JPS5535556A - Two-wire system alternating current switching contactless switch - Google Patents
Two-wire system alternating current switching contactless switchInfo
- Publication number
- JPS5535556A JPS5535556A JP10894678A JP10894678A JPS5535556A JP S5535556 A JPS5535556 A JP S5535556A JP 10894678 A JP10894678 A JP 10894678A JP 10894678 A JP10894678 A JP 10894678A JP S5535556 A JPS5535556 A JP S5535556A
- Authority
- JP
- Japan
- Prior art keywords
- scr
- voltage
- turned
- alternating current
- current
- 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
Abstract
PURPOSE: To reduce loss and a residual voltage by supplying power to a sensor circuit by a voltage generated at both ends of a constant-voltage element when two thyristors are turned on.
CONSTITUTION: When output transistor 301 of sensor circuit 3 is turned on to flow a current to the gate of SCR 411 through resistance 421 and this SCR 411 is turned on, a voltage of a full-wave-rectified waveform is applied to both ends of Zener diode 413. Then, when this voltage becomes larger than the Zener voltage, diode 413 is turned on to flow a current, and this current is flowed to the gate of SCR 412, and SCR 412 is turned on. The residual voltage at this time is only residual voltages in one SCR and full-wave rectifier circuit 401 because SCR 411 and SCR 412 are not connected is series. As a result, loss and the residual voltage can be reduced.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10894678A JPS5535556A (en) | 1978-09-05 | 1978-09-05 | Two-wire system alternating current switching contactless switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10894678A JPS5535556A (en) | 1978-09-05 | 1978-09-05 | Two-wire system alternating current switching contactless switch |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5535556A true JPS5535556A (en) | 1980-03-12 |
Family
ID=14497646
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10894678A Pending JPS5535556A (en) | 1978-09-05 | 1978-09-05 | Two-wire system alternating current switching contactless switch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5535556A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5976398A (en) * | 1982-10-22 | 1984-05-01 | 日本電信電話株式会社 | Tunnel drilling method and machine |
-
1978
- 1978-09-05 JP JP10894678A patent/JPS5535556A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5976398A (en) * | 1982-10-22 | 1984-05-01 | 日本電信電話株式会社 | Tunnel drilling method and machine |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS52114915A (en) | Dc-dc converter | |
KR910008905A (en) | Over Current Protection Device | |
JPS5535556A (en) | Two-wire system alternating current switching contactless switch | |
JPS5679315A (en) | Constant-voltage power unit | |
JPS5762630A (en) | Control circuit device | |
JPS54159653A (en) | Switching control circuit | |
JPS5513672A (en) | Switching power source circuit | |
JPS5743209A (en) | Regulated power supply | |
JPS5568733A (en) | Program timer with overcurrent control unit | |
JPS5799032A (en) | Alternating current two-wire type contactless switch | |
JPS5726176A (en) | Power source device for electric prevention for corrosion provided with switch controlling output current | |
JPS57132766A (en) | Dc power source circuit | |
JPS558249A (en) | Free wheeling circuit | |
JPS56159716A (en) | Direct-current electric power device | |
JPS54161850A (en) | Magnetic bubble device | |
JPS54105457A (en) | Alternating current switching contactless switch of two-wire system | |
JPS54105455A (en) | Alternating current switching contactless switch of two-wire system | |
FR2349990A1 (en) | Battery charging circuit with transformer connected to AC supply - has bridge rectifier constituted by diodes, with output passed through modulator to filter | |
JPS5773A (en) | Converter circuit in inverter | |
JPS56134832A (en) | Two-wire photoelectric switch for alternating current and direct current | |
JPS5556481A (en) | Power supply voltage switching circuit | |
JPS5317952A (en) | Power supply circuit | |
JPS53142618A (en) | Current-voltage converter | |
JPS5654184A (en) | Voltage conversion device | |
JPS5636227A (en) | Alternating current two-wire detection switch |