JPS59237U - proximity switch - Google Patents
proximity switchInfo
- Publication number
- JPS59237U JPS59237U JP9511282U JP9511282U JPS59237U JP S59237 U JPS59237 U JP S59237U JP 9511282 U JP9511282 U JP 9511282U JP 9511282 U JP9511282 U JP 9511282U JP S59237 U JPS59237 U JP S59237U
- Authority
- JP
- Japan
- Prior art keywords
- oscillation
- output
- circuit
- locking
- amplitude
- 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
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
- 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図は従来の近接スイッチの結線図、第２図は第１図
に示す近接スイッチの検出コイルと金属体と距離と発振
成長時間との関係を示す曲線図、第３図は本考案による
近接スイッチの結線図を示す。
１：トランジスタＬＣ発振回路、２：発振用トランジス
タ、１０：発振回路の出力抵抗、２１：弁別口 路、２
３：出力トランジスタ、３１：遅延回路、４１：トラン
ジスタ抵抗回路。Figure 1 is a wiring diagram of a conventional proximity switch, Figure 2 is a curve diagram showing the relationship between the detection coil, metal body, distance, and oscillation growth time of the proximity switch shown in Figure 1, and Figure 3 is a diagram according to the present invention. The wiring diagram of the proximity switch is shown. 1: Transistor LC oscillation circuit, 2: Oscillation transistor, 10: Oscillation circuit output resistance, 21: Discrimination port, 2
3: Output transistor, 31: Delay circuit, 41: Transistor resistance circuit.
Claims (1)
回路と、該発振回路の発振出力の振巾レベルに基づいて
被検出物体の接近の有無を判定す１ る判定
回路と、該判定回路の出力により制御される出力用スイ
ッチング回路と、該出力用スイッチング回路の導通を電
源投入後の所定期間だけロックするロック手段と、該ロ
ック手段のロック期間中に前記発振回路の増巾率を増加
させて発振出力の振巾を増加させる手段とを備えたこと
を特徴とする近接スイッチ。An oscillation circuit whose amplitude of oscillation output decreases as a detected object approaches, a determination circuit that determines whether or not a detected object is approaching based on the amplitude level of the oscillation output of the oscillation circuit, and the determination circuit. an output switching circuit controlled by the output of the output switching circuit; locking means for locking conduction of the output switching circuit for a predetermined period after power is turned on; and increasing the amplification rate of the oscillation circuit during the locking period of the locking means. and means for increasing the amplitude of the oscillation output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9511282U JPS59237U (en) | 1982-06-24 | 1982-06-24 | proximity switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9511282U JPS59237U (en) | 1982-06-24 | 1982-06-24 | proximity switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59237U true JPS59237U (en) | 1984-01-05 |
Family
ID=30227294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9511282U Pending JPS59237U (en) | 1982-06-24 | 1982-06-24 | proximity switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59237U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07164792A (en) * | 1993-11-29 | 1995-06-27 | Toyo Electric Mfg Co Ltd | Pen tip cleaning method for plotter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5217860B2 (en) * | 1974-12-03 | 1977-05-18 | ||
| JPS56104540A (en) * | 1980-01-25 | 1981-08-20 | Matsushita Electric Ind Co Ltd | Oscillation/wave detection device |
-
1982
- 1982-06-24 JP JP9511282U patent/JPS59237U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5217860B2 (en) * | 1974-12-03 | 1977-05-18 | ||
| JPS56104540A (en) * | 1980-01-25 | 1981-08-20 | Matsushita Electric Ind Co Ltd | Oscillation/wave detection device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07164792A (en) * | 1993-11-29 | 1995-06-27 | Toyo Electric Mfg Co Ltd | Pen tip cleaning method for plotter |
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