JPS5834442U - DC two-wire non-contact switch - Google Patents
DC two-wire non-contact switchInfo
- Publication number
- JPS5834442U JPS5834442U JP12851881U JP12851881U JPS5834442U JP S5834442 U JPS5834442 U JP S5834442U JP 12851881 U JP12851881 U JP 12851881U JP 12851881 U JP12851881 U JP 12851881U JP S5834442 U JPS5834442 U JP S5834442U
- Authority
- JP
- Japan
- Prior art keywords
- schmitt trigger
- output
- contact switch
- trigger circuit
- circuit section
- 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
Landscapes
- Electronic Switches (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の直流二線式近接スイッチの一例を示す回
路図、第２図ａ、 ｃはこの近接スイッチの動作を示
す波形図、第２図す、 ｄはその動作状態図、第３図
はＦＥＴ１５、第４図はツェナーダイオードＺＤ２の動
作特性図、第５図は本考案による直流二線式近接スイッ
チの一実施例を示す波形図、第６図ａ、 ｃはこの近
接スイッチの動作を示す波形図、第６図す、 ｄはそ
の動作状態図を示す。
１・・・直流電源、２・・・負荷、３，４・・・端子、
５・・・発振回路、６・・・検波回路、７．２１・・・
シュミットトリガ回路、８． ９． １１． １２・・
・トランジスタ、１０・・・出力回路部、１６・・・定
電流回路、１８・・・定電圧回路、Ｒ２２，Ｒ２３，Ｒ
２４，Ｒ２５・・・抵抗、ＺＤＩ、 Ｚｎ２． Ｚｎ２
・・・ツェナーダイオード。
５ ６ ７
／ ／／
［［−服−Ｃ）”：−−−−−−−ｊFig. 1 is a circuit diagram showing an example of a conventional DC two-wire proximity switch, Fig. 2 a and c are waveform diagrams showing the operation of this proximity switch, Fig. 2 and d are its operating state diagram, and Fig. 3 The figure shows the operating characteristics of the FET15, FIG. 4 shows the operating characteristics of the Zener diode ZD2, FIG. 5 shows the waveforms of an embodiment of the DC two-wire proximity switch according to the present invention, and FIGS. 6a and c show the operation of this proximity switch. Figure 6 is a waveform diagram showing the operation state diagram. 1... DC power supply, 2... Load, 3, 4... Terminal,
5... Oscillator circuit, 6... Detection circuit, 7.21...
Schmitt trigger circuit, 8. 9. 11. 12...
・Transistor, 10... Output circuit section, 16... Constant current circuit, 18... Constant voltage circuit, R22, R23, R
24, R25...Resistance, ZDI, Zn2. Zn2
...Zener diode. 5 6 7 / // [[-Clothing-C)”:-------j
Claims (2)
の端子と、センサ回路部と、前記センサ回路部の出力を
整形するシュミットトリガ回路と、前記シュミットトリ
ガ回路の出力に基づいて前記第一、第二の端子間を開閉
するスイッチング回路部と、を有し、前記第一、第二の
端子を通じて直流電源の電力を前記センサ回路、シュミ
ットトリガ回路及びスイッチング回路部に供給する直流
二線式無接点スイッチにおいて、前記シュミットトリガ
回路の出力段を構成する第一のトランジスタの負荷とし
て定電圧素子を接続し、この接続点と前記スイッチング
回路部を構成する第二のトランジスタのベースとを第一
の抵抗を介して接続したことを特徴とする直流二線式無
接点スイッチ。(1) First and second terminals to which a load and a DC power supply are connected in series, a sensor circuit section, a Schmitt trigger circuit that shapes the output of the sensor circuit section, and based on the output of the Schmitt trigger circuit. a switching circuit section that opens and closes between the first and second terminals, and supplies power from the DC power supply to the sensor circuit, the Schmitt trigger circuit, and the switching circuit section through the first and second terminals. In the DC two-wire non-contact switch, a constant voltage element is connected as a load of the first transistor that constitutes the output stage of the Schmitt trigger circuit, and this connection point and the base of the second transistor that constitutes the switching circuit section. A DC two-wire non-contact switch characterized in that the and are connected through a first resistor.
オフ動作時における定電圧素子の出力電圧が、そのオン
動作時における出力電圧より太き（なるように前記第一
の抵抗値及びシュミットトリガ回路のエミッタ抵抗値を
設定・したことを特徴とする実用新案登録請求の範囲第
１項記載の直流二線式無接点スイッチ。(2) The output voltage of the constant voltage element during the OFF operation of the output transistor of the Schmitt trigger circuit is larger than the output voltage during the ON operation (the first resistance value and the emitter resistance of the Schmitt trigger circuit A DC two-wire type non-contact switch according to claim 1 of the utility model registration claim, characterized in that a value is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12851881U JPS5834442U (en) | 1981-08-28 | 1981-08-28 | DC two-wire non-contact switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12851881U JPS5834442U (en) | 1981-08-28 | 1981-08-28 | DC two-wire non-contact switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5834442U true JPS5834442U (en) | 1983-03-05 |
Family
ID=29922215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12851881U Pending JPS5834442U (en) | 1981-08-28 | 1981-08-28 | DC two-wire non-contact switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5834442U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54503A (en) * | 1977-06-02 | 1979-01-05 | Mitsubishi Electric Corp | Telephon set with selection terminal |
-
1981
- 1981-08-28 JP JP12851881U patent/JPS5834442U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54503A (en) * | 1977-06-02 | 1979-01-05 | Mitsubishi Electric Corp | Telephon set with selection terminal |
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