JPS6315619U

JPS6315619U -

Info

Publication number: JPS6315619U
Application number: JP10777486U
Authority: JP
Priority date: 1986-07-14
Filing date: 1986-07-14
Publication date: 1988-02-02

Description

[Brief explanation of the drawing]

第１Ａ図および第１Ｂ図は、それぞれ、この考
案の一実施例を示し、第１Ａ図はその正面図であ
り、第１Ｂ図はその背面図である。第２図は第１
Ａ図および第１Ｂ図に示す実施例の等価回路を示
す図である。第３図は第１Ａ図および第１Ｂ図に
示す実施例と第９図に示す従来例との周波数特性
を示すグラフである。第４図は第１Ａ図および第
１Ｂ図に示す実施例の変形例を示す正面図である
。第５図は第１Ａ図および第１Ｂ図に示す実施例
の他の変形例を示すす正面図である。第６Ａ図お
よび第６Ｂ図は、それぞれ、この考案の他の実施
例を示し、第６Ａ図はその正面図であり、第６Ｂ
図はその背面図である。第７図は第６Ａ図および
第６Ｂ図に示す実施例の等価回路および示す図で
ある。第８図はＬ型回路の等価回路を示す図であ
る。第９図は従来のＬＣフイルタの一例を示す正
面図である。図において、１０はＬＣフイルタ、１２は基板
、１２ａ，１２ｂ，１２ｃおよび１２ｄはスルー
ホール、１４ａ，１４ｂ，１４ｃおよび１４ｄは
コイルパターン、１６ａ，１６ｂ，１６および１
６′は接続電極、２０，２０ａ，２０ｂおよび２
２はコンデンサ電極、２４，２６は入出力リード
端子、２８はアースリード端子を示す。 FIGS. 1A and 1B each show an embodiment of this invention, with FIG. 1A being a front view thereof and FIG. 1B being a rear view thereof. Figure 2 is the first
FIG. 1B is a diagram showing an equivalent circuit of the embodiment shown in FIG. A and FIG. 1B. FIG. 3 is a graph showing the frequency characteristics of the embodiment shown in FIGS. 1A and 1B and the conventional example shown in FIG. FIG. 4 is a front view showing a modification of the embodiment shown in FIGS. 1A and 1B. FIG. 5 is a front view showing another modification of the embodiment shown in FIGS. 1A and 1B. 6A and 6B respectively show other embodiments of this invention, FIG. 6A is a front view thereof, and FIG. 6B is a front view thereof.
The figure is its rear view. FIG. 7 is an equivalent circuit diagram of the embodiment shown in FIGS. 6A and 6B. FIG. 8 is a diagram showing an equivalent circuit of an L-type circuit. FIG. 9 is a front view showing an example of a conventional LC filter. In the figure, 10 is an LC filter, 12 is a substrate, 12a, 12b, 12c and 12d are through holes, 14a, 14b, 14c and 14d are coil patterns, 16a, 16b, 16 and 1
6' is a connection electrode, 20, 20a, 20b and 2
2 is a capacitor electrode, 24 and 26 are input/output lead terminals, and 28 is a ground lead terminal.

Claims

[Claims for Utility Model Registration] A substrate; one end of each of a pair of spiral coil patterns formed on one surface of the substrate is connected to the other surface of the substrate through a pair of through holes provided in the substrate. an inductor formed by connecting one end of each of the pair of coil patterns with a connection electrode formed on the other surface of the substrate; and an inductor formed on the substrate so as to be connected to the inductor. An LC filter, comprising: a capacitor provided; and a lead terminal connected to the inductor and the capacitor.