GB1358354A - Arrangement for the control and/or testing of apparatus - Google Patents

Arrangement for the control and/or testing of apparatus

Info

Publication number
GB1358354A
GB1358354A GB2531872A GB2531872A GB1358354A GB 1358354 A GB1358354 A GB 1358354A GB 2531872 A GB2531872 A GB 2531872A GB 2531872 A GB2531872 A GB 2531872A GB 1358354 A GB1358354 A GB 1358354A
Authority
GB
United Kingdom
Prior art keywords
fault
diodes
light
diode
resistance
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.)
Expired
Application number
GB2531872A
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.)
Vereinigte Flugtechnische Werke Fokker GmbH
Original Assignee
Vereinigte Flugtechnische Werke Fokker GmbH
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
Priority claimed from DE19712126905 external-priority patent/DE2126905C3/en
Application filed by Vereinigte Flugtechnische Werke Fokker GmbH filed Critical Vereinigte Flugtechnische Werke Fokker GmbH
Publication of GB1358354A publication Critical patent/GB1358354A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
    • G01R31/2806—Apparatus therefor, e.g. test stations, drivers, analysers, conveyors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/302—Contactless testing
    • G01R31/308—Contactless testing using non-ionising electromagnetic radiation, e.g. optical radiation
    • G01R31/309—Contactless testing using non-ionising electromagnetic radiation, e.g. optical radiation of printed or hybrid circuits or circuit substrates
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/10—Monitoring of the annunciator circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Computer Hardware Design (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Computer Security & Cryptography (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Fire Alarms (AREA)
  • Audible And Visible Signals (AREA)

Abstract

1358354 Automatic fault indication VEREINIGTE FLUGTECHNISCHE WERKEFOKKER GmbH 30 May 1972 [29 May 1971] 25318/72 Heading H2K [Also in Divisions F4 and H1] In fault-detecting equipment having pilot lamps which light up and/or flash when a fault occurs, each pilot lamp includes a light-emitting semi-conductor diode arranged behind a light diffusing screen. A switch 10 has a printedcircuit board 14 with three gallium arsenide diodes, a coloured filter 16 and a diffusing plate 17. Alternatively a single diode may be mounted on a printed circuit 141. A fault detecting circuit uses luminous constructions 23 which comprise three lightemitting diodes 15 forming a pilot lamp 20, a transistor 22 whose base is connected to a fixed potentiometer formed by Zener diode 26 and a resistance 27 and resistances 24, 25 which control the intensity of light from the diodes by coupled switches 75, 76. When a fault occurs, relay 28, preferably a reed switch, switches the diodes 15 on in pilot lamp 20 and the fault signal is also fed through resistance 60 and diode 61 to a switching stage 50 and a delay unit 40. After a delay, relay 35 is closed and the multivibrator 30 activated thus flashing the main warning lamp 21. The main warning lamp 21 does not flash if the fault lasts only a short time. When the signal of the main warning lamp 21 has been recognized it may be switched off by closing switch 70 or 71. This activates the thyristor 63 thus blocking the fault signal coming through resistance 60. (For Figures see next page.)
GB2531872A 1971-05-29 1972-05-30 Arrangement for the control and/or testing of apparatus Expired GB1358354A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712126905 DE2126905C3 (en) 1971-05-29 Arrangement for monitoring and / or testing devices

Publications (1)

Publication Number Publication Date
GB1358354A true GB1358354A (en) 1974-07-03

Family

ID=5809368

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2531872A Expired GB1358354A (en) 1971-05-29 1972-05-30 Arrangement for the control and/or testing of apparatus

Country Status (3)

Country Link
US (1) US3813664A (en)
FR (1) FR2139870B1 (en)
GB (1) GB1358354A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3925690A (en) * 1974-09-30 1975-12-09 Rockwell International Corp Direct drive circuit for light emitting diodes
US3964039A (en) * 1974-12-24 1976-06-15 Monsanto Company Luminescent solid state status indicators
US3969697A (en) * 1974-12-30 1976-07-13 Matsushita Electric Industrial Co., Ltd. Voltage drop warning apparatus with negative-resistance device
US4021795A (en) * 1975-08-04 1977-05-03 Hollingsworth Robert Q System for indicating depletion of sliver from a sliver can
US4342947A (en) * 1977-10-14 1982-08-03 Bloyd Jon A Light indicating system having light emitting diodes and power reduction circuit
US4211956A (en) * 1977-10-14 1980-07-08 Aero-Metric General, Inc. Light indicating system having light emitting diodes and power reduction circuit
US4242677A (en) * 1979-05-24 1980-12-30 Mettler Instrumente Ag Monitoring device and method for a multiplexed segmental display
US4301450A (en) * 1980-02-04 1981-11-17 Burroughs Corporation Error detection for multi-segmented indicia display
JPS58117462A (en) * 1981-12-29 1983-07-13 Takamatsu Electric Works Ltd Overcurrent detection circuit for overcurrent passage display unit
US4550287A (en) * 1983-08-11 1985-10-29 The Boeing Company Data bus test instrument having a tri-colored LED and indicating continuity, voltage and polarity
US4947161A (en) * 1986-11-17 1990-08-07 White Consolidated Industries, Inc. Light bar
US4866430A (en) * 1986-12-11 1989-09-12 Motorola, Inc. Low voltage LED driver circuit
US4987401A (en) * 1989-03-06 1991-01-22 Gray Iii William R Digital logic window panel
US5459478A (en) * 1993-12-27 1995-10-17 Illinois Tool Works, Inc. Aircraft cockpit switch circuitry
US6351211B1 (en) * 2000-01-25 2002-02-26 M&P Ventures, Inc. Brake warning method and system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2144138A (en) * 1936-04-08 1939-01-17 Standard Mfg Co Current controlling device
US2934752A (en) * 1956-10-22 1960-04-26 Radar Relay Inc Multiple warning system with single reset switch
US3228026A (en) * 1963-08-26 1966-01-04 Robert J Miller Multi-color signal light button for panel mounting
US3412392A (en) * 1965-04-07 1968-11-19 Gen Motors Corp Potential level indicating circuit
US3452347A (en) * 1966-11-03 1969-06-24 Eastman Kodak Co Luminous diode battery condition indicator for camera
US3492488A (en) * 1967-09-11 1970-01-27 Bell Telephone Labor Inc Photon coupling for a communication circuit
US3660674A (en) * 1970-06-22 1972-05-02 Meridian Industries Inc Transistor flasher with preheat circuit for lamp load

Also Published As

Publication number Publication date
FR2139870B1 (en) 1977-09-30
FR2139870A1 (en) 1973-01-12
DE2126905A1 (en) 1972-11-30
US3813664A (en) 1974-05-28

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee