JPH0446502U - - Google Patents
Info
- Publication number
- JPH0446502U JPH0446502U JP8774990U JP8774990U JPH0446502U JP H0446502 U JPH0446502 U JP H0446502U JP 8774990 U JP8774990 U JP 8774990U JP 8774990 U JP8774990 U JP 8774990U JP H0446502 U JPH0446502 U JP H0446502U
- Authority
- JP
- Japan
- Prior art keywords
- resistance value
- fixed resistor
- temperature coefficient
- positive temperature
- coefficient thermistor
- 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 4
- 239000000758 substrate Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Thermistors And Varistors (AREA)
Description
第１図ないし第３図は本考案に係る正特性サー
ミスタの第１実施例を示すもので第１図及び第２
図はそれぞれ正特性サーミスタの正面図及び背面
図、第３図はその等価電気回路図である。第４図
ないし第９図は本考案に係る正特性サーミスタの
第２実施例を示すもので、第４図、第５図及び第
６図はそれぞれ正特性サーミスタの正面図、右側
面及び背面図、第７図ａはヒユーズ機能部分の拡
大平面図、第７図ｂは第７図ａの−′の垂直
断面図、第８図ａは第７図ａ，ｂで示した機能部
分の変形例を示す拡大平面図、第８図ｂは第８図
ａの−′の垂直断面図、第９図は正特性サー
ミスタの等価電気回路図である。第１０図ないし
第１２図は本考案に係る正特性サーミスタの第３
実施例を示すもので、第１０図及び第１１図はそ
れぞれ正特性サーミスタの正面図及び背面図、第
１２図はその等価電気回路図である。第１３図は
電話局交換機の電話回路図である。
１……基板、８……固定抵抗体、１０……正特
性サーミスタ素子、２１……基板、２２……正特
性サーミスタ素子、３２，３３，３４……固定抵
抗体、４１……基板、４８ａ，４８ｂ……固定抵
抗体、５０ａ，５０ｂ……正特性サーミスタ素子
。
1 to 3 show a first embodiment of a positive temperature coefficient thermistor according to the present invention.
The figures are a front view and a rear view of a positive temperature coefficient thermistor, respectively, and FIG. 3 is an equivalent electric circuit diagram thereof. 4 to 9 show a second embodiment of the PTC thermistor according to the present invention, and FIGS. 4, 5, and 6 are front, right, and rear views of the PTC thermistor, respectively. , FIG. 7a is an enlarged plan view of the fuse function part, FIG. 7b is a vertical sectional view taken along the line -' of FIG. 7a, and FIG. 8a is a modification of the functional part shown in FIGS. 7a and b. FIG. 8b is a vertical sectional view taken along line -' in FIG. 8a, and FIG. 9 is an equivalent electric circuit diagram of the positive temperature coefficient thermistor. Figures 10 to 12 show the third example of the positive temperature coefficient thermistor according to the present invention.
10 and 11 are front and rear views of a positive temperature coefficient thermistor, respectively, and FIG. 12 is an equivalent electric circuit diagram thereof. FIG. 13 is a telephone circuit diagram of the central office exchange. DESCRIPTION OF SYMBOLS 1...Substrate, 8...Fixed resistor, 10...Positive temperature coefficient thermistor element, 21...Substrate, 22...Positive temperature coefficient thermistor element, 32, 33, 34...Fixed resistor, 41...Substrate, 48a , 48b...fixed resistor, 50a, 50b...positive temperature coefficient thermistor element.
Claims (1)
抵抗値の比が１：５以上であり、かつ、素子と固
定抵抗体との合成抵抗値が５０Ω以上５００Ω以
下であることを特徴とする正特性サーミスタ。 A positive characteristic thermistor characterized in that the ratio of the resistance value of the positive characteristic thermistor element to the resistance value of the fixed resistor is 1:5 or more, and the combined resistance value of the element and the fixed resistor is 50Ω or more and 500Ω or less thermistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990087749U JP2520561Y2 (en) | 1990-08-21 | 1990-08-21 | Positive characteristic thermistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990087749U JP2520561Y2 (en) | 1990-08-21 | 1990-08-21 | Positive characteristic thermistor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0446502U true JPH0446502U (en) | 1992-04-21 |
| JP2520561Y2 JP2520561Y2 (en) | 1996-12-18 |
Family
ID=31820388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990087749U Expired - Lifetime JP2520561Y2 (en) | 1990-08-21 | 1990-08-21 | Positive characteristic thermistor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2520561Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2015046258A1 (en) * | 2013-09-25 | 2017-03-09 | Ｌｉｔｔｅｌｆｕｓｅジャパン合同会社 | Protective device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6371504U (en) * | 1986-10-29 | 1988-05-13 |
-
1990
- 1990-08-21 JP JP1990087749U patent/JP2520561Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6371504U (en) * | 1986-10-29 | 1988-05-13 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2015046258A1 (en) * | 2013-09-25 | 2017-03-09 | Ｌｉｔｔｅｌｆｕｓｅジャパン合同会社 | Protective device |
| US10396543B2 (en) | 2013-09-25 | 2019-08-27 | Littelfuse Japan G.K. | Protection device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2520561Y2 (en) | 1996-12-18 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |