JPH065342U - Communication protector - Google Patents
Communication protectorInfo
- Publication number
- JPH065342U JPH065342U JP051060U JP5106092U JPH065342U JP H065342 U JPH065342 U JP H065342U JP 051060 U JP051060 U JP 051060U JP 5106092 U JP5106092 U JP 5106092U JP H065342 U JPH065342 U JP H065342U
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- Prior art keywords
- filter
- distributor
- line
- input terminal
- capacitor
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- 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
- 230000006854 communication Effects 0.000 title claims abstract description 30
- 230000001012 protector Effects 0.000 title claims abstract description 30
- 239000003990 capacitor Substances 0.000 claims abstract description 30
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 9
- 230000008030 elimination Effects 0.000 claims description 6
- 238000003379 elimination reaction Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000007175 bidirectional communication Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- Emergency Protection Circuit Devices (AREA)
Abstract
(57)【要約】 （修正有）
【目的】二分配形通信用保安器における不要周波数除去
用フィルターの絶縁耐圧を向上し、上記保安器を健全に
働かすようにした。
【構成】二分配形通信用保安器の出力端子からの上り信
号と入力端子ＩＮからの下り信号に含まれる高圧直流成
分を不要周波数除去フィルターＦの前後に接続した第
１、第２コンデンサーＣ1、Ｃ2によって除去するように
構成した。
(57) [Summary] (Correction) [Purpose] The dielectric strength of the filter for removing unnecessary frequencies in the two-distribution type communication protector has been improved so that the above protector works properly. [Structure] First and second capacitors C 1 in which a high-voltage DC component included in an upstream signal from an output terminal of a two-distributor type communication protector and a downstream signal from an input terminal IN is connected before and after an unnecessary frequency removing filter F 1. , C 2 for removal.
Description
【０００１】[0001]
本考案は入力端子に対し出力端子を二分配し、例えば一方の出力端子に双方向 通信における端末機等を、他方の出力端子にテレビ等を夫々接続し得るようにし た通信用保安器に関する。 The present invention relates to a communication protector in which two output terminals are divided into two input terminals, so that one output terminal can be connected to a terminal or the like for bidirectional communication, and the other output terminal can be connected to a television or the like.
【０００２】[0002]
実開平４−２１７１号公報は図４に示すように、入力端子ＩＮに対し第１、第 ２出力端子ＯＵＴ1、ＯＵＴ2を分配器ＤＴを介し二分配し、入力端子ＩＮと分配 器ＤＴ間の線路にハイパスフィルターＨＦを、第１出力端子ＯＵＴ1と分配器Ｄ Ｔ間にバンドパスフィルターＢＦを夫々接続し、分配器ＤＴと上記各フィルター ＨＦ、ＢＦ間の線路にコンデンサーＣ1、Ｃ2を接続し、更に入力端子ＩＮとハイ パスフィルター間の線路に避雷器Ａの一端を接続した、双方向通信形の二分配形 通信用保安器を示している。In Japanese Utility Model Laid-Open No. 4-2171, as shown in FIG. 4, the first and second output terminals OUT 1 and OUT 2 are distributed to the input terminal IN via a distributor DT, and the input terminal IN and the distributor DT are connected to each other. , And a bandpass filter BF between the first output terminal OUT 1 and the distributor DT, respectively, and capacitors C 1 , C 2 on the line between the distributor DT and each of the filters HF, BF. The figure shows a two-way communication type two-distribution type communication protector in which one end of the arrester A is connected to the line between the input terminal IN and the high-pass filter.
【０００３】[0003]
然しながら、上記保安器においては、第１出力端子ＯＵＴ1からの上り信号に 含まれる高圧直流成分及び入力端子ＩＮからの下り信号に含まれる高圧直流成分 が直接バンドパスフィルターＢＦ及びハイパスフィルターＨＦに印加され、各フ ィルターＢＦ、ＨＦを破損する恐れを有し、所期の機能を充分に発揮しない問題 を内在している。However, in the above protector, the high voltage DC component contained in the upstream signal from the first output terminal OUT 1 and the high voltage DC component contained in the downstream signal from the input terminal IN are directly applied to the band pass filter BF and the high pass filter HF. However, there is a risk that the filters BF and HF will be damaged, and there is an inherent problem that the desired function is not fully exerted.
【０００４】 殊に上記フィルターＨＦ、ＢＦは絶縁耐圧に劣り高圧のインパルス（高圧直流 成分）に脆弱であり、その対策が充分でないと所期の機能を適正に果すことが困 難である。In particular, the filters HF and BF are inferior in withstand voltage and are vulnerable to high-voltage impulses (high-voltage DC components), and it is difficult to properly perform their intended functions unless adequate countermeasures are taken.
【０００５】[0005]
本考案は上記問題点を有効に解決し、上記フィルター内蔵形の二分配形通信用 保安器を適正に機能させるようにしたものであり、その手段として、上記二分配 形通信用保安器の出力端子からの上り信号に含まれる高圧直流成分をフィルター の出力端子側において除去する第１コンデンサーを設けると共に、入力端子から の下り信号に含まれる高圧直流成分をフィルターの入力端子側において除去する 第２コンデンサーを設ける構成としたものである。 The present invention effectively solves the above-mentioned problems and allows the two-distribution type communication protector with a built-in filter to function properly. As a means thereof, the output of the two-distribution type communication protector is used. A high voltage DC component included in the upstream signal from the terminal is removed at the output terminal side of the filter, and a high voltage DC component included in the downstream signal from the input terminal is removed at the input terminal side of the filter. The configuration is such that a condenser is provided.
【０００６】 又本考案は上記第２コンデンサーを避雷器とチョークコイルの接続点間に接続 する構成としたものである。Further, the present invention is configured such that the second capacitor is connected between the connection points of the lightning arrester and the choke coil.
【０００７】[0007]
本考案によれば出力端子からの上り信号に含まれる高圧直流成分と、入力端子 からの下り信号に含まれる高圧直流成分とを第１、第２コンデンサーにて有効に 除去して上記フィルターを保護し、上記二分配形通信用保安器の機能を遺憾なく 発揮させる。 According to the present invention, the high voltage DC component contained in the upstream signal from the output terminal and the high voltage DC component contained in the downstream signal from the input terminal are effectively removed by the first and second capacitors to protect the above filter. However, the functions of the above two-distributor type communication protector will be fully demonstrated.
【０００８】 又上記第２コンデンサーを避雷器とチョークコイルの接続点間の線路に挿入す ることにより、避雷器とチョークコイルとを所定の動作順位において適正に動作 させる。Further, by inserting the second capacitor in the line between the connection points of the arrester and the choke coil, the arrester and the choke coil are properly operated in a predetermined operation order.
【０００９】[0009]
図１乃至図３は本考案の第１乃至第３実施例を示しており、以下各実施例に付 き詳述する。 1 to 3 show first to third embodiments of the present invention, which will be described in detail below.
【００１０】 第１実施例（図１参照） 入力端子ＩＮに対し第１出力端子ＯＵＴ1と第２出力端子ＯＵＴ2を分配器ＤＴ を介し二分配し、例えば第１出力端子ＯＵＴ1に双方向通信における端末機等を 、又第２出力端子ＯＵＴ2に家庭用テレビ等を接続し得るようにし、上記第２出 力端子ＯＵＴ2と分配器ＤＴ間の線路に不要周波数除去フィルターＦを接続し、 上記入力端子ＩＮと分配器ＤＴ間の線路に避雷器ＡとチョークコイルＬを前者を 前段に後者を後段にし並列接続する。First Embodiment (see FIG. 1) The first output terminal OUT 1 and the second output terminal OUT 2 are divided into two via a distributor DT with respect to the input terminal IN, and for example, bidirectional to the first output terminal OUT 1 . A terminal for communication is connected to the second output terminal OUT 2 and a home television is connected to the second output terminal OUT 2 , and an unnecessary frequency elimination filter F is connected to the line between the second output terminal OUT 2 and the distributor DT. A lightning arrester A and a choke coil L are connected in parallel to the line between the input terminal IN and the distributor DT with the former as the former stage and the latter as the latter stage.
