JPS6027522U - Choke coil that prevents induced noise in telephone lines - Google Patents
Choke coil that prevents induced noise in telephone linesInfo
- Publication number
- JPS6027522U JPS6027522U JP11867983U JP11867983U JPS6027522U JP S6027522 U JPS6027522 U JP S6027522U JP 11867983 U JP11867983 U JP 11867983U JP 11867983 U JP11867983 U JP 11867983U JP S6027522 U JPS6027522 U JP S6027522U
- Authority
- JP
- Japan
- Prior art keywords
- choke coil
- telephone lines
- induced noise
- prevents induced
- wound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Coils Or Transformers For Communication (AREA)
- Filters And Equalizers (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はインダクターを電話回線の各々に挿入した場合
のノイズ結合等価回路、第２図はコモンモードチョーク
コイルのノイズ結合等価回路、第３図はコモンモードチ
ョークコイルの信号に対する等節回路、第４図ａは、本
考案の一実施例の斜視図、第４図すはその等価回路図、
第５図はドラムコアの軸径とインピーダンスの周波数特
性の関係を示す図、第６図はドラムコアの軸長とインピ
ーダンスの周波数特性の関係を示す図、第７図はドラム
コアのツバ径とインピーダンスの関係ヲ示す図、第８図
は鉄心の透磁率とインピーダンスの周波数特性の関係を
示す図、第９図は巻数とインピーダンスの周波数特性の
関係を示す図である。 ′ａ・・・ツバ径、ｂ・
・・軸長、Ｃ・・・軸径、１・・・フェライト鉄心、２
・・・ポリウレタン銅線。
第３図
一−ｐ； −ｌ
ぐ１ν
第４図 １８、［
（ｂ） ｇ ｑ 泪
Ｍ 、Ｉ
■ ■
第５図
第６図
１ｂｌ−
周波数（ＭＨｚ）Figure 1 shows the noise coupling equivalent circuit when an inductor is inserted into each telephone line, Figure 2 shows the noise coupling equivalent circuit of the common mode choke coil, Figure 3 shows the equal node circuit for the signal of the common mode choke coil, 4a is a perspective view of an embodiment of the present invention, FIG. 4 is an equivalent circuit diagram thereof,
Figure 5 is a diagram showing the relationship between the drum core shaft diameter and impedance frequency characteristics, Figure 6 is a diagram showing the relationship between the drum core axial length and impedance frequency characteristics, and Figure 7 is the relationship between the drum core collar diameter and impedance. FIG. 8 is a diagram showing the relationship between the magnetic permeability of the iron core and the frequency characteristic of impedance, and FIG. 9 is a diagram showing the relationship between the number of turns and the frequency characteristic of impedance. 'a...Brim diameter, b.
...Shaft length, C...Shaft diameter, 1...Ferrite core, 2
...Polyurethane copper wire. Figure 3 1-p; -l gu1ν Figure 4 18, [ (b) g q tears M, I
Claims (1)
れる電波妨害を防止するチョークコイルにおいて、チョ
ークコイルのインダクターが、外径１５ｒｎ！ＩＬ以下
、−長さ１２ＴｒｒＩｎ以下で外周に円環状溝を有する
ドラム型フェライト磁心に、該溝中に、巻線をバイファ
イラ巻き又は分離巻きして構成されていることを特徴と
する電話回線の誘導雑音を防止するチョークコイル。In a choke coil that prevents radio interference induced in telephone lines to which telephones and data communication equipment are connected, the inductor of the choke coil has an outer diameter of 15 rn! A telephone line guidance system comprising a drum-shaped ferrite magnetic core having a length of 12TrrIn or less and having an annular groove on the outer periphery, with a winding bifilar-wound or separately wound in the groove. Choke coil to prevent noise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11867983U JPS6027522U (en) | 1983-08-01 | 1983-08-01 | Choke coil that prevents induced noise in telephone lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11867983U JPS6027522U (en) | 1983-08-01 | 1983-08-01 | Choke coil that prevents induced noise in telephone lines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6027522U true JPS6027522U (en) | 1985-02-25 |
| JPH0452969Y2 JPH0452969Y2 (en) | 1992-12-14 |
Family
ID=30272681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11867983U Granted JPS6027522U (en) | 1983-08-01 | 1983-08-01 | Choke coil that prevents induced noise in telephone lines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6027522U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5880809A (en) * | 1981-11-10 | 1983-05-16 | Nippon Ferrite Ltd | Inductance element |
-
1983
- 1983-08-01 JP JP11867983U patent/JPS6027522U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5880809A (en) * | 1981-11-10 | 1983-05-16 | Nippon Ferrite Ltd | Inductance element |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0452969Y2 (en) | 1992-12-14 |
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