JPS5461417A - Input circuit - Google Patents

Input circuit

Info

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
Application number
JP12795377A
Other languages
Japanese (ja)
Inventor
Minoru Oka
Hisao Toyama
Kazuo Mushishika
Takeo Otsu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP12795377A priority Critical patent/JPS5461417A/en
Publication of JPS5461417A publication Critical patent/JPS5461417A/en
Pending legal-status Critical Current

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
JP12795377A 1977-10-25 1977-10-25 Input circuit Pending JPS5461417A (en)

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)

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