GB1189009A - Filament Protection for Hot Wire Detectors - Google Patents

Filament Protection for Hot Wire Detectors

Info

Publication number
GB1189009A
GB1189009A GB34873/67A GB3487367A GB1189009A GB 1189009 A GB1189009 A GB 1189009A GB 34873/67 A GB34873/67 A GB 34873/67A GB 3487367 A GB3487367 A GB 3487367A GB 1189009 A GB1189009 A GB 1189009A
Authority
GB
United Kingdom
Prior art keywords
bridge
current
supply
transistor
effective 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
GB34873/67A
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.)
Applied Biosystems Inc
Original Assignee
Perkin Elmer Corp
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 Perkin Elmer Corp filed Critical Perkin Elmer Corp
Publication of GB1189009A publication Critical patent/GB1189009A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/14—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature
    • G01N27/18—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by changes in the thermal conductivity of a surrounding material to be tested
    • G01N27/185—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by changes in the thermal conductivity of a surrounding material to be tested using a catharometer

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
GB34873/67A 1966-07-29 1967-07-28 Filament Protection for Hot Wire Detectors Expired GB1189009A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US56887266A 1966-07-29 1966-07-29

Publications (1)

Publication Number Publication Date
GB1189009A true GB1189009A (en) 1970-04-22

Family

ID=24273069

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34873/67A Expired GB1189009A (en) 1966-07-29 1967-07-28 Filament Protection for Hot Wire Detectors

Country Status (7)

Country Link
US (1) US3470355A (enExample)
CH (1) CH482188A (enExample)
DE (1) DE1648276A1 (enExample)
FR (1) FR1605449A (enExample)
GB (1) GB1189009A (enExample)
NL (1) NL6710467A (enExample)
SE (1) SE349865B (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2456950A1 (fr) * 1979-05-14 1980-12-12 Sereg Soc Catharometre
NL7906868A (nl) 1979-09-14 1981-03-17 Gould Godart Bv Gasanalysator.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2545343A (en) * 1946-02-18 1951-03-13 Bendix Aviat Corp Electric motor control system
US3040157A (en) * 1959-09-30 1962-06-19 North American Aviation Inc Temperature control servo system
US3197616A (en) * 1963-03-04 1965-07-27 Donald W Gade Temperature regulation circuit
US3369107A (en) * 1965-04-07 1968-02-13 Neff Instr Corp Temperature regulating circuit for an ink reservoir

Also Published As

Publication number Publication date
CH482188A (de) 1969-11-30
NL6710467A (enExample) 1968-01-30
FR1605449A (en) 1976-01-09
DE1648276A1 (de) 1971-07-22
US3470355A (en) 1969-09-30
SE349865B (enExample) 1972-10-09

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees