG. 3). It doesn't matter.

  4 and 5 are diagrams showing an example of the case where the ferrite core 3 according to the first exemplary embodiment of the present invention is configured with a split core. The shape of the ferrite core 3 when the split cores are combined to form a toroidal shape is, for example, as shown in FIG. 4, a combination of a U-type ferrite core 6 and an I-type ferrite core 7 (UI-type core), or FIG. As shown in FIG. 5, the E-type ferrite cores 8 can be combined (EE-type core). In addition to these, combinations of U-type ferrite cores and combinations of E-type ferrite cores and I-type ferrite cores are also conceivable, and any combination may be used. When using split cores, it is preferable that the bonding surfaces of the cores are in contact with each other without any gap. In this case, including a method of bonding using a resin or a method of fixing using a metal fitting, etc. Any method may be used.

  As described above, according to this embodiment, the common mode choke coil of the multi-line parallel winding is configured using the divided bobbin having the divided winding frame portion divided by the dividing wall. Therefore, it is possible to easily and inexpensively manufacture a common mode choke coil that does not increase the normal mode impedance while suppressing a decrease in the balance caused by the coupling capacitance.

Embodiment 2. FIG.
FIG. 6 is a diagram showing a schematic configuration of the common mode choke coil according to the second embodiment of the present invention. Here, FIG. 6 corresponds to the side view shown in FIG. 1-2, and is a common mode choke coil configured by winding a two-wire conductive pattern 2 around a divided bobbin 4 divided by a dividing wall 5. Is shown. The common mode choke coil according to this embodiment is characterized in that, as shown in FIG. 6, the two-wire conductive pattern 2 is wound in parallel on the divided frame portion 4 b of the divided bobbin 4 provided in the ferrite core 3. It is devised so that the adjacent portions of the conductive pattern 2 are separated by the dividing wall 5 and the coupling capacity is reduced.

  Note that the shape of the ferrite core 3 and the mounting procedure of the divided bobbin 4 and the ferrite core 3 in the second embodiment are the same as those in the first embodiment, and the description thereof is omitted.

  Similarly to the first embodiment, the conductive pattern 2 wound around the divided winding frame portion 4b is a two-wire type (single-phase two-wire type), three-wire type (single-phase three-wire type). Three-phase three-wire system, etc.), a four-wire type (three-phase four-wire system, etc.) or other types can be applied.

  As described above, according to this embodiment, the divided bobbin having the divided winding frame portion is used to form a multi-line parallel winding common mode choke coil and the conductive pattern wound around the divided winding frame portion. In addition to the effect of the first embodiment, since the increase of the coupling capacitance between adjacent conductive patterns can be suppressed, the effect of further suppressing the decrease in the balance can be obtained. .

Embodiment 3 FIG.
FIG. 7 is a diagram illustrating a schematic configuration of the common mode choke coil according to the third embodiment of the present invention. The common mode choke coil shown in FIG. 7 is characterized in that a notch 9 is provided in the dividing wall 5 in order to reduce capacitive coupling between the wound conductive pattern 2 and the adjacent conductive pattern 2. . In addition, by providing one or more such cutout portions 9, it is possible to wind the conductive pattern 2 that is wound in parallel with the portion of the divided winding frame portion 4b without overlapping the adjacent conductive pattern 2. Become.

  The common mode choke coil shown in FIG. 7 is a common mode choke coil configured by winding a four-wire conductive pattern 2 around a divided bobbin 4 divided by a divided wall 5 provided with a notch 9. However, when the two-wire conductive pattern 2 is wound, the configuration is as shown in FIG.

  As described above, according to this embodiment, since one or more (one or more) cutouts are provided on the dividing wall of the divided bobbin, the conductive patterns are adjacent when they are wound in parallel. A structure for suppressing the coupling between the conductive patterns is provided, and the performance of the common mode choke coil can be enhanced.

