JPH01119223U - - Google Patents
Info
- Publication number
- JPH01119223U JPH01119223U JP1385988U JP1385988U JPH01119223U JP H01119223 U JPH01119223 U JP H01119223U JP 1385988 U JP1385988 U JP 1385988U JP 1385988 U JP1385988 U JP 1385988U JP H01119223 U JPH01119223 U JP H01119223U
- Authority
- JP
- Japan
- Prior art keywords
- amplification circuit
- oscillation amplification
- proximity switch
- photocoupler
- 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
- 230000010355 oscillation Effects 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Electronic Switches (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図は従来例を示す回路図である。
図中、２１……近接スイツチ、２２……発振増
幅回路、２３……コイル、２４……コンデンサ、
２５……ＬＣ回路、２６……トランジスタ、２７
……発光ダイオード、２８……抵抗、２９……フ
オトトランジスタ、３０……ホトカプラ、３１，
３４，３５……第１〜第３ケーブル、３２……ダ
イオード、３３……電源、３６……負荷、Ａ〜Ｅ
……端子。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a circuit diagram showing a conventional example. In the figure, 21... proximity switch, 22... oscillation amplifier circuit, 23... coil, 24... capacitor,
25...LC circuit, 26...transistor, 27
...Light emitting diode, 28...Resistor, 29...Phototransistor, 30...Photocoupler, 31,
34, 35...First to third cables, 32...Diode, 33...Power supply, 36...Load, A to E
...Terminal.
Claims (1)
ＬＣ回路と、前記発振増幅回路の出力により作動
するスイツチング素子と、を有する近接スイツチ
において、電源のケーブル間に接続した発光素子
と、外部端子間に接続した受光素子と、で構成し
たホトカプラを設けたことを特徴とする近接スイ
ツチ。 In a proximity switch including an oscillation amplification circuit, an LC circuit connected to the oscillation amplification circuit, and a switching element operated by the output of the oscillation amplification circuit, a light emitting element connected between a power supply cable and an external terminal A proximity switch characterized by having a photocoupler configured with a photodetector connected to a photocoupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1385988U JPH01119223U (en) | 1988-02-04 | 1988-02-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1385988U JPH01119223U (en) | 1988-02-04 | 1988-02-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01119223U true JPH01119223U (en) | 1989-08-11 |
Family
ID=31224535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1385988U Pending JPH01119223U (en) | 1988-02-04 | 1988-02-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01119223U (en) |
-
1988
- 1988-02-04 JP JP1385988U patent/JPH01119223U/ja active Pending