GB635852A - Improvements in electrical measuring bridges - Google Patents

Improvements in electrical measuring bridges

Info

Publication number
GB635852A
GB635852A GB2516848A GB2516848A GB635852A GB 635852 A GB635852 A GB 635852A GB 2516848 A GB2516848 A GB 2516848A GB 2516848 A GB2516848 A GB 2516848A GB 635852 A GB635852 A GB 635852A
Authority
GB
United Kingdom
Prior art keywords
resistance
phase
limits
lies
bridge
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
GB2516848A
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.)
ALEXANDER MILLER ANDREW
Welwyn Electrcal Laboratories Ltd
Original Assignee
ALEXANDER MILLER ANDREW
Welwyn Electrcal Laboratories 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 ALEXANDER MILLER ANDREW, Welwyn Electrcal Laboratories Ltd filed Critical ALEXANDER MILLER ANDREW
Priority to GB2516848A priority Critical patent/GB635852A/en
Publication of GB635852A publication Critical patent/GB635852A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01R17/105—AC or DC measuring bridges for measuring impedance or resistance

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

635,852. Measuring bridges. DENES, P., ANDREW, A. M., and WELWYN ELECTRICAL LABORATORIES, Ltd. Sept. 15, 1947, No. 25168. [Class 37] To determine whether an electrical component (e.g. capacitance, inductance or resistance) lies between pre-determined limits, it is connected in series with a standard component, and these two components are connected in parallel with two pairs of impedances, the ratio of one pair corresponding to the lower limit, and the ratio of the other pair corresponding to the upper limit, and the phase of the voltage at the junction point of each pair is compared. The invention is described with reference to a system for determining whether a resistance 11 falls within pre-determined limits. An A.C. bridge 11, 12, 13, 14 is such that balance is obtained if resistance 11 is at the lower limit and an A.C. bridge 11, 12, 15, 16 is in balance if the resistance 11 is at the upper limit. If the resistance lies between these limits, the phase between 17 and 18 will be opposite to the phase between 17 and 19 and valve 22 will be non-conductive. If the resistance lies beyond these limits, the phase between 17 and 19 and valve 22 will conduct to actuate relay 23 and light signal lamp 24. Signal lamp 25 is lit if the resistance is within the pre-determined limits.
GB2516848A 1947-09-15 1947-09-15 Improvements in electrical measuring bridges Expired GB635852A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2516848A GB635852A (en) 1947-09-15 1947-09-15 Improvements in electrical measuring bridges

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2516848A GB635852A (en) 1947-09-15 1947-09-15 Improvements in electrical measuring bridges

Publications (1)

Publication Number Publication Date
GB635852A true GB635852A (en) 1950-04-19

Family

ID=10223320

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2516848A Expired GB635852A (en) 1947-09-15 1947-09-15 Improvements in electrical measuring bridges

Country Status (1)

Country Link
GB (1) GB635852A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2958823A (en) * 1956-03-13 1960-11-01 Marquardt Corp Voltage comparator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2958823A (en) * 1956-03-13 1960-11-01 Marquardt Corp Voltage comparator

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