JPS5647129A - Alternating-current two-wire photoelectric switch - Google Patents
Alternating-current two-wire photoelectric switchInfo
- Publication number
- JPS5647129A JPS5647129A JP12435479A JP12435479A JPS5647129A JP S5647129 A JPS5647129 A JP S5647129A JP 12435479 A JP12435479 A JP 12435479A JP 12435479 A JP12435479 A JP 12435479A JP S5647129 A JPS5647129 A JP S5647129A
- Authority
- JP
- Japan
- Prior art keywords
- scr2
- scr1
- current
- waveform
- anode
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/72—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region
- H03K17/725—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region for ac voltages or currents
Landscapes
- Electronic Switches (AREA)
Abstract
PURPOSE:To make it stable and secure to turn on-off large current by supplying a photodetecting circuit with stable DC electric power. CONSTITUTION:Pulse-modulated light is inputted to photodetection part 1 to control transistor TR. Load-switching SCR3 is connected in parallel to bridge type full- wave rectifying circuit 2 to apply and add the plus waveform of pulsating current after full-wave rectification. Constant voltage SCR2 is also applied with the plus waveform of pulsating current and, as the waveform rises, conducts to charge capacitor C1. To control SCR1, voltage detecting Zener diode ZD1 is connected. Through capacitor C3 connected between SCR1 and SCR2, charging current flows when the anode of SCR1 is held at a potential of 0, and it functions to hold the anode of SCR2 at a potential of 0.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12435479A JPS5647129A (en) | 1979-09-27 | 1979-09-27 | Alternating-current two-wire photoelectric switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12435479A JPS5647129A (en) | 1979-09-27 | 1979-09-27 | Alternating-current two-wire photoelectric switch |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5647129A true JPS5647129A (en) | 1981-04-28 |
Family
ID=14883304
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12435479A Pending JPS5647129A (en) | 1979-09-27 | 1979-09-27 | Alternating-current two-wire photoelectric switch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5647129A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0101543A2 (en) * | 1982-08-19 | 1984-02-29 | Erwin Sick GmbH Optik-Elektronik | Switching light barrier |
US5025134A (en) * | 1988-05-24 | 1991-06-18 | David Bensoussan | Means for refreshing a triac control circuit power supply |
FR2882617A1 (en) * | 2005-02-28 | 2006-09-01 | Jacques Auguste Henri Brodier | Audio signal mixing, modulating and distributing table for e.g. recording studio, has unit assigning initial values to signal modulated by modules that configure circuit to allow modulating signal to adjust variable of sensor illumination |
-
1979
- 1979-09-27 JP JP12435479A patent/JPS5647129A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0101543A2 (en) * | 1982-08-19 | 1984-02-29 | Erwin Sick GmbH Optik-Elektronik | Switching light barrier |
DE3230903A1 (en) * | 1982-08-19 | 1984-03-01 | Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch | SWITCHING LIGHT BARRIER |
EP0101543B1 (en) * | 1982-08-19 | 1987-11-04 | Erwin Sick GmbH Optik-Elektronik | Switching light barrier |
US5025134A (en) * | 1988-05-24 | 1991-06-18 | David Bensoussan | Means for refreshing a triac control circuit power supply |
FR2882617A1 (en) * | 2005-02-28 | 2006-09-01 | Jacques Auguste Henri Brodier | Audio signal mixing, modulating and distributing table for e.g. recording studio, has unit assigning initial values to signal modulated by modules that configure circuit to allow modulating signal to adjust variable of sensor illumination |
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