Embodiment 4 FIG.
FIG. 9 is a diagram showing a schematic configuration of the common mode choke coil according to the fourth embodiment of the present invention. The common mode choke coil shown in FIG. 9 is characterized in that the dividing wall 5 of the dividing bobbin 4 is spirally formed in the winding width direction of the conductive pattern. According to the spirally formed dividing wall 5, the divided winding frame portion 4 b that winds the conductive pattern 2 is continuously formed along the dividing wall 5 without being divided by the dividing wall 5. . Therefore, by winding the conductive pattern 2 around the divided winding frame portion 4b in parallel, the adjacent conductive patterns 2 are separated by the dividing wall without providing the notch portion 9 as in the third embodiment. Can be wound.

  The common mode choke coil shown in FIG. 9 is a common mode choke coil configured by winding a four-wire conductive pattern 2 around a divided bobbin 4 having a spirally formed dividing wall 5. When the two-wire conductive pattern 2 is wound, the configuration is as shown in FIG.

  As described above, according to this embodiment, the dividing wall of the dividing bobbin is formed in a spiral shape in the winding width direction of the conductive pattern, so that it is cut into the dividing wall as in the fourth embodiment. There is no need to provide a notch. For this reason, the work process at the time of parallel-winding a conductive pattern to a division | segmentation bobbin can be simplified and shortened. In addition, since the divided winding frame portion for winding the conductive pattern is continuously formed along the divided wall without being divided by the divided wall, the structural symmetry between each conductive pattern is prevented from being broken, and the conductive pattern is conductive. The balance between the lines of the pattern is maintained, and the performance of the common mode choke coil can be improved.

Embodiment 5 FIG.
FIG. 11 is a diagram illustrating a schematic configuration of the outlet plug according to the fifth embodiment in which the common mode choke coil illustrated in the first to fourth embodiments is incorporated. In FIG. 11, the common mode choke coil 10 shown in the first to fourth embodiments is built in the housing portion 12 of the outlet plug 11 body. A terminal (or lead wire) on one end side of the common mode choke coil 10 is connected to a communication line 13 connected to a communication device (hereinafter referred to as “power line communication device”) that performs power line communication, and a terminal on the other end side. (Or the lead wire) is connected to a plug terminal 14 connected to a power line or a communication line.

  Here, power line communication will be briefly described. Power line communication is a communication technology that uses an existing medium-voltage distribution line or low-voltage distribution line as a communication path. In addition, the system configuration in power line communication includes a medium-voltage power line communication device master unit (including a low-voltage power line communication master device), a low-voltage relay device, a home slave device, and the like. Communication data communicated in the power line communication is transmitted between the medium-voltage power line communication device parent device and the low-voltage relay device or in-home child device. In addition, by providing the intermediate-voltage power line communication device base unit with an interface function with the upper network, for example, Internet communication is possible in the power line communication system.

  Next, the operation of the outlet plug 11 shown in FIG. 11 will be described. A communication signal output from a power line communication device (not shown) is coupled to a power line or a communication line connected to the plug terminal 14 via the communication line 13 via the common mode choke coil 10 built in the outlet plug 11. The

  At this time, since the common mode current generated between the communication line 13 and the ground conductor is reduced by the common mode choke coil 10 when passing through the common mode choke coil 10, it passes through the plug terminal 14 first. Common mode current can be reduced. Further, it is possible to reduce the common mode current generated due to the unbalance of the wiring system.

  As shown in FIG. 12, if the communication line 13 is twisted and arranged, the existing common mode current can be reduced without impairing the balance. As a result, it is possible to further reduce the common mode current passing through the plug terminal 14 first.

  As shown in FIG. 13, the communication line 13 may be two parallel lines, and the conductive pattern 2 wound around the common mode choke coil may be twisted instead. Further, both the communication line 13 and the conductive pattern 2 may be twisted.

  As described above, according to this embodiment, since the common mode choke coil shown in Embodiments 1 to 4 is built in the outlet plug, the connection between the power line communication device and the existing power line is It is possible to easily carry out through the outlet plug and reduce the common mode current.

Embodiment 6 FIG.
FIG. 14: is a figure which shows schematic structure of the outlet adapter concerning Embodiment 6 which incorporates the common mode choke coil shown in Embodiment 1-4. The outlet adapter 15 shown in FIG. 14 is characterized in that a jack terminal 16 is provided on the communication line 18 side of the common mode choke coil 10 in a configuration equivalent to the outlet plug 11 shown in FIG. By providing such a jack terminal 16, for example, an outlet plug 17 connected to a power line communication device (not shown) can be inserted into the jack terminal 16. That is, by using the outlet adapter of this embodiment, the common mode current flowing between the power line communication device and the power line and flowing out to the power line side, or the common mode current generated due to the unbalance of the wiring system is reduced. It becomes possible to make it.

  As described above, according to this embodiment, the common mode choke coil shown in Embodiments 1 to 4 is built in the outlet adapter, and the jack terminal for connecting the plug terminal of the outlet plug is provided. Therefore, in addition to the effects of the fifth embodiment, even when a power line communication device that does not include a common mode choke coil is connected, the common mode current from the power line communication device can be reduced.

  In the outlet adapter according to this embodiment, as in the fifth embodiment, both the signal line side and the power line side wiring or either one of the common mode choke coil 10 can be configured by a twisted pair. It is.

Embodiment 7 FIG.
FIG. 15 is a diagram illustrating a schematic configuration of a table tap according to a seventh embodiment in which the common mode choke coil illustrated in the first to fourth embodiments is incorporated. In the table tap 19 shown in FIG. 15, an inductor element 23 is provided on a branch line from a conductive line connecting a common mode choke coil 10 and a connection terminal 21 with a connection terminal 20 for connecting an electric device (for example, home appliance) other than the power line communication device. Is provided. By providing such a connection terminal 22, the outlet for the power line communication device can be shared for electric equipment other than the power line communication device, and an unnecessary increase in outlet plugs and outlet adapters can be suppressed. It becomes. In FIG. 15, the connection terminal 20 for connecting the power line communication device and the connection terminal 21 for connecting the power line may be configured as an outlet plug or an outlet jack.

  As described above, according to this embodiment, since the common mode choke coil shown in Embodiments 1 to 4 is built in the outlet plug, in addition to the effects of Embodiment 5, power line communication The outlet for the apparatus can be shared for electric equipment other than the power line communication apparatus, and flexibility and simplicity in connecting the electric equipment other than the power line communication apparatus or the power line communication apparatus to the power line can be ensured.

  Also in the table tap of this embodiment, as in the fifth and sixth embodiments, the signal line side and / or the power line side wiring in the common mode choke coil 10 or either one of the wirings is configured by a twisted pair. Is also possible.

Embodiment 8 FIG.
FIG. 16 is a diagram illustrating a schematic configuration of the wiring adapter according to the eighth embodiment in which the common mode choke coil shown in the first to fourth embodiments is incorporated. In FIG. 16, the wiring adapter 24 incorporates the common mode choke coil 10 shown in the first to fourth embodiments, and the connection between the power line communication device (not shown) and the common mode choke coil 10 connects the power line communication device. The conductive line 25 and the communication line 26 connecting the common mode choke coil 10 are connected by a transformer coupling. On the other hand, on the power line side, the common mode choke coil 10 and a power line (not shown) are connected via a communication line 27 in an AC manner.

  In the fifth and sixth embodiments, the case where the current based on the commercial power and the current based on the communication signal flow in the outlet plug 11 or the outlet adapter 15 has been described. However, in the embodiment shown in FIG. The case where only a communication signal flows through the line 25 is assumed, and attachment to a place where the outlet plug 11 or the outlet adapter 15 is not possible is possible.

  As described above, according to this embodiment, since the common mode choke coil shown in Embodiments 1 to 4 is built in the wiring adapter, there is no power line nearby, and conversely, the power line communication apparatus When there is a communication line, the wiring adapter can be used to connect to these power line communication devices and communication lines, so that the flexibility, simplicity and economy of wiring can be ensured.

  In the wiring adapter of this embodiment as well, both the signal line side and / or power line side wirings in the common mode choke coil 10 or any one of the wirings are configured by twisted pairs, as in the fifth to seventh embodiments. Is also possible.

Embodiment 9 FIG.
The common mode choke coil shown in the first to fourth embodiments of the present invention may be used as a noise filter for a power supply or the like. FIG. 17 is a diagram showing an embodiment according to the ninth embodiment in which the common mode choke coil shown in the first to fourth embodiments is arranged on the input side of a switching power supply provided in an electronic device or the like. In the figure, the AC input input from the two-pole AC power plug 28 passes through the across-the-line capacitor (X capacitor) 29 and passes through the common mode choke coil 10 shown in the first to fourth embodiments. Further, it is supplied to the switching power supply 32 via the line bypass capacitor 30 and the normal mode choke coil 31. The switching power supply 32 converts an AC input into a DC output and supplies necessary power to an electronic circuit connected to a subsequent stage.

  In the case of a circuit configuration as shown in FIG. 17, common mode noise generated from the switching power supply 32 is blocked by the common mode choke coil 10 shown in the first to fourth embodiments and transmitted from the AC power plug 28 to the power line side. Possible common mode current can be reduced. The embodiment shown in FIG. 17 is merely an example for explaining the ninth embodiment, and various circuit configurations into which a common mode choke coil is inserted can be adopted.

  As described above, according to this embodiment, the common mode choke coil shown in Embodiments 1 to 4 is inserted, for example, on the input side of an electronic device having a switching power supply. It is possible to reduce the common mode current that may be transmitted to the power line side.

Embodiment 10 FIG.
FIG. 18 is a diagram showing an embodiment according to the tenth embodiment in which the common mode choke coil shown in the first to fourth embodiments is arranged on the output side of a switching power supply provided in an electronic device or the like. In the figure, an AC input inputted from an AC power supply (not shown) is converted into a DC output by a switching power supply 32, and the converted DC output is converted into the common mode choke coil 10 shown in the first to fourth embodiments. Or, it is supplied to an electronic circuit connected to a subsequent stage through a normal mode choke coil 31 and an across the line capacitor (X capacitor) 29.

  In the case of the circuit configuration as shown in FIG. 18, common mode noise generated from the switching power supply 32 is blocked by the common mode choke coil 10 shown in the first to fourth embodiments, and may leak to its own electronic circuit side. A certain common mode current can be reduced. The embodiment shown in FIG. 18 is merely an example for explaining the tenth embodiment, and various circuit configurations into which a common mode choke coil is inserted can be adopted.

  In the circuit configuration shown in FIG. 18, the common mode choke coil 10 described in Embodiments 1 to 4 is connected to the output side of the switching power supply 32 as a configuration for reducing common mode noise leaking to the electronic circuit side. However, when common mode current leaks to the input side of the switching power supply 32, it is preferable to mount these common mode choke coils 10 on the input side.

  As described above, according to this embodiment, the common mode choke coil shown in Embodiments 1 to 4 is inserted, for example, on the output side of an electronic device having a switching power supply. It becomes possible to reduce the common mode current that may leak to the electronic circuit side.

  As described above, the present invention includes a communication device that performs power line communication, a power supply device that is used for power line communication, or a common mode choke coil that is disposed at a key point such as a power line or a communication line, and the common mode choke coil. Suitable for outlet plugs, outlet adapters, and table taps.

It is a front view which shows schematic structure of the common mode choke coil using the division | segmentation bobbin concerning Embodiment 1 of this invention. It is a side view which shows schematic structure of the common mode choke coil using the division | segmentation bobbin concerning Embodiment 1 of this invention. FIG. 3 is a diagram showing an example different from FIG. 1 of the mounting relationship between the divided bobbin and the ferrite core according to the first embodiment. FIG. 3 is a diagram showing an example different from FIGS. 1 and 2 of the mounting relationship between the divided bobbin and the ferrite core according to the first embodiment. It is a figure which shows an example in case the ferrite core concerning Embodiment 1 of this invention is comprised with a split-type core. It is a figure which shows an example different from FIG. 4 at the time of comprising the ferrite core concerning Embodiment 1 of this invention with a split-type core. It is a figure which shows schematic structure of the common mode choke coil (two wire parallel winding) concerning Embodiment 2 of this invention. It is a figure which shows schematic structure of the common mode choke coil (4-wire parallel winding, with a notch part) concerning Embodiment 3 of this invention. It is a figure which shows schematic structure of the common mode choke coil (2-wire parallel winding, with a notch part) concerning Embodiment 3 of this invention. It is a figure which shows schematic structure of the common mode choke coil (4-wire parallel winding, spiral division | segmentation wall) concerning Embodiment 4 of this invention. It is a figure which shows schematic structure of the common mode choke coil (2 wire parallel winding spiral division | segmentation wall) concerning Embodiment 4 of this invention. It is a figure which shows schematic structure of the outlet plug concerning Embodiment 5 which incorporates the common mode choke coil shown in Embodiments 1-4. It is a figure which shows the other embodiment different from FIG. 11 of the outlet plug concerning Embodiment 5. FIG. It is a figure which shows the other embodiment different from FIG. 11 and FIG. 12 of the outlet plug concerning Embodiment 5. FIG. FIG. 7 is a diagram showing a schematic configuration of an outlet adapter according to a sixth embodiment in which the common mode choke coil shown in the first to fourth embodiments is incorporated. It is a figure which shows schematic structure of the table tap concerning Embodiment 7 which incorporates the common mode choke coil shown in Embodiments 1-4. It is a figure which shows schematic structure of the wiring adapter concerning Embodiment 8 which incorporates the common mode choke coil shown in Embodiments 1-4. It is a figure which shows the embodiment concerning Embodiment 9 which has arrange | positioned the common mode choke coil shown in Embodiment 1-4 to the input side of the switching power supply with which an electronic device etc. are equipped. It is a figure which shows the embodiment concerning Embodiment 10 which has arrange | positioned the common mode choke coil shown in Embodiment 1-4 to the output side of the switching power supply with which an electronic device etc. are equipped.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Terminal 2 Conductive pattern 3, 6, 7, 8 Ferrite core 4 Divided bobbin 4a Hollow part 4b Divided winding frame part 5 Divided wall 9 Notch part 10 Common mode choke coil 11, 17 Outlet plug 12 Case parts 13, 18, 26, 27 Communication line 14 Plug terminal 15 Outlet adapter 16 Jack terminal 19 Table tap 20, 21, 22 Connection terminal 23 Inductor element 24 Wiring adapter 25 Conductive line 28 Power plug 29 Across the line capacitor 30 Line bypass capacitor 31 Normal mode choke coil 32 Switching power supply

Claims (8)

In the common mode choke coil formed by winding a predetermined winding around a bobbin on a bobbin provided with a hollow portion through which the toroidal core is inserted,
The bobbin includes a dividing wall that divides its own reel portion into two or more regions,
The common mode choke coil, wherein the predetermined winding is wound in a parallel winding around the divided winding frame portion divided by the dividing wall.   2. The common mode choke coil according to claim 1, wherein the predetermined winding is two wires, and the two wire windings are wound around the divided winding frame portion of the bobbin by bifilar winding. 3.   3. One or more notch portions are provided in each of the divided walls for passing a winding wound around one divided winding frame portion to an adjacent divided winding frame portion. The common mode choke coil described in 1.   The common mode choke coil according to claim 1, wherein the dividing wall is formed in a spiral shape in a winding width direction of the predetermined winding. The common mode choke coil according to any one of claims 1 to 4,
A plug terminal connected to a lead wire on one end side of the common mode choke coil;
An outlet plug characterized by comprising. An outlet plug according to claim 5;
An outlet jack connected to a lead wire on the other end side of the common mode choke coil provided in the outlet plug;
An outlet adapter characterized by comprising The common mode choke coil according to any one of claims 1 to 4,
A first connection terminal connected to a lead wire on one end side of the common mode choke coil;
A second connection terminal connected to a lead wire on the other end side of the common mode choke coil; and a branch line from a conductive line connecting the first or second connection terminal and the common mode choke coil. A third connection terminal provided via an inductor element;
A table tap characterized by comprising. The common mode choke coil according to any one of claims 1 to 4,
A connection end that is transformer-coupled to a lead wire at either end of the common mode choke coil;
A wiring adapter characterized by comprising:

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