GB631991A - Improvements relating to electrical measuring instruments - Google Patents
Improvements relating to electrical measuring instrumentsInfo
- Publication number
- GB631991A GB631991A GB2167147A GB2167147A GB631991A GB 631991 A GB631991 A GB 631991A GB 2167147 A GB2167147 A GB 2167147A GB 2167147 A GB2167147 A GB 2167147A GB 631991 A GB631991 A GB 631991A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resistances
- voltage
- over
- load
- network
- 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
- G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Linear Motors (AREA)
Abstract
631,991. Phase difference and power factor measurements. EVERETT, EDGCUMBE, & CO., Ltd., and GRUCHY, J. N. DE. Aug. 7, 1947, No. 21671. [Class 37] To measure phase difference, e.g. power factor, on a permanent magnet moving coil, the current in a load Z is applied over transformer CT to a network of resistances R1, R2, rectifiers X1, X2, resistances R3, R4, and condensers C1, C2, and the voltage is applied across R5 over a network of resistances R6, R7, R8 and non-linear resistances R9, R10, so that the voltage across R5 is independent of variations of the voltage applied to the load-circuit Z. To make the circuit additionally independent of current variation, the output winding of the transformer CT may be connected to R1, R2 over a series resistance and a shunt non-linear resistance, (Figure accompanyirig Complete Specification, not shown).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2167147A GB631991A (en) | 1947-08-07 | 1947-08-07 | Improvements relating to electrical measuring instruments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2167147A GB631991A (en) | 1947-08-07 | 1947-08-07 | Improvements relating to electrical measuring instruments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB631991A true GB631991A (en) | 1949-11-14 |
Family
ID=10166861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2167147A Expired GB631991A (en) | 1947-08-07 | 1947-08-07 | Improvements relating to electrical measuring instruments |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB631991A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3068411A (en) * | 1959-04-06 | 1962-12-11 | Galman Herbert | Wattmeter circuit |
| US3154735A (en) * | 1960-10-21 | 1964-10-27 | Jr Edmund O Schweitzer | System for measuring phase and power factors in electric circuits including harmonicproducing means |
-
1947
- 1947-08-07 GB GB2167147A patent/GB631991A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3068411A (en) * | 1959-04-06 | 1962-12-11 | Galman Herbert | Wattmeter circuit |
| US3154735A (en) * | 1960-10-21 | 1964-10-27 | Jr Edmund O Schweitzer | System for measuring phase and power factors in electric circuits including harmonicproducing means |
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