【００１１】 上記フィルターＦは例えばハイパスフィルター、ローパスフィルター、バンド パスフィルターであり、目的に応じ選択する。The filter F is, for example, a high pass filter, a low pass filter or a band pass filter, and is selected according to the purpose.
【００１２】 現在パソコン通信等における端末機と親機間の交信には１０〜５０Ｈｚが専用 帯域となっており、他方テレビ、ＦＭ、ＵＨＦ等においては７０〜７７０Ｈｚが 用いられているが、又上記１０〜５０Ｈｚの帯域においては最も流合雑音が入り 易いが、本考案は例えば上記フィルターＦとしてハイパスフィルターを挿入する ことにより上記１０〜５０Ｈｚとそれに含まれる流合雑音を有効に除去し、これ らを出力端子に接続されたテレビ等から外部（双方向通信における親機）へ流出 するのを有効に防止する。Currently, a dedicated band of 10 to 50 Hz is used for communication between a terminal device and a master device in personal computer communication and the like, while 70 to 770 Hz is used in televisions, FM, UHF, etc. The ingress noise is most likely to enter in the band of 10 to 50 Hz, but the present invention effectively removes the ingress noise contained in the above 10 to 50 Hz by inserting a high-pass filter as the filter F, for example. This effectively prevents the data from leaking to the outside (main device in two-way communication) from a TV connected to the output terminal.
【００１３】 上記通信用保安器において、上記第２出力端子ＯＵＴ2とフィルターＦ間の線 路に上り信号に含まれる高圧直流成分除去用の第１コンデンサーＣ1を接続する と共に、上記入力端子ＩＮと分配器ＤＴ間の線路に下り信号に含まれる高圧直流 成分除去用の第２コンデンサーＣ2を接続する。In the communication protector, a first capacitor C 1 for removing a high-voltage DC component contained in an upstream signal is connected to a line between the second output terminal OUT 2 and the filter F, and the input terminal IN is connected. The second capacitor C 2 for removing the high-voltage DC component contained in the downstream signal is connected to the line between the switch and the distributor DT.
【００１４】 上記第１、第２コンデンサーＣ1、Ｃ2は上りと下りの信号に重畳される高圧イ ンパルス等の高圧直流成分を除去し、上記フィルターＦを保護する機能を有して いる。入力端子ＩＮからは避雷器Ａを動作させない種々の直流ノイズ成分が流入 し、又第２出力端子ＯＵＴ2からは機器（例えばテレビ）等のトラブルによって 発生する異常高電圧等の高圧直流成分が流入し、この高圧直流成分を上記第１、 第２コンデンサーＣ1、Ｃ2によって有効に除去し、フィルターＦを保護する。こ れによって上記二分配形通信用保安器を健全に実施させる。The first and second capacitors C 1 and C 2 have a function of removing a high voltage DC component such as a high voltage impulse superimposed on an upstream signal and a downstream signal and protecting the filter F. Various DC noise components that do not operate the lightning arrester A flow in from the input terminal IN, and high voltage DC components such as abnormal high voltage generated by troubles in equipment (eg, TV) flow in from the second output terminal OUT 2. The high-voltage DC component is effectively removed by the first and second capacitors C 1 and C 2 to protect the filter F. As a result, the above-mentioned two-distributor type communication protector is implemented soundly.
【００１５】 殊に前記フィルターＦは絶縁耐圧に劣り、高電圧に対し脆弱であるが、上記第 １、第２コンデンサーＣ1、Ｃ2はその耐圧性能を向上してパソコン通信等の一般 化に応じ汎用されて来ている上記二分配形通信用保安器の実用化を促進する。In particular, the filter F is inferior in withstand voltage and is vulnerable to high voltage. However, the first and second capacitors C 1 and C 2 have improved withstand voltage performance and are popularized in personal computer communication and the like. Accordingly, the practical application of the above-mentioned two-distribution type communication protector, which has been widely used, is promoted.
【００１６】 又第２コンデンサーＣ2は上記避雷器ＡとチョークコイルＬの優先動作順位を 保証する機能を有する。The second capacitor C 2 has a function of guaranteeing the priority operation order of the lightning arrester A and the choke coil L.
【００１７】 従来の保安器においては雷サージが到来するとチョークコイルＬの方が避雷器 Ａより応答速度が早いので、先に働いてしまい避雷器Ａが機能しない恐れを有し ている。本考案においては第２コンデンサーＣ2を避雷器ＡとチョークコイルＬ の接続点間に挿入することによって、第２コンデンサーＣ2のインピーダンスに より避雷器Ａを確実に先行動作させて高電圧を除去し、次でチョークコイルＬで 残留電圧を除去することができ、保安器ＡとチョークコイルＬの本来の挿入目的 を有効に達成できる。In the conventional protector, when a lightning surge arrives, the choke coil L has a faster response speed than the lightning arrester A, and thus there is a risk that the lightning arrester A does not function and operates earlier. In the present invention by inserting the second capacitor C 2 between the connection point of the arrester A and the choke coil L, and a high voltage is removed reliably by advanced operation more surge arrester A to a second impedance of the capacitor C 2, Then, the residual voltage can be removed by the choke coil L, and the original purpose of inserting the protector A and the choke coil L can be effectively achieved.
【００１８】 図１においては第１出力端子ＯＵＴ1と分配器ＤＴ間の線路に入力端子ＩＮと 出力端子ＯＵＴ1間における高圧直流成分を除去するコンデンサーＣ1′を接続し ている。In FIG. 1, a capacitor C 1 ′ for removing a high-voltage DC component between the input terminal IN and the output terminal OUT 1 is connected to the line between the first output terminal OUT 1 and the distributor DT.
【００１９】 又上記分配器ＤＴとフィルターＦ間に、第１、第２出力端子ＯＵＴ1、ＯＵＴ2 の両分配線路間を短絡する抵抗Ｒを接続する。この抵抗Ｒは両分配線路を通過す る信号のバランスを補正する分配線路バランス用抵抗となっている。即ち上記抵 抗Ｒを上記位置に挿入することによって、入力端子ＩＮと出力端子ＯＵＴ1、Ｏ ＵＴ2間のインピーダンスの不整合を解消し、フィルターＦを通過する周波数帯 域に狂いを生ずるのを防止する手段となっている。A resistor R that short-circuits the distribution lines of the first and second output terminals OUT 1 and OUT 2 is connected between the distributor DT and the filter F. This resistor R is a distribution line balancing resistor that corrects the balance of signals passing through both distribution lines. That is, by inserting the resistor R into the above position, the impedance mismatch between the input terminal IN and the output terminals OUT 1 and OUT 2 is eliminated, and the frequency band passing through the filter F is disturbed. It is a means to prevent.
【００２０】 第２実施例（図２参照） この実施例は図１に示す第２コンデンサーＣ2をフィルターＦと分配器ＤＴ間 の線路に接続しており、その他の構成は第１実施例と同様である。勿論第１実施 例におけるコンデンサーＣ2と第２実施例におけるコンデンサーＣ2を併用するこ とを妨げない。Second Embodiment (see FIG. 2) In this embodiment, the second capacitor C 2 shown in FIG. 1 is connected to the line between the filter F and the distributor DT, and other configurations are the same as those of the first embodiment. It is the same. Of course not interfere with the combination child condenser C 2 and the condenser C 2 in the second example of the first embodiment.
【００２１】 第２実施例におけるコンデンサーＣ2と第１実施例におけるコンデンサーＣ2と の相違点は後者のコンデンサーが前記の如く避雷器ＡとチョークコイルＬの動作 順位を設定する手段としても機能していることである。The difference from the condenser C 2 and the condenser C 2 in the first embodiment of the second embodiment also functions as a means for the latter capacitors for setting the operation order of the above as arrester A and the choke coil L It is that you are.
