JPH03122502U - - Google Patents
Info
- Publication number
- JPH03122502U JPH03122502U JP3030890U JP3030890U JPH03122502U JP H03122502 U JPH03122502 U JP H03122502U JP 3030890 U JP3030890 U JP 3030890U JP 3030890 U JP3030890 U JP 3030890U JP H03122502 U JPH03122502 U JP H03122502U
- Authority
- JP
- Japan
- Prior art keywords
- coefficient thermistor
- positive
- communication line
- temperature coefficient
- line protection
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Thermistors And Varistors (AREA)
Description
第１図ないし第３図は本考案に係る通信回線保
護用正特性サーミスタの第１実施例を示すもので
、第１図は正面図、第２図は第１図Ｘ−Ｘ′の垂
直断面図、第３図はこの正特性サーミスタが組み
込まれた保護回路図である。第４図及び第５図は
本考案に係る通信回線保護用正特性サーミスタの
第２実施例を示すもので、第４図は正面図、第５
図は第４図のＹ−Ｙ′の垂直断面図である。第６
図及び第７図は本考案に係る通信回線保護用正特
性サーミスタの第３実施例を示すもので、第６図
は平面図、第７図は第６図のＺ−Ｚ′の垂直断面
図である。第８図は本考案に係る通信回線保護用
正特性サーミスタのアレイタイプの一実施例を示
す平面図である。第９図は従来の通信回線保護用
正特性サーミスタが組み込まれた保護回路図を示
す。
１…熱伝導性の良好な絶縁板、６，７…正特性
サーミスタ素子、２１，３１，４０…熱伝導性の
良好な絶縁板、ｒ１，ｒ２…抵抗体。
Figures 1 to 3 show a first embodiment of the positive temperature coefficient thermistor for communication line protection according to the present invention, where Figure 1 is a front view and Figure 2 is a vertical cross section taken along line XX' in Figure 1. 3 are diagrams of a protection circuit incorporating this positive temperature coefficient thermistor. 4 and 5 show a second embodiment of the positive temperature coefficient thermistor for communication line protection according to the present invention; FIG. 4 is a front view, and FIG.
The figure is a vertical sectional view taken along line YY' in FIG. 4. 6th
7 and 7 show a third embodiment of the positive temperature coefficient thermistor for communication line protection according to the present invention, FIG. 6 is a plan view, and FIG. 7 is a vertical sectional view taken along line Z-Z' in FIG. 6. It is. FIG. 8 is a plan view showing an embodiment of the array type positive temperature coefficient thermistor for communication line protection according to the present invention. FIG. 9 shows a protection circuit diagram incorporating a conventional communication line protection positive temperature coefficient thermistor. 1... Insulating plate with good thermal conductivity, 6, 7... Positive temperature coefficient thermistor element, 21, 31, 40... Insulating plate with good thermal conductivity, r1, r2... Resistor.
Claims (1)
具備した通信回線保護用正特性サーミスタにおい
て、 少なくとも二つ以上の正特性サーミスタ素子と
、該正特性サーミスタ素子毎に接続した抵抗体と
を、熱伝導性の良好な絶縁板の表面に設け、前記
各正特性サーミスタ素子と抵抗体との合成抵抗値
が略等しくなるようにしたことを特徴とする通信
回線保護用正特性サーミスタ。[Claims for Utility Model Registration] In a positive temperature coefficient thermistor for communication line protection, which has one pair of input and output electrodes for each positive coefficient thermistor element, at least two or more positive coefficient thermistor elements, and for each positive coefficient thermistor element, A communication line protection device characterized in that the connected resistor is provided on the surface of an insulating plate having good thermal conductivity, so that the combined resistance value of each of the positive temperature coefficient thermistor elements and the resistor is approximately equal. Positive characteristic thermistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990030308U JP2508671Y2 (en) | 1990-03-24 | 1990-03-24 | Positive characteristic thermistor for communication line protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990030308U JP2508671Y2 (en) | 1990-03-24 | 1990-03-24 | Positive characteristic thermistor for communication line protection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03122502U true JPH03122502U (en) | 1991-12-13 |
| JP2508671Y2 JP2508671Y2 (en) | 1996-08-28 |
Family
ID=31533031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990030308U Expired - Lifetime JP2508671Y2 (en) | 1990-03-24 | 1990-03-24 | Positive characteristic thermistor for communication line protection |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2508671Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1145802A (en) * | 1997-06-30 | 1999-02-16 | Murata Mfg Co Ltd | Communication circuit protecting resistor and communication circuit protector |
| JP2020521334A (en) * | 2017-05-24 | 2020-07-16 | ティーディーケイ・エレクトロニクス・アクチェンゲゼルシャフトＴｄｋ Ｅｌｅｃｔｒｏｎｉｃｓ Ａｇ | Electrical components with fail-safe element |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58193601U (en) * | 1982-06-17 | 1983-12-23 | 松下電器産業株式会社 | thermistor |
| JPH01101128U (en) * | 1987-12-22 | 1989-07-07 |
-
1990
- 1990-03-24 JP JP1990030308U patent/JP2508671Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58193601U (en) * | 1982-06-17 | 1983-12-23 | 松下電器産業株式会社 | thermistor |
| JPH01101128U (en) * | 1987-12-22 | 1989-07-07 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1145802A (en) * | 1997-06-30 | 1999-02-16 | Murata Mfg Co Ltd | Communication circuit protecting resistor and communication circuit protector |
| JP2020521334A (en) * | 2017-05-24 | 2020-07-16 | ティーディーケイ・エレクトロニクス・アクチェンゲゼルシャフトＴｄｋ Ｅｌｅｃｔｒｏｎｉｃｓ Ａｇ | Electrical components with fail-safe element |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2508671Y2 (en) | 1996-08-28 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |