JPH03235317A - Capacitor - Google Patents

Abstract

PURPOSE:To offset the generation of distortion component by connecting two capacitors in series or in parallel so that the counter electromotive force generated by those two capacitors are cancelled, and using them as one capacitor. CONSTITUTION:For a capacitor 4, an element 5a, where electrodes 2a and 3a are joined closely on both sides of a dielectric 1a, and an element 5b, where electrodes 2b and 3b are joined closely on both sides of a dielectric 1b, are arranged side by side so that the electrodes 3a and 2b may overlap one upon the other, and the electrode 2a and the electrode 3b are connected together and it is connected to a terminal 6, and the electrode 3a and the electrode 2b are connected together and it is connected to a terminal 7, thus the elements 5a and 5b are connected in parallel. And the elements 5a and 5b are covered with a covering member 8, and the terminals 6 and 7 are exposed to form the capacitor 4. Thereupon, by the signal voltage between the terminals 6 and 7, the elements 5a and 5b vibrate in the same direction, and by the vibration, counter electromotive force is generated by the electrodes of respective elements, but the electrodes are wired to the terminals 6 and 7 so that they may cancel, whereby output does not occur between the terminals.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、電子回路に用いられるコンデンサに関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a capacitor used in an electronic circuit.

〔従来の技術〕[Conventional technology]

一般的にコンデンサは、基本的には第５図の説明図に示
すように、誘電体１０両面に電極２，３を密着接合させ
て構成している。そしてこの電極２．３間に所定の容量
を得て電子回路に用いている。In general, a capacitor is basically constructed by closely bonding electrodes 2 and 3 to both sides of a dielectric 10, as shown in the explanatory diagram of FIG. A predetermined capacitance is obtained between the electrodes 2 and 3 and used in an electronic circuit.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

しかしながら、前述のコンデンサの中には圧電性を示す
ものがある。特に積層セラミックコンデンサやフィルム
コンデンサ等では、電極間に振動を加えると電圧を生じ
、逆に電極間に交番電圧を加えると振動を起こす圧電特
性を有している。そのためコンデンサの電極間に加えた
信号に対して逆起電力が発生し、この逆起電力が前記信
号に対し、種々の歪みとなって悪影響を及ぼす欠点があ
った。However, some of the aforementioned capacitors exhibit piezoelectricity. In particular, multilayer ceramic capacitors, film capacitors, and the like have piezoelectric properties that generate voltage when vibrations are applied between electrodes, and that generate vibrations when alternating voltage is applied between electrodes. Therefore, a back electromotive force is generated with respect to the signal applied between the electrodes of the capacitor, and this back electromotive force causes various distortions to the signal, resulting in a disadvantage that it has an adverse effect.

〔課題を解決するための手段〕[Means to solve the problem]

そのため本発明では、２つのコンデンサを用いて、各々
のコンデンサに発生する逆起電力を打ち消すように直列
または並列に結線し、それらを１つのコンデンサとして
用いることを特徴としたものである。Therefore, the present invention is characterized in that two capacitors are used, connected in series or in parallel so as to cancel out the back electromotive force generated in each capacitor, and used as one capacitor.

〔作用〕[Effect]

したがって、２つのコンデンサ素子に発生する逆起電力
は、それぞれ逆方向の電圧が発生するので打ち消し合っ
てコンデンサの端子間には出力しなくなる。Therefore, the back electromotive force generated in the two capacitor elements is generated in opposite directions, so they cancel each other out and are not output between the terminals of the capacitor.

〔実施例〕〔Example〕

第１図に本発明による一実施例の概念を表す断面構成図
を示す。FIG. 1 shows a cross-sectional configuration diagram showing the concept of an embodiment according to the present invention.

図においてコンデンサ４は、誘電体１ａの両面に電極２
ａ、３ａを密着接合した素子５ａと、誘電体１ｂの両面
に電極２ｂ、３ｂを密着接合した素子５ｂとを、電極３
ａと電極２ｂが重なり合うように併設し、電極２ａと電
極３ｂを接続して端子６に、電極３ａと電極２ｂを接続
して端子７にそれぞれ接続し、素子５ａと素子５ｂを並
列接続にしている。そして併設した素子５ａと素子５ｂ
を被覆部材８で被包し、端子６．７を露出させて一つの
コンデンサ４を形成している。In the figure, a capacitor 4 has electrodes 2 on both sides of a dielectric 1a.
An element 5a in which electrodes 2b and 3a are closely bonded to each other and an element 5b in which electrodes 2b and 3b are closely bonded to both sides of a dielectric 1b are connected to electrode 3
A and electrode 2b are placed side by side so that they overlap, electrode 2a and electrode 3b are connected to terminal 6, electrode 3a and electrode 2b are connected to terminal 7, and element 5a and element 5b are connected in parallel. There is. And the attached element 5a and element 5b
is covered with a covering member 8, and terminals 6 and 7 are exposed to form one capacitor 4.

