GB1486416A - Methods of and apparatus for measuring capacitance - Google Patents
Methods of and apparatus for measuring capacitanceInfo
- 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
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.
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)
| 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 |
-
1974
- 1974-10-04 GB GB4672973A patent/GB1486416A/en not_active Expired
Cited By (1)
| 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 |