JPS6152431U - - Google Patents
Info
- Publication number
- JPS6152431U JPS6152431U JP13756784U JP13756784U JPS6152431U JP S6152431 U JPS6152431 U JP S6152431U JP 13756784 U JP13756784 U JP 13756784U JP 13756784 U JP13756784 U JP 13756784U JP S6152431 U JPS6152431 U JP S6152431U
- Authority
- JP
- Japan
- Prior art keywords
- coil
- thermistor
- switch means
- current
- protection circuit
- 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.)
- Pending
Links
- 230000002159 abnormal effect Effects 0.000 claims 1
- 230000020169 heat generation Effects 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
Landscapes
- Protection Of Static Devices (AREA)
Description
第１図はこの考案の一実施例を示す回路構成図
、第２図はサーミスタの温度１抵抗値の特性図で
ある。
１，３……サーミスタ、２……コイル、４……
コンデンサ、５……バリスタ、６……整流回路、
７……フオトカプラ。
FIG. 1 is a circuit configuration diagram showing an embodiment of this invention, and FIG. 2 is a temperature-dependent resistance characteristic diagram of the thermistor. 1, 3...Thermistor, 2...Coil, 4...
Capacitor, 5... Varistor, 6... Rectifier circuit,
7... Photocoupler.
Claims (1)
の温度変化により抵抗を変える正温度係数のサー
ミスタと、このサーミスタを介して前記コイルに
交流電流を供給する交流電源と、前記サーミスタ
とコイル間の電流の一部を整流する整流回路と、
この整流回路からの電流によりスイツチするスイ
ツチ手段を備え、 前記スイツチ手段の出力を監視することにより
前記コイルの発熱異常状態を検知することを特徴
とするコイル保護回路。 (2) 前記スイツチ手段はフオトカプラであるこ
とを特徴とする実用新案登録請求の範囲第(1)項
記載のコイル保護回路。[Claims for Utility Model Registration] (1) A coil, a thermistor with a positive temperature coefficient that is connected to the coil and whose resistance changes according to temperature changes in the coil, and an AC power source that supplies alternating current to the coil via the thermistor. and a rectifier circuit that rectifies a part of the current between the thermistor and the coil.
A coil protection circuit comprising a switch means for switching based on a current from the rectifier circuit, and detecting an abnormal heat generation state of the coil by monitoring an output of the switch means. (2) The coil protection circuit according to claim 1, wherein the switch means is a photocoupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13756784U JPS6152431U (en) | 1984-09-11 | 1984-09-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13756784U JPS6152431U (en) | 1984-09-11 | 1984-09-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6152431U true JPS6152431U (en) | 1986-04-09 |
Family
ID=30695979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13756784U Pending JPS6152431U (en) | 1984-09-11 | 1984-09-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6152431U (en) |
-
1984
- 1984-09-11 JP JP13756784U patent/JPS6152431U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6152431U (en) | ||
| JPS6188387U (en) | ||
| JPS5838410Y2 (en) | Power supply overheat protection device | |
| JPS61199678U (en) | ||
| JPH0316783U (en) | ||
| JPS6025016U (en) | temperature control device | |
| JPH0260443U (en) | ||
| JPH0316784U (en) | ||
| JPH0428792U (en) | ||
| JPH0176614U (en) | ||
| JPH0448785U (en) | ||
| JPS6248638U (en) | ||
| JPH0410586U (en) | ||
| JPS62112284U (en) | ||
| JPS6418883U (en) | ||
| JPS62169587U (en) | ||
| JPS61195723U (en) | ||
| JPS62127183U (en) | ||
| JPS6333332U (en) | ||
| JPS6337128U (en) | ||
| JPS6421585U (en) | ||
| JPS6160310U (en) | ||
| JPS58690U (en) | Single-phase induction motor starting circuit | |
| JPS5944194U (en) | motor starting device | |
| JPS63172235U (en) |