JP5424382B2 - LC module for induction heating - Google Patents
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- JP5424382B2 JP5424382B2 JP2008329501A JP2008329501A JP5424382B2 JP 5424382 B2 JP5424382 B2 JP 5424382B2 JP 2008329501 A JP2008329501 A JP 2008329501A JP 2008329501 A JP2008329501 A JP 2008329501A JP 5424382 B2 JP5424382 B2 JP 5424382B2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Description
この発明は、誘導加熱装置に用いられる誘導加熱用ＬＣモジュールに関するものである。 The present invention relates to an LC module for induction heating used in an induction heating apparatus.
誘導加熱調理器等において用いられる誘導加熱コイルは、表面が絶縁された銅細線を複数本だけ撚り合わせてなるリッツ線を加熱コイル台上に渦巻き状に巻回することによって構成されている。そして、この誘導加熱コイルにインバータから高周波電流を供給することによって磁界を生じさせて、この誘導コイル上に載置された金属製鍋の誘導加熱を行う（特許文献１参照）。
ところで、誘導加熱コイルによって、抵抗率が低い金属体や非磁性金属体を発熱させるためには、誘導加熱コイルに流れる電流の周波数、誘導加熱コイルの巻き数、誘導加熱コイルに供給する電流を増加する必要があるが、従来の誘導加熱コイルでは損失が大きいため、これ以上の増加には自ずと制限がある。 By the way, in order to heat a metal body or a non-magnetic metal body having a low resistivity by the induction heating coil, the frequency of the current flowing through the induction heating coil, the number of turns of the induction heating coil, and the current supplied to the induction heating coil are increased. However, since the conventional induction heating coil has a large loss, there is a natural limit to further increase.
コイル損失を低減するためには、従来よりも銅細線を細径とし、より一層多くの本数を撚り束ねて断面積を大きくし、表皮効果を低減するとともに、銅細線の相互作用から電流の偏りとなる近接効果を抑制する必要がある。また、コイルは発熱を生じるため、銅細線間の空気層で生じる熱のこもりを排除する必要がある。さらに、銅細線を被覆する絶縁体は、高温に耐用可能な絶縁種のものである必要もある。このように、磁束量が多く、また磁束密度の高い誘導加熱コイルを得ようとすれば、細線化、絶縁材の薄層化、強度及び絶縁性の確保、耐熱化、表皮効果・近接効果の低減を同時に行える誘導加熱コイルが必要となるが、このような誘導加熱コイルは加工が非常に困難で、かつ著しく高価なものとなってしまう。 In order to reduce coil loss, the copper wire is made thinner than before, and a larger number of wires are twisted and bundled to increase the cross-sectional area, reducing the skin effect, and biasing current from the interaction of copper wires. It is necessary to suppress the proximity effect. Further, since the coil generates heat, it is necessary to eliminate heat accumulation generated in the air layer between the thin copper wires. Furthermore, the insulator covering the copper fine wire needs to be of an insulating type that can withstand high temperatures. Thus, if an induction heating coil with a large amount of magnetic flux and a high magnetic flux density is to be obtained, thinning of the wire, thinning of the insulating material, ensuring of strength and insulation, heat resistance, skin effect / proximity effect An induction heating coil that can be simultaneously reduced is required, but such an induction heating coil is very difficult to process and is extremely expensive.
また、誘導加熱コイルを用いて加熱を行う場合は、誘導加熱コイルの他に共振コンデンサを別部品で設ける必要があり、誘導加熱装置の小型化の妨げとなっていた。 Further, when heating is performed using an induction heating coil, it is necessary to provide a resonance capacitor as a separate component in addition to the induction heating coil, which hinders downsizing of the induction heating device.
この発明は、上記従来の課題を解決するためになされたものであって、その目的は、必要な磁束量と電流耐量を有する誘導加熱コイルと必要な容量のコンデンサとを容易に得ることが可能であって、なおかつ、小型で高性能な誘導加熱用ＬＣモジュールを提供することにある。 The present invention has been made to solve the above-described conventional problems, and the object thereof is to easily obtain an induction heating coil having a necessary magnetic flux amount and a current withstand capability and a capacitor having a necessary capacity. And still another object is to provide a small and high performance LC module for induction heating.
そこでこの発明の誘導加熱用ＬＣモジュールは、絶縁基体１２上に渦巻き状に形成されたコイル導体１３の一方端部を、絶縁基体１２の外周端部に沿って形成された端部電極１５に接続し、コイル導体１３の他方端部を、絶縁基体１２の中央部の貫通孔１４の周囲に形成された内側電極１６に接続するとともに、絶縁基体１２を複数積層し、さらに、端部電極１５が設けられた絶縁基体１２の端部及び貫通孔１４の内周に金属溶射をすることにより、積層した絶縁基体１２の各層の端部電極１５を共通接続し、かつ各層の内側電極１６を共通接続して、絶縁基体１２の外周端部の一部及び貫通孔１４の内周部を電極引き出し部とするコイル１を構成するとともに、コイル導体１３が形成された複数の絶縁基体１２・・に板状電極５０・・を形成し複数の板状電極５０・・によりコンデンサ２を構成した誘導加熱用ＬＣモジュールであって、絶縁基体１２は絶縁フィルムであり、コイル導体１３、板状電極５０、端部電極１５及び内側電極１６は蒸着金属であることを特徴としている。 Therefore induction heating LC module of the invention, connect one end of the coil conductor 13 formed in a spiral shape on the insulating substrate 12, the end electrodes 15 formed along the outer edge of the insulating base 12 and, the other end of the coil conductor 13, while connected to the inner electrode 16 formed around the central portion of the through hole 14 of the insulating substrate 12, the insulating base 12 by stacking a plurality addition, the end electrodes 15 By performing metal spraying on the end portion of the provided insulating base 12 and the inner periphery of the through hole 14, the end electrodes 15 of each layer of the laminated insulating base 12 are connected in common and the inner electrodes 16 of the layers are connected in common. In addition , the coil 1 having the electrode lead portion as a part of the outer peripheral end portion of the insulating base 12 and the inner peripheral portion of the through hole 14 is configured, and the plate is attached to the plurality of insulating bases 12 on which the coil conductors 13 are formed. Shaped electrode 50 ... And a induction heating LC module configured capacitor 2 by a plurality of plate-like electrodes 50 ..., the insulating base 12 is an insulating film, the coil conductors 13, plate-shaped electrodes 50, the end electrodes 15 and the inner The electrode 16 is characterized by being a deposited metal .
さらに、貫通孔１４の内周部の周方向で短絡しないように絶縁部１７を設け、この絶縁部１７を除いて金属溶射したことを特徴としている。 Furthermore, an insulating portion 17 is provided so as not to short-circuit in the circumferential direction of the inner peripheral portion of the through hole 14, and metal spraying is performed except for the insulating portion 17.
この発明の誘導加熱用ＬＣモジュールによれば、複数の銅細線を撚り束ねるのではなく、複数のコイル導体を、絶縁基体を介して積層したコイル要素を用いた構造となされていることから、表皮効果、近接効果を低減することができ、このためコイル要素の積層枚数を必要に応じて増加し、直列又は並列接続することが可能となり、この結果、必要な磁束量や電流耐量を有する誘導加熱コイルを容易に提供できる。また、コイル導体の近傍において、空気層の発生を抑制できることから、空気層内への熱の閉じこもりに起因する温度上昇を防止できる。さらに、コイル導体が形成されている絶縁基体上に板状電極を形成することで、板状電極が誘電体となる絶縁基体を介して複数積層されたコンデンサが形成されるから、簡単な構成で誘導加熱コイルとコンデンサとを一体に形成でき、ＬＣモジュールの小型化を図ることができる。 According to the induction heating LC module of the present invention, a structure using a coil element in which a plurality of coil conductors are laminated via an insulating base, instead of twisting and bundling a plurality of copper thin wires, The effect and proximity effect can be reduced, so that the number of coil elements stacked can be increased as necessary, and can be connected in series or in parallel. As a result, induction heating with the required amount of magnetic flux and current resistance can be achieved. A coil can be easily provided. Moreover, since generation | occurrence | production of an air layer can be suppressed in the vicinity of a coil conductor, the temperature rise resulting from the confinement of the heat | fever in an air layer can be prevented. Furthermore, by forming a plate-like electrode on the insulating substrate on which the coil conductor is formed, a capacitor in which a plurality of plate-like electrodes are laminated via an insulating substrate serving as a dielectric is formed. The induction heating coil and the capacitor can be integrally formed, and the LC module can be miniaturized.
また、絶縁基体を絶縁フィルムとし、コイル導体、板状電極、端部電極及び内側電極を金属蒸着によって形成し、また、絶縁基体の端部及び貫通孔の内周に金属溶射によって電極部を形成することにより、容易かつ安価に製造できるのに加え、コイル導体の渦巻きパターン変更が容易に行えることになるので、必要な磁束量、電流耐量を容易に得ることが可能になる。さらに、板状電極の面積を容易に変更できるため、必要な容量のコンデンサを容易に製造することができる。 Also, the insulating substrate is an insulating film, the coil conductor, plate electrode, end electrode and inner electrode are formed by metal vapor deposition, and the electrode portion is formed by metal spraying at the end of the insulating substrate and the inner periphery of the through hole. By doing so, in addition to being able to be manufactured easily and inexpensively, the spiral pattern of the coil conductor can be easily changed, so that it is possible to easily obtain the necessary magnetic flux amount and current withstand capability. Furthermore, since the area of the plate electrode can be easily changed, a capacitor having a required capacity can be easily manufactured.
さらに、貫通孔の内周部の周方向に絶縁部を設け、金属溶射することによって、貫通孔周りでの短絡を防ぐことのできる電極部を容易に形成できる。 Furthermore, by providing an insulating portion in the circumferential direction of the inner peripheral portion of the through hole and performing metal spraying, an electrode portion that can prevent a short circuit around the through hole can be easily formed.
次に、この発明の誘導加熱用ＬＣモジュールの具体的な実施の形態について、図面を参照しつつ詳細に説明する。図１には、誘導加熱コイル１を構成するための第１加熱コイル要素１１と、各コンデンサ２、３を構成するための板状電極５０、５０を示している。これは、平面視概略四角形の絶縁基体１２と、絶縁基体１２上に渦巻き状に形成されたコイル導体１３と、コイル導体１３の外周側のスペース部分の絶縁基体１２上に形成された対の板状電極５０、５０よりなるものである。 Next, specific embodiments of the LC module for induction heating according to the present invention will be described in detail with reference to the drawings. FIG. 1 shows a first heating coil element 11 for configuring the induction heating coil 1 and plate electrodes 50 and 50 for configuring the capacitors 2 and 3. This includes an insulating base 12 having a substantially square shape in plan view, a coil conductor 13 formed in a spiral shape on the insulating base 12, and a pair of plates formed on the insulating base 12 in the space portion on the outer peripheral side of the coil conductor 13. The electrodes 50 and 50 are formed.
上記絶縁基体１２の中央部には貫通孔１４が形成されており、また、コイル導体１３は外周部から内周部にかけて反時計回りに渦巻き状に形成されている。コイル導体１３の一方の端部（外周側の端部の一部）は、絶縁基体１２の特定（図において左側）の辺（側端部）に沿うように形成された端部電極１５に接続されている。また、コイル導体１３の他方の端部（内周側の端部）は、上記貫通孔１４の周囲において、その半周程度の長さに形成された内側電極１６に接続されている。さらに、板状電極５０、５０は、渦巻き状に形成されたコイル導体１３の外周部との間に一定の隙間を有するように、平面視概略四角形の中央部をコイル導体１３の外周部より大なる円形でくり抜くことで２分割した形状に形成され、その双方の板状電極５０、５０の一方端部が、コイル導体１３の一方の端部（外周側の端部の一部）を接続している端部電極１５に接続されている。なお、上記端部電極１５及び内側電極１６はそれぞれ外側電極端子部及び内側電極端子部となる部分である。そしてこの場合、絶縁基体１２は、厚さ数μｍ程度の絶縁フィルムを用い、コイル導体１３及び板状電極５０、５０は、絶縁フィルム上に厚さ数百〜数千Å程度の金属蒸着を施すことによって形成されている。 A through-hole 14 is formed in the central portion of the insulating base 12, and the coil conductor 13 is formed in a spiral shape counterclockwise from the outer peripheral portion to the inner peripheral portion. One end of the coil conductor 13 (a part of the end on the outer peripheral side) is connected to an end electrode 15 formed along a specific side (left side in the drawing) of the insulating base 12 (the side end). Has been. The other end (inner peripheral end) of the coil conductor 13 is connected around the through hole 14 to an inner electrode 16 formed to have a length of about a half circumference. Furthermore, the plate-like electrodes 50, 50 have a central portion of a substantially rectangular shape in plan view larger than the outer peripheral portion of the coil conductor 13 so as to have a certain gap between the outer periphery of the coil conductor 13 formed in a spiral shape. It is formed into a shape divided into two by hollowing out, and one end of both plate electrodes 50, 50 connect one end of coil conductor 13 (a part of the end on the outer peripheral side). Is connected to the end electrode 15. The end electrode 15 and the inner electrode 16 are portions that become an outer electrode terminal portion and an inner electrode terminal portion, respectively. In this case, the insulating base 12 uses an insulating film having a thickness of about several μm, and the coil conductor 13 and the plate-like electrodes 50 and 50 are subjected to metal vapor deposition having a thickness of about several hundred to several thousand mm on the insulating film. It is formed by.
また、この実施形態の誘導加熱用ＬＣモジュールは、第２コイル要素２１を用いるが、この第２コイル要素２１は、図２に示すように、上記第１コイル要素１１を、貫通孔１４を中心に１８０度回転させるとともに、端部電極１５を、コイル導体２３と接続された中央部の端部電極５５と、板状電極５１、５１に接続された両側の端部電極５６、５６とにそれぞれ分割形成して、それぞれが電気的に接続されていない状態としている。なお、各端部電極５５、５６、５６の他は、第１コイル要素１１と同様に、絶縁基体２２、コイル導体２３、貫通孔２４、内側電極２６を有し、かつ略同形状である。 In addition, the induction heating LC module of this embodiment uses the second coil element 21. As shown in FIG. 2, the second coil element 21 centers the first coil element 11 around the through-hole 14. And the end electrode 15 are respectively connected to the center end electrode 55 connected to the coil conductor 23 and the end electrodes 56 and 56 on both sides connected to the plate-like electrodes 51 and 51, respectively. It is divided and formed so that each is not electrically connected. In addition to the end electrodes 55, 56, and 56, similarly to the first coil element 11, the insulating base 22, the coil conductor 23, the through hole 24, and the inner electrode 26 are provided and have substantially the same shape.
次いで、誘導加熱コイル１の必要磁束量、電流耐量に応じて複数枚の第１コイル要素１１と第２コイル要素２１とを準備し、図３及び図４に示すように、これらを各貫通孔１４、２４の軸心が一致するように交互に積層し、その両側から各端部電極１５、５５、５６、５６に金属溶射して各電極部６１、６１、６３、６４を形成し、各端部電極１５、５５、５６、５６を共通接続する。この際、第２コイル要素２１で分割形成されている各端部電極５５、５６、５６間にマスキングを施した状態で、金属溶射することにより非溶射部７０、７０が形成される。従って、各電極部６１、６１、６３、６４はそれぞれの各端部電極１５、５５、５６、５６に個別に形成され、電気的には接続されていない。また、各貫通孔１４、２４の内周部にも金属溶射し、各内側電極１６、２６のそれぞれを共通接続する電極部６２、６２を形成する。この各貫通孔１４、２４への溶射に際しては、周方向に短絡電流が流れること、すなわちワンターン短絡が生じるのを防止するため、各貫通孔１４、２４の内周部の２箇所に、内側電極１６と内側電極２６とを隔てるようにして絶縁部１７、１７を形成しておく。この絶縁部１７、１７は、各貫通孔１４、２４の内周部に切欠を設け、この部分で溶射層が形成されないようにすることによって形成可能である。そして、図４に示すように各電極部６１、６１、６２、６２、６３、６４を形成した後、電気的な結線処理を施し、必要に応じてケースに収納するとともに、樹脂モールドを施して誘導加熱コイル１及び各コンデンサ２、３が一体となった誘導加熱用ＬＣモジュールを製造する。 Next, a plurality of first coil elements 11 and second coil elements 21 are prepared in accordance with the required magnetic flux amount and current withstand capability of the induction heating coil 1, and as shown in FIG. 3 and FIG. 14 and 24 are alternately laminated so that the axial centers thereof coincide with each other, and metal spraying is performed on each end electrode 15, 55, 56, 56 from both sides to form each electrode portion 61, 61, 63, 64, The end electrodes 15, 55, 56, 56 are connected in common. At this time, the non-sprayed portions 70 and 70 are formed by metal spraying in a state where the end electrodes 55, 56 and 56 divided by the second coil element 21 are masked. Accordingly, the electrode portions 61, 61, 63, 64 are individually formed on the respective end electrodes 15, 55, 56, 56, and are not electrically connected. In addition, metal spraying is also performed on the inner peripheral portions of the through holes 14 and 24 to form electrode portions 62 and 62 that commonly connect the inner electrodes 16 and 26, respectively. When spraying the through holes 14 and 24, in order to prevent a short-circuit current from flowing in the circumferential direction, i.e., one-turn short-circuiting, the inner electrode Insulating portions 17 and 17 are formed so as to separate 16 and the inner electrode 26 from each other. The insulating portions 17 and 17 can be formed by providing notches in the inner peripheral portions of the through holes 14 and 24 so that the sprayed layer is not formed at these portions. And after forming each electrode part 61, 61, 62, 62, 63, 64 as shown in FIG. 4, an electrical connection process is performed, it accommodates in a case as needed, and a resin mold is performed. An induction heating LC module in which the induction heating coil 1 and the capacitors 2 and 3 are integrated is manufactured.
上記工程により製造された誘導加熱用ＬＣモジュールは、図５（ａ）に示すように、電極部６１から誘導加熱コイル１と各コンデンサ２、３にそれぞれ枝分かれし、各電極部６２、６３、６４に接続された回路構成となっている。これを、電極部６３と電極部６４とを共通接続して電極部８１を形成することにより、図５（ｂ）に示すように、電極部６２と電極部８１との間に誘導加熱コイル１と各コンデンサ２、３との直列回路が形成される。また、各電極部６２、６３、６４を共通接続することにより、図５（ｃ）に示すように、電極部６１と電極部６２との間に誘導加熱コイル１と各コンデンサ２、３との並列回路が形成される。なお、２つ形成される各コンデンサ２、３のうち、どちらか一方を用いて、誘導加熱コイル１とコンデンサ２若しくはコンデンサ３の直列回路又は並列回路を構成しても良い。 As shown in FIG. 5A, the induction heating LC module manufactured by the above process branches from the electrode portion 61 into the induction heating coil 1 and the capacitors 2 and 3 respectively, and the electrode portions 62, 63, and 64 are branched. The circuit configuration is connected to the. By forming the electrode part 81 by connecting the electrode part 63 and the electrode part 64 in common, the induction heating coil 1 is interposed between the electrode part 62 and the electrode part 81 as shown in FIG. And a series circuit of the capacitors 2 and 3 are formed. Further, by connecting the electrode portions 62, 63, 64 in common, as shown in FIG. 5C, the induction heating coil 1 and the capacitors 2, 3 are connected between the electrode portion 61 and the electrode portion 62. A parallel circuit is formed. In addition, you may comprise the series circuit or parallel circuit of the induction heating coil 1 and the capacitor | condenser 2 or the capacitor | condenser 3 using either one of each capacitor | condenser 2 and 3 formed.
上記誘導加熱用ＬＣモジュールによれば、誘導加熱コイル１を各コイル導体１３、２３に高周波電流を流すことにより磁束が発生し、誘導加熱コイル１の上部に配置した金属製鍋等を加熱できる。この場合、各コイル導体１３、２３の厚さを数百〜数千Åとすることによって、表皮効果が低減できるのに加えて、数μｍの各絶縁基体（絶縁フィルム）１２、２２を用いることによって小型化が可能となる。また、各コイル要素１１、２１の形成作業、積層作業、各電極部６１、６１、６２、６２、６３、６４の形成作業が容易であることから低コストに構成可能な誘導加熱コイル１を提供できる。さらに、各コイル導体１３、２３の渦巻き数や幅、及び各コイル要素１１、２１の積層枚数を変更することによって、必要な磁束量や電流耐量に容易に合わせることができ、小型、安価、高性能な誘導加熱コイル１を実現できる。特に、各コイル導体１３、２３を金属蒸着法によって形成する場合には、非蒸着用オイルを付着させた絶縁フィルム上に金属を蒸着するが、このような方法によれば、非蒸着用オイルを塗布するための塗布ロールを変更することによって、渦巻き数、幅を変更できるので、必要な磁束量、電流耐量が容易に得られることになる。さらに、各コイル要素１１、２１を所定枚数だけ積層して単位コイルを構成し、この単位コイルを複数個積層し、かつ各単位コイルを直列又は並列接続することにより必要な磁束量、電流耐量が容易に得られる。 According to the LC module for induction heating, magnetic flux is generated by passing a high-frequency current through the coil conductors 13 and 23 through the induction heating coil 1, and a metal pan or the like disposed on the top of the induction heating coil 1 can be heated. In this case, by making the thickness of each coil conductor 13, 23 to several hundred to several thousand Å, the skin effect can be reduced, and in addition, each insulating substrate (insulating film) 12, 22 μm is used. The size can be reduced. In addition, the induction heating coil 1 that can be configured at a low cost is provided because the formation work of each coil element 11, the lamination work, and the formation work of each electrode part 61, 61, 62, 62, 63, 64 are easy. it can. Furthermore, by changing the number and width of the spirals of the coil conductors 13 and 23 and the number of stacked layers of the coil elements 11 and 21, it is possible to easily match the required amount of magnetic flux and current withstand capability. A high-performance induction heating coil 1 can be realized. In particular, when each of the coil conductors 13 and 23 is formed by a metal vapor deposition method, a metal is vapor-deposited on the insulating film to which the non-vapor deposition oil is attached. Since the number of spirals and the width can be changed by changing the coating roll for coating, the necessary magnetic flux amount and current withstand capability can be easily obtained. Furthermore, a predetermined number of coil elements 11 and 21 are stacked to form a unit coil, a plurality of unit coils are stacked, and the unit coils are connected in series or in parallel, so that the required magnetic flux amount and current withstand capability are increased. Easy to get.
また、各コイル導体１３、２３が形成された各絶縁基体１２、２２に、各板状電極５０、５１を形成して、複数積層することによって各コンデンサ２、３が形成されるから、簡単な構成で誘導加熱コイル１と各コンデンサ２、３とを一体に備えた誘導加熱用ＬＣモジュールを容易に生成でき、従来別部品で設けられていた共振コンデンサが不要となり、誘導加熱装置の小型化を図ることができる。 Moreover, since each plate-like electrode 50 and 51 is formed in each insulation base | substrate 12 and 22 in which each coil conductor 13 and 23 was formed, and each capacitor | condenser 2 and 3 is formed by laminating | stacking, it is easy. The induction heating LC module having the induction heating coil 1 and the capacitors 2 and 3 integrated with each other can be easily generated, eliminating the need for a resonance capacitor provided as a separate component in the past, and reducing the size of the induction heating device. Can be planned.
以上にこの発明の誘導加熱用ＬＣモジュールの具体的な実施の形態について説明したが、この発明は上記実施の形態に限定されるものではなく、この発明の範囲内で種々変更して実施することが可能である。例えば、板状電極の形状は、上記例示に限らず、適宜変更しても良い。また、絶縁基体上に板状電極を形成して複数積層してなるコンデンサを補助するため、コンデンサを別途設けて誘導加熱装置を構成しても良い。また、上記では、２つのコンデンサを構成しているが、３つ以上の複数のコンデンサを構成しても良い。また、絶縁基体を介して対向する板状電極を用いて直列コンデンサを構成することも可能であるが、このような構成を採用する場合、薄い絶縁基体であってもコンデンサの耐電圧性を確保できるＬＣモジュールを得ることができる。 The specific embodiment of the LC module for induction heating according to the present invention has been described above. However, the present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. Is possible. For example , the shape of the plate electrode is not limited to the above example, and may be changed as appropriate. Further, in order to assist a capacitor formed by laminating a plurality of plate electrodes on an insulating substrate, an induction heating device may be configured by separately providing a capacitor. In the above description, two capacitors are formed, but three or more capacitors may be formed. It is also possible to configure a series capacitor using plate-like electrodes facing each other through an insulating substrate. When such a configuration is adopted, the withstand voltage of the capacitor is ensured even with a thin insulating substrate. LC module can be obtained.
１・・コイル、２・・コンデンサ、１２・・絶縁基体、１３・・コイル導体、１４・・貫通孔、１５・・端部電極、１６・・内側電極、１７・・絶縁部、５０・・板状電極 1 .. Coil, 2 .. Capacitor, 12 .. Insulating substrate, 13 .. Coil conductor, 14 .. Through hole, 15 .. End electrode, 16 .. Inner electrode, 17. Plate electrode
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