JPH037288B2 - - Google Patents
Info
- Publication number
- JPH037288B2 JPH037288B2 JP59005023A JP502384A JPH037288B2 JP H037288 B2 JPH037288 B2 JP H037288B2 JP 59005023 A JP59005023 A JP 59005023A JP 502384 A JP502384 A JP 502384A JP H037288 B2 JPH037288 B2 JP H037288B2
- Authority
- JP
- Japan
- Prior art keywords
- coil
- pass filter
- low
- ground wire
- winding
- 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.)
- Expired - Lifetime
Links
- 238000004804 winding Methods 0.000 claims description 11
- 239000003990 capacitor Substances 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0115—Frequency selective two-port networks comprising only inductors and capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Filters And Equalizers (AREA)
- Coils Or Transformers For Communication (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明はコイル部とコンデンサ部にて構成され
るLCローパスフイルターに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an LC low-pass filter composed of a coil section and a capacitor section.
従来例の構成とその問題点
従来より使用されているLCローパスフイルタ
ーは第１図に示すような等価回路でコイル部Ｌと
コンデンサ部Ｃより構成されているが、素子数、
形状、遅延時間等に制限がある場合、所定の減衰
極（f∞1）の減衰量をコントロールすることが不
可能であり、所定の周波数振幅特性を実現できな
い場合が多々あつた。Conventional configuration and its problems The conventional LC low-pass filter has an equivalent circuit as shown in Figure 1, consisting of a coil section L and a capacitor section C, but the number of elements,
When there are restrictions on the shape, delay time, etc., it is impossible to control the amount of attenuation of a predetermined attenuation pole (f ∞1 ), and it is often impossible to achieve a predetermined frequency amplitude characteristic.
図中、L1〜Loはコイル部、C1〜Co-1はコンデ
ンサ部、Ｅはアースラインである。 In the figure, L 1 to Lo are coil parts, C 1 to Co-1 are capacitor parts, and E is a ground line.
発明の目的
本発明はこれらの点に鑑み、素子数や形状、遅
延時間等を変更することなく、所定の周波数振幅
特性を実現するLCローパスフイルターを提供す
ることを目的とするものである。OBJECTS OF THE INVENTION In view of these points, it is an object of the present invention to provide an LC low-pass filter that realizes predetermined frequency amplitude characteristics without changing the number of elements, shape, delay time, etc.
発明の構成
上記目的を達成するために本発明のLCローパ
スフイルターは、Ｔ型構成を基本としたコイル部
とコンデンサ部よりなり、Ｔ型を構成している前
部又は後部に位置するコイル部の上にそのコイル
部の巻線方向と同一巻線方向に１ターン以上のア
ース線を１個所のみ巻回して構成され、この構成
とすることにより、素子数、形状や遅延時間を変
えることなく所定の周波数振幅特性を得られるこ
とになる。Structure of the Invention In order to achieve the above object, the LC low-pass filter of the present invention consists of a coil part and a capacitor part based on a T-shaped configuration, and the coil part located at the front or rear part of the T-shaped configuration. It is constructed by winding a ground wire of one turn or more in only one place in the same winding direction as the winding direction of the coil part.With this configuration, the specified number of elements, shape, and delay time can be maintained without changing the number of elements, shape, or delay time. This results in a frequency amplitude characteristic of .
実施例の発明
以下、本発明の実施例を図面第２図〜第４図に
より説明する。Embodiments of the Invention Hereinafter, embodiments of the present invention will be described with reference to FIGS. 2 to 4 of the drawings.
本発明は第２図に示すように、コンデンサ挿入
用凹部１を有するツバ２を多数設けた同軸多連型
巻回ボビン３のツバ２間に２個のコイル部４，５
と上記ツバ２の凹部１に収納した１個のコンデン
サ部６を基本としたＴ型LCローパスフイルター
において、Ｔ型を構成する前部コイル４、又は後
部コイル５のいずれか一方の上にアース線７を１
ターン以上重ね巻いたもので８は端子ピンを示
す。第３図で示すように自己共振でえる減衰極
（f∞2）を自由にコントロールすることができるこ
とを究明した。 As shown in FIG. 2, the present invention provides a coaxial multiple winding bobbin 3 having a plurality of flanges 2 each having a concave portion 1 for inserting a capacitor.
In a T-type LC low-pass filter based on one capacitor section 6 housed in the recess 1 of the brim 2, a ground wire is connected to either the front coil 4 or the rear coil 5 that constitutes the T-shape. 7 to 1
The number 8 indicates a terminal pin, which is wrapped in more than one turn. As shown in Figure 3, we have discovered that the attenuation pole (f ∞2 ) produced by self-resonance can be freely controlled.
第４図は第３図において、アース線７の巻数を
変化させた場合の周波数振幅特性を示す。第４図
中Ａはアース線７を１ターン巻いた場合、Ｂはア
ース線７を３ターン巻いた場合、Ｃはアース線７
を７ターン巻いた場合の周波数振幅特性である。 FIG. 4 shows frequency amplitude characteristics when the number of turns of the ground wire 7 in FIG. 3 is changed. In Figure 4, A shows the case where the ground wire 7 is wound with one turn, B shows the case where the ground wire 7 is wound with three turns, and C shows the case where the ground wire 7 is wound with 3 turns.
This is the frequency amplitude characteristic when wound with 7 turns.
第４図で示されるようにアース線７の増減によ
つてコイル自体のインダクタンスＬと浮遊容量Ｃ
によつてできる自己共振減衰極（f∞2）を自由に
コトロールすることができ素子数を増加すること
なく、所定減衰極（f∞1）の減衰量を大にするこ
とが可能であることは明白である。 As shown in Figure 4, the inductance L and stray capacitance C of the coil itself change depending on the increase or decrease of the ground wire 7.
It is possible to freely control the self-resonant attenuation pole (f ∞2 ) created by is obvious.
また、この構成（アース線７の増減）において
は所定減衰極（f∞1）の減衰量を大にしてもカツ
トオフ周波数（fc）の減衰量をほとんど変化させ
ることはない。 Furthermore, in this configuration (increasing or decreasing the number of ground wires 7), even if the attenuation amount of the predetermined attenuation pole (f ∞1 ) is increased, the attenuation amount of the cutoff frequency (f c ) hardly changes.
本発明において種々の場合について検討した
が、本発明の特徴はＴ型構成をしたコイル部の前
部又は後部のどちらか一方に１ターン以上、アー
ス線をそのコイル部と同一巻方向に巻くことであ
り、その巻き方向を逆にすれば、この効果は得ら
れない。又、Ｔ型を構成する前コイル、後コイル
の両方同時に入れてもこの結果は得られず、どち
らか一方のコイル部の上にアース線を１ターン以
上重ね巻くことが重要である。 Various cases have been studied in the present invention, and the feature of the present invention is that the ground wire is wound in the same winding direction as the coil portion for one turn or more at either the front or rear of the T-shaped coil portion. If the winding direction is reversed, this effect cannot be obtained. Furthermore, this result cannot be obtained even if both the front coil and the rear coil constituting the T-shape are inserted at the same time, and it is important to wrap the ground wire over one turn or more over one of the coil parts.
発明の効果
以上のように本発明はアース線の増減といつた
簡単な手段により、素子数、形状、遅延時間等を
変化させることなく、所定の周波数振幅特性を得
ることが可能となり、その産業的効果は大なるも
のがある。Effects of the Invention As described above, the present invention makes it possible to obtain a predetermined frequency and amplitude characteristic by simple means such as increasing or decreasing the number of ground wires without changing the number of elements, shape, delay time, etc. The effects are significant.
第１図は一般的なローパスフイルターの等価回
路図、第２図は本発明のLCローパスフイルター
の一実施例における要部の斜視図、第３図は一般
的なLCローパスフイルターの周波数振幅特性図、
第４図はＴ型を基本としたLCローパスフイルタ
ーにおいて、アース巻線を変化した場合の周波数
振幅特性図である。
１……コンデンサ挿入用凹部、２……ツバ、３
……同軸多連型巻回ボビン、４……前部コイル
部、５……後部コイル部、６……コンデンサ部、
７……アース線。
Fig. 1 is an equivalent circuit diagram of a general low-pass filter, Fig. 2 is a perspective view of essential parts in an embodiment of the LC low-pass filter of the present invention, and Fig. 3 is a frequency-amplitude characteristic diagram of a general LC low-pass filter. ,
FIG. 4 is a frequency amplitude characteristic diagram when the ground winding is changed in a T-type LC low-pass filter. 1... Recess for capacitor insertion, 2... Collar, 3
... Coaxial multiple winding bobbin, 4 ... Front coil section, 5 ... Rear coil section, 6 ... Capacitor section,
7...Earth wire.
Claims (1)
部よりなり、Ｔ型を構成している前部又は後部に
位置するいずれか一方のコイル部の上に、このコ
イル部の巻線方向と同一巻線方向に１ターン以上
のアース線を巻回してなるLCローパスフイルタ
ー。1 Consisting of a coil part and a capacitor part based on a T-shaped configuration, on either the front or rear part of the T-shaped coil part, there is a winding in the same direction as the winding direction of this coil part. An LC low-pass filter made by winding a ground wire with one or more turns in the line direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP502384A JPS60148212A (en) | 1984-01-13 | 1984-01-13 | Lc low pass filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP502384A JPS60148212A (en) | 1984-01-13 | 1984-01-13 | Lc low pass filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60148212A JPS60148212A (en) | 1985-08-05 |
| JPH037288B2 true JPH037288B2 (en) | 1991-02-01 |
Family
ID=11599905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP502384A Granted JPS60148212A (en) | 1984-01-13 | 1984-01-13 | Lc low pass filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60148212A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63261906A (en) * | 1987-04-20 | 1988-10-28 | Matsushita Electric Ind Co Ltd | Noise elimination filter |
| JP4741222B2 (en) * | 2004-11-26 | 2011-08-03 | 大日本印刷株式会社 | Two container combination and container |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5440429A (en) * | 1977-09-01 | 1979-03-29 | Caterpillar Tractor Co | Track assemblied body |
| JPS5412341B2 (en) * | 1974-10-30 | 1979-05-22 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5412341U (en) * | 1977-06-28 | 1979-01-26 |
-
1984
- 1984-01-13 JP JP502384A patent/JPS60148212A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5412341B2 (en) * | 1974-10-30 | 1979-05-22 | ||
| JPS5440429A (en) * | 1977-09-01 | 1979-03-29 | Caterpillar Tractor Co | Track assemblied body |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60148212A (en) | 1985-08-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |