JPS62104167U - - Google Patents
Info
- Publication number
- JPS62104167U JPS62104167U JP19517585U JP19517585U JPS62104167U JP S62104167 U JPS62104167 U JP S62104167U JP 19517585 U JP19517585 U JP 19517585U JP 19517585 U JP19517585 U JP 19517585U JP S62104167 U JPS62104167 U JP S62104167U
- Authority
- JP
- Japan
- Prior art keywords
- excitation coil
- output voltage
- drive circuit
- circuit
- reed switch
- 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
- 230000005284 excitation Effects 0.000 claims description 11
- 235000014676 Phragmites communis Nutrition 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 1
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Description
第１図は本考案に係るリードスイツチの特性測
定回路図、第２図は本発明のリードスイツチの特
性測定用励磁コイルの断線検出回路図、第３図は
一般的なリードスイツチの構成図、第４図は従来
のリードスイツチの特性測定回路図である。
２０……入力端子、２１……Ｄ／Ａ変換回路、
２２……定電流回路、２３……特性測定用励磁コ
イル、２４……励磁コイルの断線検出回路、２５
……比較回路、２６……断線検出信号出力端子、
２７，２８……端子、２９……コンパレータ、３
０……電流出力型演算増幅器。
Fig. 1 is a characteristic measurement circuit diagram of a reed switch according to the present invention, Fig. 2 is a disconnection detection circuit diagram of an excitation coil for characteristic measurement of the reed switch of the present invention, and Fig. 3 is a configuration diagram of a general reed switch. FIG. 4 is a circuit diagram for measuring characteristics of a conventional reed switch. 20...Input terminal, 21...D/A conversion circuit,
22... constant current circuit, 23... excitation coil for characteristic measurement, 24... disconnection detection circuit for excitation coil, 25
... Comparison circuit, 26 ... Disconnection detection signal output terminal,
27, 28... terminal, 29... comparator, 3
0... Current output type operational amplifier.
Claims (1)
チの特性測定回路において、前記励磁コイルが正
常状態にある時の前記励磁コイルの駆動回路の出
力電圧より高く、かつ前記励磁コイルが断線状態
にある時の前記励磁コイルの駆動回路の出力電圧
より低電圧にスレシホールド電圧を設定した比較
回路を有する前記励磁コイルの断線検出手段を具
備するようにしたことを特徴とするリードスイツ
チの特性測定回路。 In a characteristic measuring circuit for a reed switch including an excitation coil for characteristic measurement, the output voltage of the excitation coil drive circuit is higher than the output voltage of the excitation coil drive circuit when the excitation coil is in a normal state, and the output voltage is higher than the output voltage of the excitation coil drive circuit when the excitation coil is in a disconnected state. 1. A characteristic measuring circuit for a reed switch, comprising: disconnection detection means for the excitation coil, which has a comparison circuit whose threshold voltage is set to a lower voltage than the output voltage of the excitation coil drive circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19517585U JPS62104167U (en) | 1985-12-20 | 1985-12-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19517585U JPS62104167U (en) | 1985-12-20 | 1985-12-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62104167U true JPS62104167U (en) | 1987-07-02 |
Family
ID=31152824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19517585U Pending JPS62104167U (en) | 1985-12-20 | 1985-12-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62104167U (en) |
-
1985
- 1985-12-20 JP JP19517585U patent/JPS62104167U/ja active Pending
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