FR1422918A - Agencements de détection de différences de potentiels - Google Patents

Agencements de détection de différences de potentiels

Info

Publication number
FR1422918A
FR1422918A FR992030A FR992030A FR1422918A FR 1422918 A FR1422918 A FR 1422918A FR 992030 A FR992030 A FR 992030A FR 992030 A FR992030 A FR 992030A FR 1422918 A FR1422918 A FR 1422918A
Authority
FR
France
Prior art keywords
arrangements
potential differences
detecting potential
detecting
differences
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
FR992030A
Other languages
English (en)
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.)
English Electric Co Ltd
Original Assignee
English Electric Co Ltd
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 English Electric Co Ltd filed Critical English Electric Co Ltd
Application granted granted Critical
Publication of FR1422918A publication Critical patent/FR1422918A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/10—Measuring sum, difference or ratio
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
    • G01N33/0063—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display using a threshold to release an alarm or displaying means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R17/00—Measuring arrangements involving comparison with a reference value, e.g. bridge
    • G01R17/10—AC or DC measuring bridges
    • G01R17/16—AC or DC measuring bridges with discharge tubes or semiconductor devices in one or more arms of the bridge, e.g. voltmeter using a difference amplifier
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
    • G01R19/16576—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing DC or AC voltage with one threshold

Landscapes

  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Power Engineering (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Emergency Alarm Devices (AREA)
  • Measurement Of Current Or Voltage (AREA)
FR992030A 1963-10-22 1964-10-20 Agencements de détection de différences de potentiels Expired FR1422918A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB41585/63A GB1048426A (en) 1963-10-22 1963-10-22 Improvements relating to potential difference detecting arrangements

Publications (1)

Publication Number Publication Date
FR1422918A true FR1422918A (fr) 1966-01-03

Family

ID=10420378

Family Applications (1)

Application Number Title Priority Date Filing Date
FR992030A Expired FR1422918A (fr) 1963-10-22 1964-10-20 Agencements de détection de différences de potentiels

Country Status (7)

Country Link
US (1) US3355729A (fr)
JP (1) JPS4326560B1 (fr)
BE (1) BE654691A (fr)
DE (1) DE1256320B (fr)
FR (1) FR1422918A (fr)
GB (1) GB1048426A (fr)
NL (1) NL6412297A (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3548398A (en) * 1968-01-11 1970-12-15 Walter E Strimling Switch position and continuity indicator for a pair of heating circuits
US3852734A (en) * 1972-09-28 1974-12-03 R Truax Antenna insulation failure detector
US4025850A (en) * 1975-10-01 1977-05-24 Joseph Spiteri Passive, solid state wide range voltage checker
FR2417764A1 (fr) * 1978-02-15 1979-09-14 Nudelmont Jean Claude Systeme de surveillance du degre de pollution et du risque d'incendie
DE4221922C1 (de) * 1992-07-03 1994-01-13 Bosch Gmbh Robert Wärmetönungssensor
US5953057A (en) * 1996-09-03 1999-09-14 Sensormatic Electronics Corporation Video termination detector with data receiver

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2907932A (en) * 1954-08-16 1959-10-06 Honeywell Regulator Co Phase discriminating apparatus
US2891195A (en) * 1957-12-03 1959-06-16 Ca Nat Research Council Lamp flasher with daylight-responsive inhibiting means
GB1013682A (en) * 1960-12-15 1965-12-15 English Electric Co Ltd Improvements in and relating to gas detecting apparatus
NL275018A (fr) * 1961-02-24

Also Published As

Publication number Publication date
US3355729A (en) 1967-11-28
DE1256320B (de) 1967-12-14
GB1048426A (en) 1966-11-16
JPS4326560B1 (fr) 1968-11-14
NL6412297A (fr) 1965-04-23
BE654691A (fr) 1965-02-15

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