JPS63159403U - - Google Patents

Info

Publication number
JPS63159403U
JPS63159403U JP1987051021U JP5102187U JPS63159403U JP S63159403 U JPS63159403 U JP S63159403U JP 1987051021 U JP1987051021 U JP 1987051021U JP 5102187 U JP5102187 U JP 5102187U JP S63159403 U JPS63159403 U JP S63159403U
Authority
JP
Japan
Prior art keywords
voltage
circuit
photocoupler
positive
negative
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
JP1987051021U
Other languages
English (en)
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 filed Critical
Priority to JP1987051021U priority Critical patent/JPS63159403U/ja
Priority to US07/178,218 priority patent/US4823021A/en
Priority to KR888804919U priority patent/KR910000671Y1/ko
Priority to AU14195/88A priority patent/AU584540B2/en
Publication of JPS63159403U publication Critical patent/JPS63159403U/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/30—Electric signal transmission systems in which transmission is by selection of one or more conductors or channels from a plurality of conductors or channels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • H01H9/167—Circuits for remote indication

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Programmable Controllers (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Electronic Switches (AREA)

Description

【図面の簡単な説明】
第１図は本考案によるデイジタル信号入力回路
の一実施例の構成図、第２図はそのタイミングチ
ヤート、第３図は従来のデイジタル信号入力回路
の構成図、第４図はそのタイミングチヤートであ
る。 １Ａ，１Ｂ……ダイオド、２……入力インピー
ダンス、３……ホトカプラ、５，６……ホトカプ
ラ、７……交流電源、８Ａ，８Ｂ……読み出し信
号（線）、９Ａ，９Ｂ……データバス、４１〜４
ｎ……入力回路、３１Ａ，３１Ｂ……ラツチパル
ス検出回路、３２Ａ，３２Ｂ……デイレー回路、
３４Ａ，３４Ｂ……データ保持回路、ＳＷ１Ａ〜
ＳＷｎＢ……スイツチ。

Claims (1)

    【実用新案登録請求の範囲】
  1. スイツチを介して入力される交流電圧の有無に
    よりスイツチの開閉状態を検出する回路において
    、前記交流電圧の正極性の電圧を得る第１のダイ
    オードと、前記交流電圧の負極性の電圧を得る第
    ２のダイオードと、前記正極性の電圧および負極
    性の電圧により励起されるフオトカプラーと、前
    記交流電圧の正極性の電圧および負極性の電圧に
    同期して一定の位相で立上るラツチパルスを出力
    するパルス検出回路と、前記ラツチパルスにより
    前記フオトカプラーの出力信号を読み込むデータ
    保持回路を設け、１ケのフオトカプラーで２入力
    点としたことを特徴とするデイジタル信号の入力
    回路。
JP1987051021U 1987-04-06 1987-04-06 Pending JPS63159403U (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP1987051021U JPS63159403U (ja) 1987-04-06 1987-04-06
US07/178,218 US4823021A (en) 1987-04-06 1988-04-06 Circuit for detecting on/off states of switches
KR888804919U KR910000671Y1 (en) 1987-04-06 1988-04-06 On/off detecting circuit of switch
AU14195/88A AU584540B2 (en) 1987-04-06 1988-04-06 Circuit for detecting on/off states of switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987051021U JPS63159403U (ja) 1987-04-06 1987-04-06

Publications (1)

Publication Number Publication Date
JPS63159403U true JPS63159403U (ja) 1988-10-19

Family

ID=12875141

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987051021U Pending JPS63159403U (ja) 1987-04-06 1987-04-06

Country Status (4)

Country Link
US (1) US4823021A (ja)
JP (1) JPS63159403U (ja)
KR (1) KR910000671Y1 (ja)
AU (1) AU584540B2 (ja)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0464060A4 (en) * 1989-03-21 1993-02-24 Peter Michael Stock Switch means incorporating slave relays
GB9112867D0 (en) * 1991-06-14 1991-07-31 Huntleigh Technology Plc Power fail detection circuit
US5642104A (en) * 1991-08-29 1997-06-24 The Genlyte Group Incorporated Audible alert for automatic shutoff circuit
US5194858A (en) * 1991-08-29 1993-03-16 The Genlyte Group Incorporated Lighting control system with set/reset ground remote
US7120788B2 (en) * 2002-06-20 2006-10-10 Intel Corporation Method and system for shutting down and restarting a computer system
US9329237B2 (en) * 2014-01-10 2016-05-03 Freescale Semiconductor, Inc. Switch detection device and method of use
US10502786B2 (en) * 2016-11-18 2019-12-10 GM Global Technology Operations LLC Vehicle including multiple analog switch monitoring system with simultaneous switch-state detection
CN110260499B (zh) * 2019-06-13 2020-12-25 珠海格力电器股份有限公司 一种交流信号采集装置、空调及其交流信号采集方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3693060A (en) * 1971-04-13 1972-09-19 Philips Corp Solid-state relay using light-emitting diodes
US4267406A (en) * 1979-08-27 1981-05-12 Perry James E Apparatus utilizing portions of a conventional telephone installation for selectively controlling electrically operated, temperature regulating equipment
DE3001940C2 (de) * 1980-01-21 1983-01-27 Siemens AG, 1000 Berlin und 8000 München Anordnung zur Ermittlung der Schaltstellung eines Schalters und zur Überwachung der zugehörigen Leitung auf Kurzschluß und Unterbrechung
US4384171A (en) * 1980-12-15 1983-05-17 Klee Maurice M Automatic telephone silencer
US4438527A (en) * 1982-04-02 1984-03-20 Hammond William P Signal responsive automatic control for audio equipment
DE3518300A1 (de) * 1985-05-22 1986-11-27 Horst E. 7240 Horb Dreier Schaltgeraet fuer rechnergesteuerte werkzeugmaschinen und messanordnung unter dessen verwendung
US4723269A (en) * 1985-12-23 1988-02-02 Compaq Telecommunications Corporation Method and apparatus for power-up of unattended computer
JPS62195803A (ja) * 1986-02-24 1987-08-28 東芝テック株式会社 照明器具の反射板
JPS62284477A (ja) * 1986-05-31 1987-12-10 Mitsubishi Electric Corp デイジタル入力回路
US4751401A (en) * 1987-03-23 1988-06-14 Core Industries Inc. Low voltage switch
US5233237A (en) * 1991-12-06 1993-08-03 National Semiconductor Corporation Bicmos output buffer noise reduction circuit

Also Published As

Publication number Publication date
AU584540B2 (en) 1989-05-25
KR910000671Y1 (en) 1991-02-08
AU1419588A (en) 1988-10-06
US4823021A (en) 1989-04-18

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