JPH0459637U - - Google Patents
Info
- Publication number
- JPH0459637U JPH0459637U JP10266790U JP10266790U JPH0459637U JP H0459637 U JPH0459637 U JP H0459637U JP 10266790 U JP10266790 U JP 10266790U JP 10266790 U JP10266790 U JP 10266790U JP H0459637 U JPH0459637 U JP H0459637U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- stable operation
- detection circuit
- contact 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
- 238000001514 detection method Methods 0.000 claims description 13
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Electronic Switches (AREA)
Description
第１図および第２図はそれぞれ本考案による２
線式無接点スイツチの異なる実施例を示す結線図
、第３図は従来の２線式無接点スイツチの一例を
示す結線図である。
１……電源、２……負荷、３，４……端子、１
４……検出回路、１５……安定動作レベル検出回
路、２１，２４……発光ダイオード、２５……Ａ
ＮＤゲート（通電禁止回路）、２６……通電禁止
回路。
Figures 1 and 2 are two figures according to the present invention, respectively.
A wiring diagram showing different embodiments of a wire-type non-contact switch. FIG. 3 is a wiring diagram showing an example of a conventional two-wire type non-contact switch. 1...Power supply, 2...Load, 3, 4...Terminal, 1
4...Detection circuit, 15...Stable operation level detection circuit, 21, 24...Light emitting diode, 25...A
ND gate (current prohibition circuit), 26... energization prohibition circuit.
Claims (1)
、入力が所定のレベルに達したことを検出する検
出回路と、この検出回路と検出レベルが異なりよ
り安定した検出レベルを有する安定動作レベル検
出回路と、前記検出回路の出力により駆動される
動作表示灯と、前記安定動作レベル検出回路の出
力により駆動される安定動作表示灯と、前記２端
子間に接続され前記検出回路の出力により前記２
端子間に電流を流すスイツチング回路と、内部回
路に所定電圧を給電する定電圧回路と、前記検出
回路の出力を動作決定スイツチのオン、オフ条件
に応じてスイツチング回路に伝達する排他的論理
和回路とを備えた２線式無接点スイツチにおいて
、前記スイツチング回路がオフしているとき安定
動作表示灯への通電を禁止する通電禁止回路を設
けたことを特徴とする２線式無接点スイツチ。 ２ 請求項１記載の２線式無接点スイツチにおい
て、通電禁止回路は安定動作レベル検出回路の出
力と排他的論理和回路の出力との論理積により安
定動作表示灯に通電するＡＮＤゲートであること
を特徴とする２線式無接点スイツチ。 ３ 請求項１記載の２線式無接点スイツチにおい
て、通電禁止回路は動作決定スイツチの出力を反
転するインバータと、このインバータの出力と安
定動作レベル検出回路の出力との論理積により安
定動作表示灯に通電するＡＮＤゲートからなるこ
とを特徴とする２線式無接点スイツチ。[Claims for Utility Model Registration] 1. Two terminals to which a series circuit of a power supply and a load are connected, a detection circuit that detects when the input reaches a predetermined level, and a detection circuit that has a different detection level and a more stable one. a stable operation level detection circuit having a detection level; an operation indicator lamp driven by the output of the detection circuit; a stable operation indicator lamp driven by the output of the stable operation level detection circuit; and a stable operation indicator lamp connected between the two terminals. The output of the detection circuit causes the second
A switching circuit that flows current between terminals, a constant voltage circuit that supplies a predetermined voltage to the internal circuit, and an exclusive OR circuit that transmits the output of the detection circuit to the switching circuit depending on the on/off condition of the operation determining switch. A two-wire non-contact switch comprising: a two-wire non-contact switch comprising: a energization prohibition circuit that prohibits energization to a stable operation indicator lamp when the switching circuit is off; 2. In the two-wire non-contact switch according to claim 1, the energization prohibition circuit is an AND gate that energizes the stable operation indicator lamp by ANDing the output of the stable operation level detection circuit and the output of the exclusive OR circuit. A 2-wire non-contact switch featuring: 3. In the two-wire non-contact switch according to claim 1, the energization prohibition circuit includes an inverter that inverts the output of the operation determining switch, and a stable operation indicator light based on the AND of the output of this inverter and the output of the stable operation level detection circuit. A two-wire non-contact switch characterized by consisting of an AND gate that energizes the switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10266790U JPH0459637U (en) | 1990-09-28 | 1990-09-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10266790U JPH0459637U (en) | 1990-09-28 | 1990-09-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0459637U true JPH0459637U (en) | 1992-05-21 |
Family
ID=31847107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10266790U Pending JPH0459637U (en) | 1990-09-28 | 1990-09-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0459637U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05335922A (en) * | 1992-05-28 | 1993-12-17 | Sanyo Electric Co Ltd | Photodetector |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5784534A (en) * | 1980-11-17 | 1982-05-26 | Omron Tateisi Electronics Co | 2-wired proximity switch with operation indicating function |
| JPH02305213A (en) * | 1989-05-19 | 1990-12-18 | Sunx Ltd | Two-wire type sensor |
-
1990
- 1990-09-28 JP JP10266790U patent/JPH0459637U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5784534A (en) * | 1980-11-17 | 1982-05-26 | Omron Tateisi Electronics Co | 2-wired proximity switch with operation indicating function |
| JPH02305213A (en) * | 1989-05-19 | 1990-12-18 | Sunx Ltd | Two-wire type sensor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05335922A (en) * | 1992-05-28 | 1993-12-17 | Sanyo Electric Co Ltd | Photodetector |
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