JP6128924B2 - High frequency noise countermeasure power supply circuit - Google Patents

High frequency noise countermeasure power supply circuit Download PDF

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JP6128924B2
JP6128924B2 JP2013083267A JP2013083267A JP6128924B2 JP 6128924 B2 JP6128924 B2 JP 6128924B2 JP 2013083267 A JP2013083267 A JP 2013083267A JP 2013083267 A JP2013083267 A JP 2013083267A JP 6128924 B2 JP6128924 B2 JP 6128924B2
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健二 廣瀬
健二 廣瀬
尚人 岡
尚人 岡
佐々木 雄一
雄一 佐々木
大橋 英征
英征 大橋
徹 醍醐
徹 醍醐
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Mitsubishi Electric Corp
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Description

本発明は、機器の電源配線上において、高周波ノイズのバイパス用に用いられるコンデンサが実装された高周波ノイズ対策用電源回路に関するものである。   The present invention relates to a high-frequency noise countermeasure power supply circuit in which a capacitor used for bypassing high-frequency noise is mounted on a power supply wiring of a device.

コンデンサは電子回路においてノイズ対策部品として重要な役割を果たしている。例えば、スイッチング電源装置の電源入力及び出力の正極と負極の導体配線(電源配線)間には、スイッチング動作による高周波ノイズをバイパスするために、図8に示すようにコンデンサ2が実装される。
図8は、導体配線(電源配線)1aと1b間にコンデンサ2が接続された部分の回路図である。コンデンサは何らかの原因で故障すると、コンデンサの種類によっては導通状態、つまりショートモード故障が起きることがある。電源配線の線間に高周波ノイズのバイパス用としてコンデンサを配置する場合、このコンデンサがショートモード故障した場合には電源配線間がショートし、この電源配線に接続された機器が停止あるいは故障する可能性がある。
Capacitors play an important role as noise suppression components in electronic circuits. For example, a capacitor 2 is mounted between the power supply input and output positive and negative conductor wires (power supply wires) of the switching power supply device as shown in FIG. 8 in order to bypass high-frequency noise caused by the switching operation.
FIG. 8 is a circuit diagram of a portion where the capacitor 2 is connected between the conductor wiring (power supply wiring) 1a and 1b. When a capacitor fails for some reason, a conduction state, that is, a short mode failure may occur depending on the type of the capacitor. When a capacitor is placed between the power supply wiring lines to bypass high-frequency noise, if this capacitor fails in the short mode, the power supply wiring may be short-circuited, and the equipment connected to this power supply wiring may stop or fail. There is.

この可能性を低減する目的で、図9、図10、図11、図12に示すようにコンデンサ2個を直列に接続することが行われている。図9は、導体配線1aと1b間にコンデンサ2aと2bが導体配線1cを介して直列接続されている部分の回路図である。図10、図11、図12は、絶縁基板6上において、導体配線1aと1b間にコンデンサ2aと2bの2個が導体配線1cを介して直列接続されている状態を示す平面図である。この構成では、直列接続された2個のコンデンサが同時に故障する確率は非常に小さい。それ故、コンデンサのショートモード故障に対して、導体配線1aと1b間がショートする可能性を低減できる。   In order to reduce this possibility, two capacitors are connected in series as shown in FIG. 9, FIG. 10, FIG. 11, and FIG. FIG. 9 is a circuit diagram of a portion in which capacitors 2a and 2b are connected in series via conductor wiring 1c between conductor wirings 1a and 1b. 10, 11 and 12 are plan views showing a state in which two capacitors 2a and 2b are connected in series between the conductor wirings 1a and 1b via the conductor wiring 1c on the insulating substrate 6. FIG. In this configuration, the probability that two capacitors connected in series fail simultaneously is very small. Therefore, it is possible to reduce the possibility of short-circuiting between the conductor wirings 1a and 1b due to a short mode failure of the capacitor.

特開2004-241506号公報(特許文献1)には、電源の線間に高周波ノイズバイパス用としてコンデンサを配置する場合に、線間ショート防止を目的にコンデンサ2個を直列接続して使用する構成が示されている。
コンデンサを直列に接続する場合、例えば表面実装タイプのコンデンサの持つESL(等価直列インダクタンス。通常は0.5nH〜1nH)と、コンデンサ間を接続する配線のインダクタンス(長さ1mmで約1nH)がコンデンサの個数分だけ加算される。例えば、2個の表面実装コンデンサを長さ5mmの配線で直列接続する場合、全体の実効インダクタンスは6nH程度となり、コンデンサ1個の場合に比べて実効インダクタンスが10倍程高くなる。このように、コンデンサを複数直列に接続すると実効インダクタンスが高くなり、高周波ノイズのバイパス効果が減少する。
Japanese Patent Laying-Open No. 2004-241506 (Patent Document 1) describes a configuration in which two capacitors are connected in series for the purpose of preventing a short-circuit between lines when a capacitor is arranged for high-frequency noise bypass between power lines. It is shown.
When connecting capacitors in series, for example, the ESL (equivalent series inductance, usually 0.5nH to 1nH) of a surface-mount type capacitor, and the inductance of the wiring connecting the capacitors (length is about 1nH at 1mm length) Only the number is added. For example, when two surface-mount capacitors are connected in series with a 5 mm long wire, the total effective inductance is about 6 nH, which is about 10 times higher than that of a single capacitor. Thus, when a plurality of capacitors are connected in series, the effective inductance is increased, and the bypass effect of high frequency noise is reduced.

一方、特開2011-014788号公報(特許文献2)では、コンデンサを複数並列配置したコンデンサの集合ユニット2つを対にして、互いに逆方向の電流が流れるように直列配置することで、コンデンサ集合ユニット間の相互インダクタンスにより装置全体の実効インダクタンス低減を目的とした構成が示されている。
以上のことにより、線間ショート防止を目的として複数のコンデンサを直列接続する場合、図12に示すようにコンデンサ2a,2bを互いに逆方向の電流が流れるように導体配線1aと1b間に配置することで、コンデンサの実効インダクタンスを低減する構成が得られる。
On the other hand, in Japanese Patent Application Laid-Open No. 2011-014788 (Patent Document 2), a capacitor assembly is formed by arranging two capacitor assembly units each having a plurality of capacitors arranged in parallel so that currents in opposite directions flow. A configuration aimed at reducing the effective inductance of the entire device by mutual inductance between units is shown.
As described above, when a plurality of capacitors are connected in series for the purpose of preventing a short circuit between the wires, the capacitors 2a and 2b are arranged between the conductor wirings 1a and 1b so that currents in opposite directions flow as shown in FIG. Thus, a configuration for reducing the effective inductance of the capacitor can be obtained.

特開2004-241506号公報(車両用配線板)JP 2004-241506 A (vehicle wiring board) 特開2011-014788号公報(コンデンサ装置)JP 2011-014788 (capacitor device)

電源配線間に、コンデンサのショートモード故障による線間ショート防止を目的としてコンデンサを2個以上直列接続する場合、実効インダクタンスはコンデンサの個数分増加し、高周波ノイズのバイパス効果が減少する。そのため、図12のように、直列接続したコンデンサを互いに逆方向の電流が流れるように配置することで、コンデンサ間の相互インダクタンスにより実効インダクタンスを低減した構成が得られる。
ところが、電源配線間にコンデンサを前記のように配置するためには、電源配線間の距離を離さなければならない。そのため、電源線間の容量結合が小さくなって高周波ノイズのバイパス効果が減少し、さらに、電流のループ面積が大きくなることで電磁ノイズの漏洩が大きくなり、また、外部からのノイズの影響を受けやすくなるという問題があった。
さらに、電源配線間にコンデンサを前記のように配置するためには、電源配線からコンデンサに接続するための配線を伸ばさなければならない。そのため、伸ばした配線のインダクタンスにより高周波ノイズのバイパス効果が低くなるという問題があった。
When two or more capacitors are connected in series between power supply lines in order to prevent a short circuit between lines due to a short mode failure of the capacitor, the effective inductance increases by the number of capacitors and the bypass effect of high frequency noise decreases. Therefore, as shown in FIG. 12, by arranging capacitors connected in series so that currents in opposite directions flow, a configuration in which effective inductance is reduced by mutual inductance between capacitors can be obtained.
However, in order to arrange the capacitors between the power supply wires as described above, the distance between the power supply wires must be increased. As a result, the capacitive coupling between the power supply lines is reduced, the high frequency noise bypass effect is reduced, and the current loop area is increased to increase the leakage of electromagnetic noise and be affected by external noise. There was a problem that it became easier.
Furthermore, in order to arrange the capacitors between the power supply wires as described above, the wires for connecting the power supply wires to the capacitors must be extended. Therefore, there is a problem that the bypass effect of the high frequency noise is lowered due to the inductance of the extended wiring.

本発明は上記の課題を解決するためのもので、高周波バイパス効果を高めるために、絶縁基板上に、近接し、対を成して配置・形成された電源配線間に、コンデンサを2個または複数個を絶縁基板上でコの字型に配置して直列接続し、さらに、これら電源配線間の近接構造を保ち、コンデンサの接続配線を短くしてコンデンサ接続配線のインダクタンスを低くした構成を実現することを目的とする。   The present invention is for solving the above-described problems. In order to enhance the high-frequency bypass effect, two capacitors or two capacitors are disposed between power supply wirings arranged and formed in close proximity and in pairs on an insulating substrate. Multiple units are arranged in a U-shape on an insulating substrate and connected in series. In addition, the proximity structure between these power supply wires is maintained, and the capacitor connection wires are shortened to reduce the inductance of the capacitor connection wires. The purpose is to do.

本発明に係る高周波ノイズ対策用電源回路は、
絶縁基板の一表面に対を成して近接し、平行に配置された導電材料により、板状で幅広に形成された第1及び第2の導体配線と、
この第1及び第2の導体配線の中間部分で互いに向き合うよう凹状に切欠きされた空間部と、
第1のコンデンサと第2のコンデンサと第3の導体配線とを有して構成され、前記第1のコンデンサは、始端端子が前記第1の導体配線に接続され、終端端子が前記第3の導体配線に接続され、前記第2のコンデンサは、始端端子が前記第2の導体配線に接続され、終端端子が前記第3の導体配線に接続され、前記第1のコンデンサを流れる電流の方向が前記第2のコンデンサを流れる電流の方向に対して180°逆向きとなるように前記第1のコンデンサと前記第2のコンデンサが並行に配置されることで、前記第1のコンデンサ、前記第3の導体配線、前記第2のコンデンサによる経路がコの字型構成に配置された直列コンデンサ回路を備え、
この直列コンデンサ回路は前記空間内に配置された構成とされる。
The power supply circuit for high frequency noise countermeasure according to the present invention is:
First and second conductor wirings that are formed in a plate shape and wide by a conductive material disposed in parallel in a pair on one surface of the insulating substrate, and
A space part that is notched in a concave shape so as to face each other in the middle part of the first and second conductor wirings,
The first capacitor has a first capacitor, a second capacitor, and a third conductor wiring, and the first capacitor has a start terminal connected to the first conductor wiring and a termination terminal connected to the third conductor wiring. The second capacitor has a start terminal connected to the second conductor wiring, a terminal terminal connected to the third conductor wiring, and the direction of the current flowing through the first capacitor is connected to the conductor wiring. The first capacitor and the third capacitor are arranged in parallel so that the first capacitor and the second capacitor are arranged to be opposite to each other by 180 ° with respect to the direction of the current flowing through the second capacitor. Conductor wiring, comprising a series capacitor circuit in which the path by the second capacitor is arranged in a U-shaped configuration,
The series capacitor circuit is configured to disposed within the space.

本発明に係る高周波ノイズ対策用電源回路によれば、
絶縁基板の表面に対を成して配置され、近接した導体配線の中間部分の互いに向き合う凹状の切欠き部を形成して空間部を形成し、複数のコンデンサを2分割し、その2分割されたそれぞれ同数のコンデンサは同一端子が同一方向を向くように配置し、かつそれぞれが直列接続され、2分割された直列接続のコンデンサ列の始端端子はそれぞれ前記第1及び第2の導体配線に接続され、それぞれ終端端子間は第3の導体配線で接続されてコの字型構成の直列コンデンサ回路が前記空間部に配置される構成にされたので、複数のコンデンサの同数は逆方向の電流が流れる直列接続される構成で、導体配線とコンデンサ間の配線長を短く実装することが可能となる。また、電源配線である導体配線間を近接構造とすることができ、複数個のコンデンサを直列接続した高周波バイパス効果を高めるため構成を実現することができる。
According to the high frequency noise countermeasure power supply circuit of the present invention,
It is arranged in pairs on the surface of the insulating substrate, forms a concave part facing each other in the middle part of the adjacent conductor wiring, forms a space part, divides a plurality of capacitors into two, and is divided into two The same number of capacitors are arranged so that the same terminals face the same direction, and each is connected in series, and the start terminal of the series-connected capacitor row divided into two is connected to the first and second conductor wirings, respectively. Since the terminal terminals are connected by the third conductor wiring, and the series capacitor circuit having a U-shaped configuration is arranged in the space portion, the same number of capacitors has a current in the reverse direction. It is possible to mount the conductor wiring and the capacitor with a short wiring length with a flowing series connection configuration. In addition, the conductor wiring that is the power supply wiring can be made close to each other, and the configuration can be realized to enhance the high frequency bypass effect in which a plurality of capacitors are connected in series.

本発明の実施の形態1を示す高周波ノイズ対策用電源回路の平面図である。It is a top view of the power circuit for high frequency noise countermeasures which shows Embodiment 1 of this invention. 本発明の実施の形態1の他の実施例を示す高周波ノイズ対策用電源回路の平面図である。It is a top view of the high frequency noise countermeasure power supply circuit which shows the other Example of Embodiment 1 of this invention. 本発明の実施の形態2を示す高周波ノイズ対策用電源回路の平面図である。It is a top view of the high frequency noise countermeasure power supply circuit which shows Embodiment 2 of this invention. 本発明の実施の形態3を示す高周波ノイズ対策用電源回路の平面図である。It is a top view of the high frequency noise countermeasure power supply circuit which shows Embodiment 3 of this invention. 本発明の実施の形態4を示す高周波ノイズ対策用電源回路の平面図である。It is a top view of the high frequency noise countermeasure power supply circuit which shows Embodiment 4 of this invention. 本発明の実施の形態4を示す高周波ノイズ対策用電源回路の底面図である。It is a bottom view of the high frequency noise countermeasure power supply circuit which shows Embodiment 4 of this invention. 図5または図6におけるY−Y' 断面図である。FIG. 7 is a YY ′ cross-sectional view in FIG. 5 or FIG. 6. 従来の電源配線間にコンデンサ1個を接続した部分の回路図である。FIG. 6 is a circuit diagram of a portion where one capacitor is connected between conventional power supply wirings. 従来の電源配線間にコンデンサ2個を直列接続した部分の回路図である。It is a circuit diagram of the part which connected two capacitors in series between the conventional power supply wiring. 従来の電源配線間に電源配線と直交するようにコンデンサ2個を直列接続配置した平面図である。FIG. 6 is a plan view in which two capacitors are connected in series so as to be orthogonal to a power supply wiring between conventional power supply wirings. 従来の電源配線間に電源配線と平行になるようコンデンサ2個を直列接続配置した平面図である。FIG. 6 is a plan view in which two capacitors are connected in series so as to be parallel to a power supply line between conventional power supply lines. 従来の電源配線間にコンデンサ2個を直列接続し,コンデンサをコの字型に配置した平面図である。FIG. 6 is a plan view in which two capacitors are connected in series between conventional power supply wirings and the capacitors are arranged in a U-shape.

実施の形態1.
図1を用いて本発明の実施の形態1による高周波ノイズ対策用電源回路を説明する。図1は本発明の実施の形態1の高周波ノイズ対策用電源回路を上面から見た平面図である。図中の1a、1bは絶縁基板6上に形成された第1、第2の導体配線で電源配線を形成する。1cは絶縁基板6上に形成された第3の導体配線、2a、2bは2個のコンデンサ、3は第1、第2の導体配線1a、1b間に設けられた空間部である。
図1による実施の形態1は、絶縁基板6上に対を成して平行に配置され近接した第1、第2の導体配線1aと1bに対し、2個のコンデンサ2aと2bが空間部3に配置され、かつ第1、第2の導体配線1aと1bの線間に直列接続された構造を示している。
第1、第2の導体配線1a及び1bは絶縁基板6の一表面に対を成して近接し、平行に配置された導電材料により、板状で幅広に形成されており、その導体配線の中間部分でそれぞれ互いに向き合うよう凹状に切欠きされて空間部3を形成する。
第3の導体配線1cは前記空間部3内に配置され、2個のコンデンサ2a、2bの第1、第2の導体配線1a及び1bに接続される端子と反対側の端子を接続し、この2個のコンデンサ2a、2bの配置がコの字型にされるよう直列コンデンサ回路を形成する。
また、言うまでもなく、第1、第2の導体配線1aと1bの中間を凹状に切欠きされた空間部3は、第1、第2の導体配線1aと1b及び第3の導体配線1cが電気的に絶縁される距離が取れるような大きさに空間が形成される。
Embodiment 1 FIG.
A high frequency noise countermeasure power supply circuit according to the first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a plan view of a high frequency noise countermeasure power supply circuit according to Embodiment 1 of the present invention as viewed from above. In the figure, reference numerals 1a and 1b denote first and second conductor wirings formed on the insulating substrate 6 to form power supply wirings. Reference numeral 1c denotes a third conductor wiring formed on the insulating substrate 6, reference numerals 2a and 2b denote two capacitors, and reference numeral 3 denotes a space provided between the first and second conductor wirings 1a and 1b.
In the first embodiment shown in FIG. 1, two capacitors 2a and 2b are arranged in the space portion 3 with respect to the first and second conductor wirings 1a and 1b that are arranged in parallel on the insulating substrate 6 in parallel. And a structure in which the first and second conductor wirings 1a and 1b are connected in series with each other.
The first and second conductor wirings 1a and 1b are in close proximity to each other on one surface of the insulating substrate 6, and are formed in a plate shape and wide by a conductive material arranged in parallel. The space part 3 is formed by being cut out in a concave shape so as to face each other at the intermediate part.
The third conductor wiring 1c is disposed in the space 3, and connects the terminals on the opposite side of the terminals connected to the first and second conductor wirings 1a and 1b of the two capacitors 2a and 2b. A series capacitor circuit is formed so that the two capacitors 2a and 2b are arranged in a U shape.
Needless to say, the space portion 3 in which the middle of the first and second conductor wirings 1a and 1b is cut out in a concave shape is electrically connected to the first and second conductor wirings 1a and 1b and the third conductor wiring 1c. The space is formed in such a size as to allow a distance to be electrically insulated.

図中のコンデンサ2aと2bは表面実装型のコンデンサであり、コンデンサ2aの一方の端子は第1の導体配線1aに接続され、他方の端子は第3の導体配線1cに接続されている。また、コンデンサ2bの一方の端子は第2の導体配線1bに接続され、他方の端子は第3の導体配線1cに接続されている。   Capacitors 2a and 2b in the figure are surface-mount type capacitors, and one terminal of the capacitor 2a is connected to the first conductor wiring 1a and the other terminal is connected to the third conductor wiring 1c. One terminal of the capacitor 2b is connected to the second conductor wiring 1b, and the other terminal is connected to the third conductor wiring 1c.

以上により、実施の形態1は、第1の導体配線1aからコンデンサ2a、第3の導体配線1c、コンデンサ2b、第2の導体配線1bまでの経路をコの字型に配置し、コンデンサ2aの第1の導体配線1aに接続する端子、及びコンデンサ2bの第2の導体配線1bに接続するコンデンサ2aと同一の端子が同一の方向、すなわちコンデンサ2aを流れる電流の方向がコンデンサ2bを流れる電流の方向に対して180°逆向きとなるように、コンデンサ2aと2bを平行に配置する直列コンデンサ回路の構造を有している。   As described above, in the first embodiment, the path from the first conductor wiring 1a to the capacitor 2a, the third conductor wiring 1c, the capacitor 2b, and the second conductor wiring 1b is arranged in a U-shape, and the capacitor 2a The terminal connected to the first conductor wiring 1a and the same terminal as the capacitor 2a connected to the second conductor wiring 1b of the capacitor 2b are in the same direction, that is, the direction of the current flowing through the capacitor 2a is the current flowing through the capacitor 2b. The capacitor has a structure of a series capacitor circuit in which the capacitors 2a and 2b are arranged in parallel so as to be opposite to the direction by 180 °.

次に、本発明の実施の形態1による作用を説明する。コンデンサ2aと2b及び各コンデンサに接続される導体配線に対して、第1の導体配線1aから第2の導体配線1b、あるいは第2の導体配線1bから第1の導体配線1aに、コンデンサ2aと2bを経由してノイズ電流が流れる場合を考える。本実施の形態1の構造では、コンデンサ2aを流れる電流の方向がコンデンサ2bを流れる電流の方向に対して180°逆向きとなるようにコンデンサをコの字型(並行)に配置し実装するため、コンデンサに流れる電流によって発生する磁束が打ち消しあう。つまり、コンデンサ間に働く相互インダクタンスによって各コンデンサの実効インダクタンスが減少し、第1の導体配線1aから第2の導体配線1b、あるいは第2の導体配線1bから第1の導体配線1aにコンデンサ2aと2bを経由してノイズ電流が流れる場合の実効インダクタンスが減少するため、コンデンサを直線状に配置した場合に対して高い高周波ノイズのバイパス効果を得られる。   Next, the effect | action by Embodiment 1 of this invention is demonstrated. Capacitors 2a and 2b and the conductor wiring connected to each capacitor, the first conductor wiring 1a to the second conductor wiring 1b, or the second conductor wiring 1b to the first conductor wiring 1a, the capacitor 2a and Consider the case where a noise current flows through 2b. In the structure of the first embodiment, the capacitor is arranged in a U-shape (parallel) so that the direction of the current flowing through the capacitor 2a is 180 ° opposite to the direction of the current flowing through the capacitor 2b. The magnetic flux generated by the current flowing through the capacitor cancels out. That is, the effective inductance of each capacitor is reduced by the mutual inductance acting between the capacitors, and the capacitor 2a is connected from the first conductor wiring 1a to the second conductor wiring 1b or from the second conductor wiring 1b to the first conductor wiring 1a. Since the effective inductance when the noise current flows through 2b is reduced, a high frequency noise bypass effect can be obtained as compared with the case where the capacitors are arranged linearly.

また、第1の導体配線1aと第2の導体配線1bの中間部を互いに対向する凹状の切欠き形状として空間部3を形成し、その空間部3に直列コンデンサ回路を配置することで、平行に配置した凹状の切欠き形状を持たない導体配線間に直列コンデンサ回路を実装する場合に比べて、コンデンサ2aと第1の導体配線1a、コンデンサ2bと第2の導体配線1b間の配線長を短く実装することが可能になると共に、上記コンデンサのコの字配置により第1の導体配線1aと第2の導体配線1bの両導体配線を近接構造にしたまま線間に実装することが可能となる。
従って、実施の形態1により、対を成して配置され、近接した導体配線間に、上記コの字型に平行配置してコンデンサ2個または複数を直列接続する構成で、導体配線とコンデンサ間の配線長を短くする実装が可能となる。よって、電源配線間の近接構造を保ったまま、コンデンサを直列接続した直列コンデンサ回路構成を高周波バイパス効果を高めるためにコの字型に配置する構成を実現できる。
In addition, a space 3 is formed as a concave cutout shape in which an intermediate portion between the first conductor wiring 1a and the second conductor wiring 1b is opposed to each other, and a series capacitor circuit is arranged in the space 3 so that the parallel portions Compared to the case where a series capacitor circuit is mounted between conductor wirings that do not have a concave notch shape, the wiring length between the capacitor 2a and the first conductor wiring 1a, and between the capacitor 2b and the second conductor wiring 1b is It becomes possible to mount it short, and it is possible to mount between the first conductor wiring 1a and the second conductor wiring 1b while maintaining the adjacent structure with the U-shaped arrangement of the capacitor. Become.
Therefore, according to the first embodiment, a configuration in which two or a plurality of capacitors are connected in series by arranging in parallel in the U-shape between adjacent conductor wires arranged in pairs, and between the conductor wires and the capacitors. It is possible to mount with a shorter wiring length. Accordingly, it is possible to realize a configuration in which a series capacitor circuit configuration in which capacitors are connected in series is arranged in a U-shape in order to enhance the high frequency bypass effect while maintaining the proximity structure between the power supply wirings.

なお、実施の形態1では、コンデンサ2aと2bを対向させて配置しているが、コンデンサ2aの第1の導体配線1aに接続する端子、及びコンデンサ2bの導体配線1bに接続する端子が同一の方向を向いた構造であるならば、第1の導体配線1aを延長してコンデンサ2aと接続、あるいは第2の導体配線1bを延長してコンデンサ2bと接続する構成も含むものとする。   In the first embodiment, the capacitors 2a and 2b are arranged to face each other, but the terminal connected to the first conductor wiring 1a of the capacitor 2a and the terminal connected to the conductor wiring 1b of the capacitor 2b are the same. If the structure is oriented in the direction, it includes a configuration in which the first conductor wiring 1a is extended and connected to the capacitor 2a, or the second conductor wiring 1b is extended and connected to the capacitor 2b.

また、実施の形態1では、コンデンサ2aと2bを表面実装型のコンデンサとしているが、コンデンサ2aの第1の導体配線1aに接続する端子、及びコンデンサ2bの第2の導体配線1bに接続する端子が同一の方向を向いた構造であるならば、リードタイプのコンデンサを使用する構成も含むものとする。   In the first embodiment, the capacitors 2a and 2b are surface mount type capacitors. However, a terminal connected to the first conductor wiring 1a of the capacitor 2a and a terminal connected to the second conductor wiring 1b of the capacitor 2b. If the structure is oriented in the same direction, a configuration using a lead type capacitor is also included.

また、実施の形態1では、コンデンサ2aの第1の導体配線1aに接続する端子、及びコンデンサ2bの第2の導体配線1bに接続する端子が同一の方向、すなわちコンデンサ2aを流れる電流の方向がコンデンサ2bを流れる電流の方向に対して180°逆向きとなる構造を示しているが、対向するそれぞれのコンデンサを流れる電流によって発生する磁界が良好にキャンセルする範囲内ならば、コンデンサを配置する角度を変える構成も含むものとする。   In the first embodiment, the terminal connected to the first conductor wiring 1a of the capacitor 2a and the terminal connected to the second conductor wiring 1b of the capacitor 2b are in the same direction, that is, the direction of the current flowing through the capacitor 2a. The structure is 180 ° opposite to the direction of the current flowing through the capacitor 2b. However, if the magnetic field generated by the current flowing through each opposing capacitor is within the range that cancels well, the angle at which the capacitor is placed The structure which changes is also included.

また、実施の形態1では、第1の導体配線1aと第2の導体配線1b間に2個のコンデンサを直列接続する構造を示しているが、コンデンサが3個以上の複数の場合では、奇数の場合は一方を1個多くして、その複数のコンデンサを2分割し、その2分割されたそれぞれ同数のコンデンサは同一端子が同一方向を向くように配置し、かつそれぞれが直列接続され、2分割された直列接続のコンデンサ列の始端端子はそれぞれ前記第1及び第2の導体配線に接続され、それぞれ終端端子間は第3の導体配線で接続されてコの字型構成の直列コンデンサ回路が前記空間3内に配置されるようにする構成としてもよい。
また、実施の形態1では、図2に示すように、コンデンサ2aと2b間を最短距離で接続するように第3の導体配線1cを直線状に配置した構造も含むものとする。
In the first embodiment, a structure in which two capacitors are connected in series between the first conductor wiring 1a and the second conductor wiring 1b is shown. In this case, increase one by one and divide the capacitors into two. The same number of capacitors divided into two are arranged so that the same terminal faces the same direction, and each is connected in series. The starting end terminals of the divided series-connected capacitor rows are connected to the first and second conductor wires, respectively, and the terminal terminals are connected to each other by a third conductor wire to form a U-shaped series capacitor circuit. A configuration may be adopted in which it is arranged in the space 3.
Further, the first embodiment includes a structure in which the third conductor wiring 1c is linearly arranged so as to connect the capacitors 2a and 2b with the shortest distance as shown in FIG.

実施の形態2.
図3を用いて本発明の実施の形態2による高周波ノイズ対策用電源回路を説明する。図3は本発明の実施の形態2を上面から見た平面図である。図中の1a、1b、1cは第1、第2、第3の導体配線、1e、1fは第1、第2の導体配線の拡張部、2a、2bはコンデンサ、3は第1、第2の導体配線1a、1b間の空間部である。
図3は実施の形態1において第1の導体配線1aと第2の導体配線1bの凹状切欠き部の細くなっている部分を、空間部3に対して外向きに大略切欠き幅と同じ幅を広げて拡張部分1eと1fとした構造を示している。その他の部位についての説明は、実施の形態1と同じなので省略する。
以上のように、実施の形態2は、実施の形態1に対して第1、第2の導体配線1a、1bが拡張部1eと1fを有している。
Embodiment 2. FIG.
A high frequency noise countermeasure power supply circuit according to the second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a plan view of the second embodiment of the present invention as viewed from above. In the figure, 1a, 1b, and 1c are first, second, and third conductor wirings, 1e and 1f are first and second conductor wiring extensions, 2a and 2b are capacitors, and 3 is first and second wirings. This is a space between the conductor wirings 1a and 1b.
FIG. 3 shows that the narrowed portions of the concave notches of the first conductor wiring 1a and the second conductor wiring 1b in Embodiment 1 are approximately the same as the notch width outwardly with respect to the space portion 3. The structure is shown as expanded portions 1e and 1f. The description of the other parts is the same as that in Embodiment 1, and will be omitted.
As described above, in the second embodiment, the first and second conductor wirings 1a and 1b have the extended portions 1e and 1f as compared with the first embodiment.

次に、実施の形態2による本発明の作用を説明する。第1の導体配線1aと第2の導体配線1bを空間部3に対して外向きに幅を広げることで、空間部3に隣接する部分の第1の導体配線1aと第2の導体配線1bの抵抗値を低くできるため、耐電流量を高める効果が得られる。従って、実施の形態2により、実施の形態1が有する作用に加え、耐電流量を高める構造が得られる。
なお、実施の形態2では、第1の導体配線1aと第2の導体配線1bの拡張部1eと1fは外側に幅を広げる構造としているが、拡張部は第1の導体配線1aと第2の導体配線1bの切欠き部分の厚みを増す構造も含むものとする。即ち、第1の導体配線1aと第2の導体配線1bの切欠き部分の導体の体積を、この切欠き部と同じ長さの他の部分と同じ体積とすることで、耐電流量を高めることができる。
また、実施の形態2では、第1の導体配線1aと第2の導体配線1bの拡張部1eと1fは長方形としているが、拡張部1eと1fをより長くした形状や、長方形以外の形状も含むものとする。
Next, the operation of the present invention according to the second embodiment will be described. The first conductor wiring 1a and the second conductor wiring 1b are adjacent to the space portion 3 by widening the first conductor wiring 1a and the second conductor wiring 1b outward with respect to the space portion 3. Since the resistance value can be lowered, an effect of increasing the withstand current amount can be obtained. Therefore, according to the second embodiment, in addition to the function of the first embodiment, a structure that increases the withstand current amount can be obtained.
In the second embodiment, the extended portions 1e and 1f of the first conductor wiring 1a and the second conductor wiring 1b have a structure that widens outward, but the extended portion has the first conductor wiring 1a and the second conductor wiring 1a. It also includes a structure that increases the thickness of the notched portion of the conductor wiring 1b. In other words, by increasing the volume of the conductor in the notched portion of the first conductor wiring 1a and the second conductor wiring 1b to the same volume as the other portions having the same length as the notched portion, the current resistance can be increased. Can do.
In the second embodiment, the extended portions 1e and 1f of the first conductor wiring 1a and the second conductor wiring 1b are rectangular. However, the extended portions 1e and 1f are longer and other shapes are also possible. Shall be included.

実施の形態3.
図4を用いて本発明の実施の形態3による高周波ノイズ対策用電源回路を説明する。図4は本発明の実施の形態3を上面から見た平面図である。図中の1a、1b、1cは第1、第2、第3の導体配線、2a、2bはコンデンサ、3は第1、第2の導体配線1a、1b間の空間部、4a、4bはそれぞれ第1の導体配線1aと第2の導体配線1bに形成された切込み形状部である。切込み形状部4a、4bは第1の導体配線1aと第2の導体配線1bのコンデンサ2aと2bのそれぞれの接続部分で、第1の導体配線1aと第2の導体配線1bに対して外側から内側向きの三角形の切込み形状を有した構造とされる。その他の部位についての説明は、実施の形態1と同じなので省略する。
以上のように、実施の形態3は、実施の形態1に対して第1の導体配線1aと第2の導体配線1bに、そのコンデンサ2aと2bのそれぞれの接続部分で切込み形状部4aと4bを有している。
Embodiment 3 FIG.
A high-frequency noise countermeasure power supply circuit according to Embodiment 3 of the present invention will be described with reference to FIG. FIG. 4 is a plan view of the third embodiment of the present invention as viewed from above. In the figure, 1a, 1b and 1c are first, second and third conductor wirings, 2a and 2b are capacitors, 3 is a space between the first and second conductor wirings 1a and 1b, and 4a and 4b are respectively This is a cut-shaped portion formed in the first conductor wiring 1a and the second conductor wiring 1b. The notched portions 4a and 4b are the connection portions of the capacitors 2a and 2b of the first conductor wiring 1a and the second conductor wiring 1b, respectively, and from the outside with respect to the first conductor wiring 1a and the second conductor wiring 1b. The structure has a triangular incision shape facing inward. The description of the other parts is the same as that in Embodiment 1, and will be omitted.
As described above, the third embodiment is different from the first embodiment in that the first conductor wiring 1a and the second conductor wiring 1b are cut at the connection portions of the capacitors 2a and 2b. have.

次に、実施の形態3による高周波ノイズ対策用電源回路の作用を説明する。第1の導体配線1aと第2の導体配線1bに対して、コンデンサ2aと2bとの接続部分に切込み形状部4a、4bを構成することで、第1の導体配線1aと第2の導体配線1bに流れるノイズ電流の経路をコンデンサの端子付近に絞ることができるため、ノイズ電流がコンデンサを通りやすくなり、切込み形状部がない場合に比べて高周波ノイズのバイパス効果が高められる。
従って、実施の形態3により、実施の形態1が有する作用に加え、高周波ノイズのバイパス効果を高める構造が得られる。
Next, the operation of the high frequency noise countermeasure power supply circuit according to the third embodiment will be described. For the first conductor wiring 1a and the second conductor wiring 1b, the first conductor wiring 1a and the second conductor wiring are formed by forming the cut-shaped portions 4a and 4b at the connection portion between the capacitors 2a and 2b. Since the path of the noise current flowing through 1b can be narrowed to the vicinity of the capacitor terminal, the noise current can easily pass through the capacitor, and the bypass effect of high-frequency noise is enhanced as compared with the case where there is no cut shape.
Therefore, the third embodiment provides a structure that enhances the bypass effect of high frequency noise in addition to the function of the first embodiment.

なお、実施の形態3では、第1の導体配線1aと第2の導体配線1bをコンデンサ2aと2bとの接続部分で、内側向きの三角形の切込み形状部4aと4bを構成しているが、第1の導体配線1aと第2の導体配線1bに切込み形状部を構成することでコンデンサとの接続部分に電流経路を絞れるならば、切込み形状は三角形以外も含むものとする。   In the third embodiment, the first conductor wiring 1a and the second conductor wiring 1b are connected to the capacitors 2a and 2b to form inwardly triangular cut-in shape portions 4a and 4b. If the current path can be narrowed down to the connection portion with the capacitor by forming the cut shape portion in the first conductor wiring 1a and the second conductor wiring 1b, the cut shape includes other than the triangle.

実施の形態4.
図5、図6、図7を用いて本発明の実施の形態4による高周波ノイズ対策用電源回路を説明する。図5は本発明の実施の形態4を第1の導体配線1aの面から見た図であり、図6は第2の導体配線1bの面から見た図であり、図7は図5または図6のY−Y' 断面図である。図中の1a、1b、1c、1dは第1、第2、第3、第4の導体配線、2a、2bはコンデンサ、3aは第1の導体配線1aの一端寄りに第1の導体配線1aが所定の広さに刳り抜かれた空間部、3bはこの空間部3aと同じ端部寄りの第2の導体配線1bに所定の広さで第2の導体配線1bが刳り抜かれた空間部、5はスルーホール、6は絶縁基板である。
Embodiment 4 FIG.
A high frequency noise countermeasure power supply circuit according to the fourth embodiment of the present invention will be described with reference to FIGS. 5, 6, and 7. FIG. 5 is a view of the fourth embodiment of the present invention viewed from the surface of the first conductor wiring 1a, FIG. 6 is a view of the second conductor wiring 1b, and FIG. It is YY 'sectional drawing of FIG. In the figure, 1a, 1b, 1c and 1d are first, second, third and fourth conductor wirings, 2a and 2b are capacitors, and 3a is a first conductor wiring 1a near one end of the first conductor wiring 1a. Is a space part 3b is hollowed out to a predetermined area, 3b is a space part in which the second conductor wiring 1b is hollowed out to a second conductor wiring 1b close to the same end as the space part 3a, 5b Is a through hole, and 6 is an insulating substrate.

図5〜図7図は絶縁基板6の絶縁体層を上下(表裏)に挟んで対向して配置された幅広の第1の導体配線1aと第2の導体配線1bに刳り抜かれて形成されたそれぞれの空間部3a、3bにそれぞれコンデンサ2aと2bを配置し、このコンデンサ2aと2bを第1、第2の導体配線1a、1b間に第3、第4の導体配線1c、1dにより直列に接続した構造を示している。
第1の導体配線1aに設けられた空間部3aは、第1の導体配線1aと第3の導体配線1cが電気的に絶縁される距離が取れるような大きさに第1の導体配線1aを刳り抜いた形状としている。また、第2の導体配線1bに設けられた空間部3bは、第1の導体配線1aの刳り抜き形状、すなわち空間部3aに対向する形状としている。
5 to 7 are formed by being cut out by the wide first conductor wiring 1a and the second conductor wiring 1b which are arranged to face each other with the insulating layer of the insulating substrate 6 sandwiched between the top and bottom (front and back). Capacitors 2a and 2b are disposed in the respective space portions 3a and 3b, and the capacitors 2a and 2b are connected in series by the third and fourth conductor wires 1c and 1d between the first and second conductor wires 1a and 1b. The connected structure is shown.
The space 3a provided in the first conductor wiring 1a has the first conductor wiring 1a sized so as to have a distance that allows the first conductor wiring 1a and the third conductor wiring 1c to be electrically insulated. It has a hollow shape. The space 3b provided in the second conductor wiring 1b has a hollowed shape of the first conductor wiring 1a, that is, a shape facing the space 3a.

図中のコンデンサ2aと2bは表面実装型のコンデンサであり、コンデンサ2aの一方の端子は第1の導体配線1aに接続され、他方は第3の導体配線1cに接続されている。また、コンデンサ2bの一方の端子は第2の導体配線1bに接続され、他方は第4の導体配線1dに接続されている。スルーホール5は絶縁基板6の絶縁体層を貫通して第3、第4の導体配線1cと1dを接続している。
以上により、実施の形態4は、第1の導体配線1aからコンデンサ2a、第3の導体配線1c、スルーホール5、第4の導体配線1b、コンデンサ2b、第2の導体配線1dまでの経路をコの字型に配置し、コンデンサ2aの第1の導体配線1aに接続する端子、及びコンデンサ2bの第2の導体配線1bに接続する端子が同一の方向、すなわちコンデンサ2aを流れる電流の方向がコンデンサ2bを流れる電流の方向に対して180°逆向きとなるように、コンデンサ2aと2bを対向させて配置する直列コンデンサ回路構造を有している。
Capacitors 2a and 2b in the figure are surface mount type capacitors, and one terminal of the capacitor 2a is connected to the first conductor wiring 1a and the other is connected to the third conductor wiring 1c. One terminal of the capacitor 2b is connected to the second conductor wiring 1b, and the other terminal is connected to the fourth conductor wiring 1d. The through hole 5 penetrates through the insulating layer of the insulating substrate 6 and connects the third and fourth conductor wirings 1c and 1d.
As described above, in the fourth embodiment, the path from the first conductor wiring 1a to the capacitor 2a, the third conductor wiring 1c, the through hole 5, the fourth conductor wiring 1b, the capacitor 2b, and the second conductor wiring 1d is described. The terminal connected to the first conductor wiring 1a of the capacitor 2a and the terminal connected to the second conductor wiring 1b of the capacitor 2b are arranged in the same direction, that is, the direction of the current flowing through the capacitor 2a. The capacitor has a series capacitor circuit structure in which the capacitors 2a and 2b are arranged to face each other so that the direction of current flowing through the capacitor 2b is 180 ° opposite.

次に、本発明の実施の形態4による作用を説明する。コンデンサ2aと2b及び各コンデンサに接続される導体配線に対して、第1の導体配線1aから第2の導体配線1b、あるいは第2の導体配線1bから第1の導体配線1aにコンデンサ2aと2bを経由してノイズ電流が流れる場合を考える。本発明の実施の形態4による構造では、コンデンサ2aを流れる電流の方向がコンデンサ2bを流れる電流の方向に対して180°逆向きとなるようにコンデンサを実装するため、各コンデンサに流れる電流によって発生する磁束が打ち消しあう。つまり、コンデンサ間の相互インダクタンスによって各コンデンサの実効インダクタンスが減少し、第1の導体配線1aから第2の導体配線1b、あるいは第2の導体配線1bから第1の導体配線1aにコンデンサ2aと2bを経由してノイズ電流が流れる場合のインダクタンスが低減するため、コンデンサを直線状に配置した場合に比べて高い高周波ノイズバイパス効果が得られる。   Next, the operation of the fourth embodiment of the present invention will be described. Capacitors 2a and 2b and capacitors 2a and 2b from the first conductor wiring 1a to the second conductor wiring 1b or from the second conductor wiring 1b to the first conductor wiring 1a with respect to the conductor wiring connected to each capacitor Consider the case where a noise current flows through In the structure according to the fourth embodiment of the present invention, the capacitor is mounted so that the direction of the current flowing through the capacitor 2a is 180 ° opposite to the direction of the current flowing through the capacitor 2b. The magnetic flux to cancel out. That is, the effective inductance of each capacitor is reduced by the mutual inductance between the capacitors, and the capacitors 2a and 2b are transferred from the first conductor wiring 1a to the second conductor wiring 1b or from the second conductor wiring 1b to the first conductor wiring 1a. Since the inductance when the noise current flows through is reduced, a high frequency noise bypass effect can be obtained as compared with the case where the capacitors are arranged linearly.

また、第1の導体配線1aと第2の導体配線1bの刳り抜き形状部3a、3b、即ち絶縁基板6の絶縁体層の両面にコンデンサを対向させて配置することで、導体配線とコンデンサ間の配線長を短くする実装が可能となる。
従って、実施の形態4により、絶縁基板6の絶縁体層を挟んで対向して配置された電源配線(導体配線)間にコンデンサ2個または複数を直列接続する場合、コンデンサをそれぞれ空間部3a、3bに配置し、コンデンサの直列回路をコの字型に配置構成することで、導体配線とコンデンサ間の配線長を短くする実装が可能となり、電源配線(第1、第2の導体配線)間の近接構造を保ったまま、コンデンサを直列接続して高周波バイパス効果を高めるための構成が実現できる。
In addition, by arranging capacitors on opposite sides of the cutout portions 3a and 3b of the first conductor wiring 1a and the second conductor wiring 1b, that is, the insulating layer of the insulating substrate 6, between the conductor wiring and the capacitor. It is possible to mount with a shorter wiring length.
Therefore, according to the fourth embodiment, when two or more capacitors are connected in series between power supply wires (conductor wires) arranged opposite to each other with the insulator layer of the insulating substrate 6 interposed therebetween, the capacitors are respectively connected to the space portion 3a, By placing the capacitor in 3b and arranging the capacitor series circuit in a U shape, it is possible to reduce the wiring length between the conductor wiring and the capacitor, and between the power supply wiring (first and second conductor wiring) The structure for enhancing the high frequency bypass effect by connecting capacitors in series can be realized while maintaining the proximity structure.

なお、実施の形態4では、コンデンサ2aの第1の導体配線1aに接続する端子、及びコンデンサ2bの導体配線1bに接続する端子が同一の方向、すなわちコンデンサ2aを流れる電流の方向がコンデンサ2bを流れる電流の方向に対して180°逆向きとなる構造を示しているが、対向するコンデンサを流れる電流によって発生する磁界が良好にキャンセルする範囲内ならば、角度を変える構造も含むものとする。
また、実施の形態4では、第1の導体配線1aと第2の導体配線1bは同一の幅を持つ配線としているが、空間部3bが空間部3aに対向する刳り抜き形状であるならば、幅が異なる、あるいは少なくとも一方の導体配線をベタ導体とする構成も含むものとする。
In the fourth embodiment, the terminal connected to the first conductor wiring 1a of the capacitor 2a and the terminal connected to the conductor wiring 1b of the capacitor 2b are in the same direction, that is, the direction of the current flowing through the capacitor 2a is the same as that of the capacitor 2b. Although a structure that is 180 ° opposite to the direction of the flowing current is shown, a structure that changes the angle is also included as long as the magnetic field generated by the current flowing through the opposing capacitor is within a range that can be satisfactorily canceled.
In the fourth embodiment, the first conductor wiring 1a and the second conductor wiring 1b have the same width. However, if the space 3b has a hollow shape facing the space 3a, A configuration in which the width is different or at least one of the conductor wirings is a solid conductor is also included.

本発明の高周波ノイズ対策用電源回路は、例えば、自動車などに採用される各種電気アクチュエータや、自動車に関する各種情報を液晶パネルなどに表示する制御装置が搭載された車両用配線板に利用される可能性がある。   The power circuit for countermeasures against high-frequency noise according to the present invention can be used for, for example, a vehicle wiring board equipped with various electric actuators used in automobiles and a control device for displaying various information about automobiles on a liquid crystal panel or the like. There is sex.

1a:第1の導体配線、1b:第2の導体配線、1c:第3の導体配線、1d:第4の導体配線、1e、1f:拡張部、2、2a、2b:コンデンサ、3、3a、3b:空間部、4a、4b:切込み形状部、5:スルーホール、6:絶縁基板。 1a: 1st conductor wiring, 1b: 2nd conductor wiring, 1c: 3rd conductor wiring, 1d: 4th conductor wiring, 1e, 1f: Extension part, 2, 2a, 2b: Capacitor, 3, 3a , 3b: space part, 4a, 4b: notch shape part, 5: through hole, 6: insulating substrate.

Claims (4)

絶縁基板の一表面に対を成して近接し、平行に配置された導電材料により、板状で幅広に形成された第1及び第2の導体配線と、
この第1及び第2の導体配線の中間部分で互いに向き合うよう凹状に切欠きされた空間部と、
第1のコンデンサと第2のコンデンサと第3の導体配線とを有して構成され、前記第1のコンデンサは、始端端子が前記第1の導体配線に接続され、終端端子が前記第3の導体配線に接続され、前記第2のコンデンサは、始端端子が前記第2の導体配線に接続され、終端端子が前記第3の導体配線に接続され、前記第1のコンデンサを流れる電流の方向が前記第2のコンデンサを流れる電流の方向に対して180°逆向きとなるように前記第1のコンデンサと前記第2のコンデンサが並行に配置されることで、前記第1のコンデンサ、前記第3の導体配線、前記第2のコンデンサによる経路がコの字型構成に配置された直列コンデンサ回路を備え、
この直列コンデンサ回路が前記空間内に配置されてなることを特徴とする高周波ノイズ対策用電源回路。
First and second conductor wirings that are formed in a plate shape and wide by a conductive material disposed in parallel in a pair on one surface of the insulating substrate, and
A space part that is notched in a concave shape so as to face each other in the middle part of the first and second conductor wirings,
The first capacitor has a first capacitor, a second capacitor, and a third conductor wiring, and the first capacitor has a start terminal connected to the first conductor wiring and a termination terminal connected to the third conductor wiring. The second capacitor has a start terminal connected to the second conductor wiring, a terminal terminal connected to the third conductor wiring, and the direction of the current flowing through the first capacitor is connected to the conductor wiring. The first capacitor and the third capacitor are arranged in parallel so that the first capacitor and the second capacitor are arranged to be opposite to each other by 180 ° with respect to the direction of the current flowing through the second capacitor. Conductor wiring, comprising a series capacitor circuit in which the path by the second capacitor is arranged in a U-shaped configuration,
High frequency noise countermeasure power circuit the series capacitor circuit is characterized by comprising disposed within said space.
前記第1及び第2の導体配線の凹状に切欠きされた部分に対して、この切欠き部と同じ長さの他の部分と同じ体積となる様に、前記空間部に対して外向きに拡張部を設けたことを特徴とする、請求項1に記載の高周波ノイズ対策用電源回路。 With respect to the concavely cut portions of the first and second conductor wirings , outwardly with respect to the space portion so as to have the same volume as other portions having the same length as the cutout portions. The high frequency noise countermeasure power supply circuit according to claim 1, further comprising an extension portion. 前記第1及び第2の導体配線の、両導体配線とコンデンサ列が接続される部分に、外側から内側に向かって切込み形状部を形成したことを特徴とする、請求項1に記載の高周波ノイズ対策用電源回路。   2. The high frequency noise according to claim 1, wherein a cut shape portion is formed from the outside toward the inside in a portion of the first and second conductor wires where both the conductor wires and the capacitor row are connected. Power supply circuit for countermeasures. 絶縁基板の表裏両面にそれぞれ導電材料により、平行に配置された板状で幅広に形成された第1及び第2の導体配線と、
この第1及び第2のそれぞれの導体配線の一端寄りに導体配線が所定の広さに刳り抜かれた空間部と、
この表裏両面の第1及び第2の導体配線の空間部内に設けられ、同一端子が同じ方向を向くようそれぞれ第1及び第2の導体配線に接続されて配置される複数のコンデンサと、
表裏両面の第1及び第2の導体配線の空間部に設けられ、それぞれのコンデンサの他端に接続され、かつ絶縁基板の表裏を貫くスルーホールによって表裏両面が導通される第3の導体配線を
を備えることを特徴とする高周波ノイズ対策用電源回路。
First and second conductor wirings formed in a wide plate-like shape arranged in parallel by conductive materials on the front and back surfaces of the insulating substrate, respectively,
A space where the conductor wiring is cut out to a predetermined area near one end of each of the first and second conductor wirings,
A plurality of capacitors provided in the space portion of the first and second conductor wirings on both the front and back surfaces, and connected to the first and second conductor wirings so that the same terminal faces the same direction, and
A third conductor wiring that is provided in the space of the first and second conductor wirings on both the front and back surfaces, is connected to the other end of each capacitor, and is electrically connected to both front and back surfaces by through holes that penetrate the front and back surfaces of the insulating substrate. A power supply circuit for high frequency noise countermeasures.
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