JPS6397927U - - Google Patents
Info
- Publication number
- JPS6397927U JPS6397927U JP19396686U JP19396686U JPS6397927U JP S6397927 U JPS6397927 U JP S6397927U JP 19396686 U JP19396686 U JP 19396686U JP 19396686 U JP19396686 U JP 19396686U JP S6397927 U JPS6397927 U JP S6397927U
- Authority
- JP
- Japan
- Prior art keywords
- switching element
- contact switch
- smoothing capacitor
- model registration
- utility
- 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 6
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000009499 grossing Methods 0.000 claims description 4
- 230000001934 delay Effects 0.000 claims 1
- 230000005669 field effect Effects 0.000 claims 1
- 239000004065 semiconductor Substances 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Electronic Switches (AREA)
Description
第１図はこの考案にかかる無接点スイツチの１
実施例の回路図、第２図は従来例の無接点スイツ
チの回路図である。
１……検出回路、９……定電圧開閉回路、１０
……定電流回路、１１……ＡＮＤ回路、１２……
比較器、１３……基準電圧、１４……ＭＯＳ・Ｆ
ＥＴ（スイツチング素子）、１５……遅延回路、
Ｃ１……平滑コンデンサ、Ｃ２……コンデンサ、
Ｒ４……抵抗（電流制限素子）、Ａ……接続点。
Figure 1 shows one of the non-contact switches according to this invention.
FIG. 2 is a circuit diagram of a conventional non-contact switch. 1...Detection circuit, 9...Constant voltage switching circuit, 10
... Constant current circuit, 11 ... AND circuit, 12 ...
Comparator, 13...Reference voltage, 14...MOS・F
ET (switching element), 15...delay circuit,
C 1 ... Smoothing capacitor, C 2 ... Capacitor,
R4 ...Resistance (current limiting element), A...Connection point.
Claims (1)
負荷の制御を行う定電圧開閉回路と、 検出対象物の近接あるいは離間に応じて検出信
号を出力する検出回路と、 電流の導通および遮断を行うスイツチング素子
と、 電源投入後の前記検出回路の動作開始時期およ
びこのスイツチング素子の導通開始時期を遅延さ
せる遅延回路と、 前記負荷の駆動時に前記検出回路に電圧を供給
する平滑コンデンサと、 前記スイツチング素子に並列に接続された電流
制限素子を有する無接点スイツチであつて、 前記電流制限素子と前記平滑コンデンサにより
定められるこの平滑コンデンサの充電時間が前記
スイツチング素子の電源投入後の導通開始時期に
至るまでの所要時間より十分に短いことを特徴と
する無接点スイツチ。 (2) スイツチング素子が、低抵抗と等価的なエ
ンハンスメント特性のＭＯＳ・ＦＥＴ（Ｍｅｔａ
ｌ Ｏｘｉ‐ｄｅ Ｓｅｍｉｃｏｎｄｕｃｔｏｒ
・Ｆｉｅｌｄ Ｅｆｆｅｃｔ Ｔｒａｎｓｉｓｔ
ｏｒ）である実用新案登録請求の範囲第１項記載
の無接点スイツチ。 (3) 無接点スイツチが、検出信号出力端に接続
される２本の信号出力線から内部駆動電源を得て
いる交流２線式無接点スイツチである実用新案登
録請求の範囲第１項または第２項記載の無接点ス
イツチ。[Claims for Utility Model Registration] (1) A constant voltage switching circuit that receives power supply and outputs a constant voltage and controls a load, and a detection circuit that outputs a detection signal depending on the proximity or separation of an object to be detected. , a switching element that conducts and interrupts current; a delay circuit that delays the start of operation of the detection circuit and the start of conduction of the switching element after power is turned on; and a delay circuit that supplies voltage to the detection circuit when driving the load. and a current limiting element connected in parallel to the switching element, wherein the charging time of the smoothing capacitor determined by the current limiting element and the smoothing capacitor is determined by the charging time of the smoothing capacitor when the switching element is powered on. A non-contact switch characterized by being sufficiently shorter than the time required to reach the later conduction start time. (2) The switching element is a MOS/FET (Meta) with enhancement characteristics equivalent to low resistance.
l Oxide Semiconductor
・Field Effect Transist
The contactless switch according to claim 1 of the utility model registration claim, which is or). (3) The scope of the utility model registration claim, paragraph 1 or 2, wherein the non-contact switch is an AC two-wire non-contact switch that obtains internal drive power from two signal output lines connected to the detection signal output terminal. Non-contact switch described in Section 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19396686U JPS6397927U (en) | 1986-12-17 | 1986-12-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19396686U JPS6397927U (en) | 1986-12-17 | 1986-12-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6397927U true JPS6397927U (en) | 1988-06-24 |
Family
ID=31150490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19396686U Pending JPS6397927U (en) | 1986-12-17 | 1986-12-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6397927U (en) |
-
1986
- 1986-12-17 JP JP19396686U patent/JPS6397927U/ja active Pending
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