GB1486416A - Methods of and apparatus for measuring capacitance - Google Patents

Methods of and apparatus for measuring capacitance

Info

Publication number
GB1486416A
GB1486416A GB4672973A GB4672973A GB1486416A GB 1486416 A GB1486416 A GB 1486416A GB 4672973 A GB4672973 A GB 4672973A GB 4672973 A GB4672973 A GB 4672973A GB 1486416 A GB1486416 A GB 1486416A
Authority
GB
United Kingdom
Prior art keywords
capacitance
source
oct
proportional
detector
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
GB4672973A
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.)
Avo Ltd
Original Assignee
Avo 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 Avo Ltd filed Critical Avo Ltd
Priority to GB4672973A priority Critical patent/GB1486416A/en
Publication of GB1486416A publication Critical patent/GB1486416A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
    • G01R27/2605—Measuring capacitance

Landscapes

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

Abstract

1486416 Measuring capacitance AVO Ltd 4 Oct 1974 [5 Oct 1973] 46729/73 Heading G1 An unknown capacitance Cx, shown in Fig. 2 as comprising a single capacitor shunted by two series-connected capacitors, is measured by opposing two currents through a detector D, the first current arising from a source S and being proportional to a known capacitance C s and the second also arising from the source S and being proportional to the capacitance Cx to be measured, this capacitance being transformer coupled to the source S and the resulting current being transformer coupled to the detector D. The arrangement is particular adapted for measuring inter-conductor capacitances of a multi-core cable, where each core also has a capacitance to earth. In the preferred embodiments each transformer has an appropriate screen between its windings, and each is appropriately tapped for testing either a single cable quad or a pair of such quads.
GB4672973A 1974-10-04 1974-10-04 Methods of and apparatus for measuring capacitance Expired GB1486416A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4672973A GB1486416A (en) 1974-10-04 1974-10-04 Methods of and apparatus for measuring capacitance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4672973A GB1486416A (en) 1974-10-04 1974-10-04 Methods of and apparatus for measuring capacitance

Publications (1)

Publication Number Publication Date
GB1486416A true GB1486416A (en) 1977-09-21

Family

ID=10442372

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4672973A Expired GB1486416A (en) 1974-10-04 1974-10-04 Methods of and apparatus for measuring capacitance

Country Status (1)

Country Link
GB (1) GB1486416A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0555526A1 (en) * 1992-02-08 1993-08-18 VEGA Grieshaber KG Assembly for floating potential capacitance measurement, in particular for capacitive filling level measurement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0555526A1 (en) * 1992-02-08 1993-08-18 VEGA Grieshaber KG Assembly for floating potential capacitance measurement, in particular for capacitive filling level measurement

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee