JPS5461417A - Input circuit - Google Patents
Input circuitInfo
- Publication number
- JPS5461417A JPS5461417A JP12795377A JP12795377A JPS5461417A JP S5461417 A JPS5461417 A JP S5461417A JP 12795377 A JP12795377 A JP 12795377A JP 12795377 A JP12795377 A JP 12795377A JP S5461417 A JPS5461417 A JP S5461417A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- input
- current
- inputted
- reliability
- 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 assure the reliability of overal system, by increasing the fidelity and the reliability of the display section monitoring the input condition of the input circuit and reducing the failure due to the monitor display.
CONSTITUTION: When a signal of high level is inputted between the input terminal INx and the common terminal COM, the signal current is rectified with the full wave rectifying circuit via the current limit resistor R1, the rectified current is flown through the branching resistor R2 and the light emitting diode Ld of the photo coupler Pc so that the photo transistor Pt bocemes conductive according to the input signal. At this time, the light emitting diode De of the rectifying circuit Rd preforms rectifying operation and is driven for illumination, illuminating the pilot lamp near the input terminal 1Nx to which the signal is inputted
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12795377A JPS5461417A (en) | 1977-10-25 | 1977-10-25 | Input circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12795377A JPS5461417A (en) | 1977-10-25 | 1977-10-25 | Input circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5461417A true JPS5461417A (en) | 1979-05-17 |
Family
ID=14972717
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12795377A Pending JPS5461417A (en) | 1977-10-25 | 1977-10-25 | Input circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5461417A (en) |
-
1977
- 1977-10-25 JP JP12795377A patent/JPS5461417A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5788318A (en) | Electronic meter for automobile | |
DK0678078T3 (en) | Circuit device for emitting optical signals | |
EP0308058A3 (en) | Power supply | |
JPS52102719A (en) | Indicator control circuit | |
JPS5461417A (en) | Input circuit | |
DK322685D0 (en) | CIRCUIT FOR MONITORING A TYRISTOR | |
JPS5546873A (en) | Light-triggered thyristor | |
JPS57198510A (en) | Display device for tape recorder | |
JPS6438766A (en) | Laser diode driving device | |
JPS57199931A (en) | Detecting apparatus of disconnected part for optical fiber | |
JPS5390801A (en) | Semiconductor laser switching system | |
JPS57105624A (en) | Safety device for combustion equipment | |
JPS57120465A (en) | Printer | |
JPS6446114A (en) | Power supply sequence circuit | |
JPS54134469A (en) | Measuring method and device for electric circuit | |
JPS57164766A (en) | Detector for disconnection of lamp | |
JPS5460530A (en) | Optical memory device | |
JPS57162880A (en) | Detecting system of deteriorated fluorescent lamp | |
JPS55160818A (en) | Method of indicating liquid level | |
JPS5789742A (en) | Confirmation device for film feeding state | |
JPS5624330A (en) | Display device of film feed rate of camera | |
JPS55154640A (en) | Terminal printer | |
JPS5536885A (en) | Dimmer type strobe device | |
JPS5443033A (en) | Paper detecting method | |
JPS6480934A (en) | Automatic controller for light quantity of television camera |