【００２２】 第３実施例（図３参照） この実施例においては入力端子ＩＮに対し、第１出力端子ＯＵＴ1と第２出力 端子ＯＵＴ2を分配器ＤＴを介し二分配し、この分配器ＤＴと入力端子ＩＮ間の 線路に不要周波数除去フィルターＦを接続し、該フィルターＦと入力端子ＩＮ間 の線路に避雷器ＡとチョークコイルＬの一端を並列接続し、二分配形通信用保安 器を構成している。Third Embodiment (see FIG. 3) In this embodiment, the first output terminal OUT 1 and the second output terminal OUT 2 are divided into two via the distributor DT with respect to the input terminal IN, and the distributor DT is divided into two parts. The unnecessary frequency elimination filter F is connected to the line between the input terminal IN and the input terminal IN, and the surge arrester A and one end of the choke coil L are connected in parallel to the line between the filter F and the input terminal IN to form a two-distributor type communication protector. is doing.
【００２３】 上記通信用保安器において、第１出力端子ＯＵＴ1と分配器ＤＴ間の分配線路 、及び第２出力端子ＯＵＴ2と分配器ＤＴ間の分配線路に夫々前記第１コンデン サーＣ1を接続すると共に、上記入力端子ＩＮとフィルターＦ間の線路の避雷器 ＡとチョークコイルＬの接続点間に前記第２コンデンサーＣ2を接続する。In the communication protector, the first capacitor C 1 is provided on each of the distribution line between the first output terminal OUT 1 and the distributor DT and the distribution line between the second output terminal OUT 2 and the distributor DT. In addition to the connection, the second capacitor C 2 is connected between the connection point of the arrester A and the choke coil L on the line between the input terminal IN and the filter F.
【００２４】 上記第１、第２コンデンサーＣ1、Ｃ2は前記第１実施例と同様、上り信号と下 り信号に含まれる高圧直流成分を有効に除去し、フィルターＦを保護する手段と なっている。Similar to the first embodiment, the first and second capacitors C 1 and C 2 serve as means for effectively removing the high voltage DC component contained in the up signal and the down signal and protecting the filter F. ing.
【００２５】 又上記第１コンデンサーＣ1、Ｃ1と分配器ＤＴ間に第１、第２出力端子ＯＵＴ 1 、ＯＵＴ2の両分配線路間を短絡する抵抗Ｒを接続し、第１実施例と同様両分配 線路を通過する信号のバランスを補正する手段とする。Further, the first condenser C1, C1And the distributor DT between the first and second output terminals OUT 1 , OUT2A resistor R for short-circuiting the two distribution lines is connected to provide a means for correcting the balance of signals passing through both distribution lines as in the first embodiment.
【００２６】[0026]
本考案によれば第１、第２コンデンサーによって入力端子からの上り信号又は 下り信号に含まれる高圧直流成分を有効に除去し、フィルターＦの機能ひいては 二分配形通信用保安器の機能を遺憾なく発揮させることができる。 According to the present invention, the first and second capacitors effectively remove the high-voltage DC component contained in the up signal or the down signal from the input terminal, so that the function of the filter F and the function of the two-distributor type communication protector are fully appreciated. Can be demonstrated.
【００２７】 又避雷器とチョークコイルの動作順位を第２コンデンサーの挿入位置によって 確実に設定して両者の本来の挿入目的を適正に果し、保安器の信頼性、保安器の 主たる保安機能を健全に発揮させることができる。Further, the operation order of the arrester and the choke coil is surely set by the insertion position of the second capacitor to properly fulfill the original purpose of insertion of both, and the reliability of the protector and the main security function of the protector are sound. Can be demonstrated.
【図１】本考案の第１実施例を示す二分配形通信用保安
器の回路図である。FIG. 1 is a circuit diagram of a two-distribution type communication protector showing a first embodiment of the present invention.
【図２】同第２実施例を示す同回路図である。FIG. 2 is a circuit diagram showing the same second embodiment.
【図３】同第３実施例を示す同回路図である。FIG. 3 is a circuit diagram showing the same third embodiment.
【図４】従来の二分配形通信用保安器を示す回路図であ
る。FIG. 4 is a circuit diagram showing a conventional two-distribution type communication protector.
ＩＮ 入力端子 ＯＵＴ1 第１出力端子 ＯＵＴ2 第２出力端子 ＤＴ 分配器 Ｆ 不要周波数除去フィルター Ｃ1 第１コンデンサー Ｃ2 第２コンデンサー Ａ 避雷器 Ｌ チョークコイル Ｒ 分配線路バランス用抵抗IN input terminal OUT 1 1st output terminal OUT 2 2nd output terminal DT Distributor F Unnecessary frequency elimination filter C 1 1st capacitor C 2 2nd capacitor A Lightning arrester L Choke coil R Distribution line balancing resistor
Claims (5)
ＵＴ1、ＯＵＴ2を分配器ＤＴを介し二分配し、上記第２
出力端子ＯＵＴ2と分配器ＤＴ間の線路に不要周波数除
去フィルターＦを接続し、入力端子ＩＮと分配器ＤＴ間
の線路に避雷器ＡとチョークコイルＬを並列して接続し
て成る通信用保安器において、上記フィルターＦと第２
出力端子ＯＵＴ2間の線路に上り信号に含まれる高圧直
流成分を除去し上記フィルターＦを保護する第１コンデ
ンサーＣ1を接続すると共に、上記入力端子ＩＮと分配
器ＤＴ間の線路の避雷器ＡとチョークコイルＬの接続点
間に下り信号に含まれる高圧直流成分を除去し上記フィ
ルターＦを保護する第２コンデンサーＣ2を接続したこ
とを特徴とする通信用保安器。1. A first output terminal O and a second output terminal O for an input terminal IN.
UT 1 and OUT 2 are divided into two through a distributor DT, and the second
A communication protector in which an unnecessary frequency elimination filter F is connected to the line between the output terminal OUT 2 and the distributor DT, and a lightning arrester A and a choke coil L are connected in parallel to the line between the input terminal IN and the distributor DT. In the filter F and the second
The line between the output terminal OUT 2 and the first capacitor C 1 for removing the high voltage DC component contained in the upstream signal and protecting the filter F are connected, and the line arrester A between the input terminal IN and the distributor DT is connected to the line. A communication protector characterized in that a second capacitor C 2 for removing a high-voltage DC component contained in a downstream signal and protecting the filter F is connected between the connection points of the choke coil L.
ＵＴ1、ＯＵＴ2を分配器ＤＴを介し二分配し、上記第２
出力端子ＯＵＴ2と分配器ＤＴ間の線路に不要周波数除
去フィルターＦを接続し、入力端子ＩＮと分配器ＤＴ間
の線路に避雷器ＡとチョークコイルＬを並列して接続し
て成る通信用保安器において、上記フィルターＦと出力
端子ＯＵＴ2間の線路に上り信号に含まれる高圧直流成
分を除去し上記フィルターＦを保護する第１コンデンサ
ーＣ1を接続すると共に、上記分配器ＤＴとフィルター
Ｆ間の線路に下り信号に含まれる高圧直流成分を除去し
上記フィルターＦを保護する第２コンデンサーＣ2を接
続したことを特徴とする通信用保安器。2. The first and second output terminals O with respect to the input terminal IN.
UT 1 and OUT 2 are divided into two through a distributor DT, and the second
A communication protector in which an unnecessary frequency elimination filter F is connected to the line between the output terminal OUT 2 and the distributor DT, and a lightning arrester A and a choke coil L are connected in parallel to the line between the input terminal IN and the distributor DT. At the line between the filter F and the output terminal OUT 2, a first capacitor C 1 for protecting the filter F by removing the high voltage DC component contained in the upstream signal is connected, and the line between the distributor DT and the filter F is connected. A communication protector characterized in that a second capacitor C 2 for removing a high-voltage DC component contained in a downstream signal and protecting the filter F is connected to the line.