以上の構成によるコンデンサ４は、端子６と端子７０間
に加えた信号電圧により素子５ａ及び素子５ｂが同方向
に振動する。そしてその振動により逆起電力がそれぞれ
の素子の電極間に発生するが、それらを打ち消すように
電極を配線して端子６と端子７に接続しているので、端
子間には出力として現れない。In the capacitor 4 having the above configuration, the element 5a and the element 5b vibrate in the same direction due to the signal voltage applied between the terminal 6 and the terminal 70. Due to the vibration, a back electromotive force is generated between the electrodes of each element, but since the electrodes are wired and connected to terminals 6 and 7 so as to cancel this force, it does not appear as an output between the terminals.

また第２図に他の実施例の概念を表す断面構成図を示す
。Further, FIG. 2 shows a cross-sectional configuration diagram showing the concept of another embodiment.

図においてコンデンサ９は、素子５ａと素子５ｂの電極
３ａと３ｂが導通状態になるように併設し、電極２ａと
電極２ｂにそれぞれ端子６．端子７を接続した直列接続
としている。この場合も前述の実施例と同様に、電極間
に発生した逆起電力は打ち消し合って端子６．７の間に
出力しない。In the figure, a capacitor 9 is arranged so that electrodes 3a and 3b of an element 5a and an element 5b are electrically connected, and a terminal 6. The terminal 7 is connected in series. In this case as well, the back electromotive force generated between the electrodes cancels each other out and is not output between the terminals 6 and 7, as in the previous embodiment.

さらに他の実施例として、第３図に示す構成図にしでも
よい。As yet another embodiment, the configuration diagram shown in FIG. 3 may be used.

図において、コンデンサ１０とコンデンサ１１を第１図
や第２図に示した素子５ａ、５ｂと同じように考え、逆
起電力を打ち消すように２つのコンデンサの端子を並列
や直列に配線して用いてもよい。この場合、出来るだけ
２つのコンデンサを併設し、固定して用いた方が好まし
い。In the figure, capacitors 10 and 11 are considered to be the same as elements 5a and 5b shown in Figures 1 and 2, and the terminals of the two capacitors are wired in parallel or in series to cancel out the back electromotive force. It's okay. In this case, it is preferable to install two capacitors together and use them fixedly.

また、第４図に示すように上述の第１図から第３図に示
すコンデンサを基本構成にして、これらを複数個接続し
て１つの筐体に収納した構成としてもよい。この場合は
、容量や耐圧の大きいものが得られる。Alternatively, as shown in FIG. 4, the basic configuration may be the capacitors shown in FIGS. 1 to 3 described above, and a plurality of these may be connected and housed in one housing. In this case, one with large capacity and withstand voltage can be obtained.

〔発明の効果〕〔Effect of the invention〕

以上本発明によれば、コンデンサの端子間に印加した信
号電圧によって発生する歪み成分を減らすことができる
。As described above, according to the present invention, distortion components generated by a signal voltage applied between the terminals of a capacitor can be reduced.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の一実施例の概念を表す断面構成図、第
２図、第３図、第４図は本発明の他の実施例の概念を表
す断面構成図、第５図は従来技術を説明する説明図であ
る。 ４．９．１０．１１．１２・・・コンデンサ６．７・・
・端子FIG. 1 is a cross-sectional diagram showing the concept of one embodiment of the present invention, FIGS. 2, 3, and 4 are cross-sectional diagrams depicting the concept of other embodiments of the present invention, and FIG. 5 is a conventional It is an explanatory diagram explaining a technique. 4.9.10.11.12...Capacitor 6.7...
・Terminal

Claims (3)

【特許請求の範囲】[Claims] （１）圧電性を示す誘電体を介して電極を対向配置させ
たコンデンサにおいて、該コンデンサを２つ用いて、前
記圧電性を打ち消すように前記電極の一方の電極面どお
しを接合するとともに、他方の電極を直列、または並列
に配線し、一つの筐体に埋設したことを特徴とするコン
デンサ。(1) In a capacitor in which electrodes are arranged opposite to each other through a dielectric material exhibiting piezoelectricity, two of the capacitors are used, and one electrode surface of the electrodes is bonded together so as to cancel out the piezoelectricity. A capacitor characterized in that the other electrode is wired in series or in parallel and embedded in a single casing. （２）圧電性を示す誘電体を用いて構成した２つのコン
デンサの端子を、前記圧電性を打ち消すように直列また
は並列に配線するとともに、前記の２つのコンデンサを
併設して固着したことを特徴とするコンデンサ。(2) The terminals of two capacitors constructed using a dielectric material exhibiting piezoelectricity are wired in series or parallel so as to cancel out the piezoelectricity, and the two capacitors are installed and fixed together. capacitor. （３）請求項（１）や（２）に記載のコンデンサを基本
構成として、これらのコンデンサを複数個接続して筐体
内に収納したこと特徴とするコンデンサ。(3) A capacitor having a basic configuration of the capacitor according to claim (1) or (2), and which is characterized in that a plurality of these capacitors are connected and housed in a housing.