GB333962A - Improvements in apparatus for the making of measurements in connection with telephone and telegraph cables - Google Patents

Improvements in apparatus for the making of measurements in connection with telephone and telegraph cables

Info

Publication number
GB333962A
GB333962A GB1675729A GB1675729A GB333962A GB 333962 A GB333962 A GB 333962A GB 1675729 A GB1675729 A GB 1675729A GB 1675729 A GB1675729 A GB 1675729A GB 333962 A GB333962 A GB 333962A
Authority
GB
United Kingdom
Prior art keywords
bridge
arms
cable
telephone
condenser
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
GB1675729A
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.)
Callenders Cable and Construction Co Ltd
Original Assignee
Callenders Cable and Construction 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 Callenders Cable and Construction Co Ltd filed Critical Callenders Cable and Construction Co Ltd
Priority to GB1675729A priority Critical patent/GB333962A/en
Publication of GB333962A publication Critical patent/GB333962A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

333,962. Callender's Cable & Construction Co., Ltd., and Brazier, L. G. May 31, 1929. Inductances and capacities, measuring. - Bridge apparatus for measuring the leakance and capacitance of a telephone &c., cable has resistance ratio arms E, F and measurement arms, the latter arms comprising a fixed resistance H shunted by a fixed condenser K, and a variable resistance J shunted by a variable condenser N, the cable M under test being directly connected across the variable measurement arm and no change of connections being thereafter made, the bridge arms being screened in two groups, one group comprising the apparatus meeting at the point A of the bridge and the other the apparatus meeting at the point D, the screens being connected respectively to the points Band C. An adjustable condenser P balances the bridge to earth capacities of the points B and C.
GB1675729A 1929-05-31 1929-05-31 Improvements in apparatus for the making of measurements in connection with telephone and telegraph cables Expired GB333962A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1675729A GB333962A (en) 1929-05-31 1929-05-31 Improvements in apparatus for the making of measurements in connection with telephone and telegraph cables

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1675729A GB333962A (en) 1929-05-31 1929-05-31 Improvements in apparatus for the making of measurements in connection with telephone and telegraph cables

Publications (1)

Publication Number Publication Date
GB333962A true GB333962A (en) 1930-08-28

Family

ID=10083080

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1675729A Expired GB333962A (en) 1929-05-31 1929-05-31 Improvements in apparatus for the making of measurements in connection with telephone and telegraph cables

Country Status (1)

Country Link
GB (1) GB333962A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2168495A (en) * 1984-12-15 1986-06-18 Licentia Gmbh Compensation for parasitic capacitances in a screened resistance device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2168495A (en) * 1984-12-15 1986-06-18 Licentia Gmbh Compensation for parasitic capacitances in a screened resistance device

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