いて上記第１、第２出力端子ＯＵＴ1、ＯＵＴ2の両分配
線路を短絡し、両分配線路を通過する信号のバランスを
補正する抵抗Ｒを接続したことを特徴とする請求項１又
は２記載の通信用保安器。3. A resistor R for short-circuiting both distribution lines of the first and second output terminals OUT 1 and OUT 2 between the distributor DT and the filter F to correct the balance of signals passing through both distribution lines. 3. The communication protector according to claim 1 or 2, further comprising:
ＵＴ1、ＯＵＴ2を分配器ＤＴを介し二分配し、上記入力
端子ＩＮと分配器ＤＴ間の線路に不要周波数除去フィル
ターＦを接続し、上記入力端子ＩＮとフィルターＦ間の
線路に避雷器ＡとチョークコイルＬを並列して接続して
成る通信用保安器において、上記分配器ＤＴと第１、第
２出力端子ＯＵＴ1、ＯＵＴ2間の線路に上り信号に含ま
れる高圧直流成分を除去し上記フィルターＦを保護する
第１コンデンサーＣ1を接続すると共に、上記入力端子
ＩＮとフィルターＦ間の線路の避雷器Ａとチョークコイ
ルＬの接続点間に下り信号に含まれる高圧直流成分を除
去し上記フィルターＦを保護する第２コンデンサーＣ2
を接続したことを特徴とする通信用保安器。4. The first and second output terminals O with respect to the input terminal IN.
UT 1 and OUT 2 are divided into two via a distributor DT, an unnecessary frequency elimination filter F is connected to the line between the input terminal IN and the distributor DT, and a lightning arrester A is connected to the line between the input terminal IN and the filter F. In a communication protector formed by connecting choke coils L in parallel, a high voltage DC component contained in an upstream signal is removed from a line between the distributor DT and the first and second output terminals OUT 1 and OUT 2. The first capacitor C 1 for protecting the filter F is connected, and the high voltage DC component contained in the down signal is removed between the connection point between the lightning arrester A and the choke coil L on the line between the input terminal IN and the filter F to remove the high voltage DC component. Second capacitor C 2 to protect F
A communication protector characterized by being connected to.
において上記第１、第２出力端子ＯＵＴ1、ＯＵＴ2の両
分配線路を短絡し、両分配線路を通過する信号のバラン
スを補正する抵抗Ｒを接続したことを特徴とする請求項
４記載の通信用保安器。5. The balance between signals passing through both distribution lines is corrected by short-circuiting both distribution lines of the first and second output terminals OUT 1 and OUT 2 between the distributor DT and the first capacitor C 1. The communication protector according to claim 4, wherein a resistor R is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992051060U JPH0727803Y2 (en) | 1992-06-26 | 1992-06-26 | Communication protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992051060U JPH0727803Y2 (en) | 1992-06-26 | 1992-06-26 | Communication protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH065342U true JPH065342U (en) | 1994-01-21 |
| JPH0727803Y2 JPH0727803Y2 (en) | 1995-06-21 |
Family
ID=12876262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992051060U Expired - Lifetime JPH0727803Y2 (en) | 1992-06-26 | 1992-06-26 | Communication protector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0727803Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5020808U (en) * | 1973-06-22 | 1975-03-10 | ||
| JPH07308021A (en) * | 1994-05-10 | 1995-11-21 | Meguro Denki Seizo Kk | Protector for catv subscriber |
| JPH099240A (en) * | 1995-06-21 | 1997-01-10 | Meguro Denki Seizo Kk | Protector for branching type communication |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH042171U (en) * | 1990-04-17 | 1992-01-09 |
-
1992
- 1992-06-26 JP JP1992051060U patent/JPH0727803Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH042171U (en) * | 1990-04-17 | 1992-01-09 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5020808U (en) * | 1973-06-22 | 1975-03-10 | ||
| JPH07308021A (en) * | 1994-05-10 | 1995-11-21 | Meguro Denki Seizo Kk | Protector for catv subscriber |
| JPH099240A (en) * | 1995-06-21 | 1997-01-10 | Meguro Denki Seizo Kk | Protector for branching type communication |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0727803Y2 (en) | 1995-06-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |