GB190022330A - Improvements in Alternate Current Measuring and Indicating Instruments. - Google Patents
Improvements in Alternate Current Measuring and Indicating Instruments.Info
- Publication number
- GB190022330A GB190022330A GB190022330DA GB190022330A GB 190022330 A GB190022330 A GB 190022330A GB 190022330D A GB190022330D A GB 190022330DA GB 190022330 A GB190022330 A GB 190022330A
- Authority
- GB
- United Kingdom
- Prior art keywords
- loop
- current
- coil
- stationary
- circuit
- 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
Abstract
22,330. Mordey, W. M. Dec. 7. Current and energy meters.-An alternating- current electrodynamometer contains a horizontally-pivoted loop f of a metal having a low temperature-resistance coefficient, forming a closed electric circuit of low resistance, provided with a pointer g, and controlled by a spring or a weight. Part of the loop is situated within the iron circuit c of a stationary transformer, having a fixed pressure coil b, by which a large secondary current is induced in the loop f. This coil b may be of copper wire. Another part of the loop surrounds a stationary coil a, carrying the main current, which causes deflection of the loop. The pointer moves over a suitably-graduated scale on which deflections are read ; or the loop may be connected by a spring to a torsion head, the rotation of which is observed, necessary to return the loop to its zero position, as in a Siemens' dynamometer. The loop f may consist of more than one turn of wire. The instrument may be used as a voltmeter or ampere meter, both stationary coils a, b being connected in one circuit, or the deflecting- coil a supplied with current from a secondary fixed on the transformer c. Such instruments are stated to be accurate on circuits having low power factors, and to be independent of frequency variations.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB190022330T | 1900-12-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB190022330A true GB190022330A (en) | 1901-08-31 |
Family
ID=32150351
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190022330D Expired GB190022330A (en) | 1900-12-07 | 1900-12-07 | Improvements in Alternate Current Measuring and Indicating Instruments. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB190022330A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2420580A (en) * | 1942-06-15 | 1947-05-13 | Standard Oil Dev Co | Magnetometer |
-
1900
- 1900-12-07 GB GB190022330D patent/GB190022330A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2420580A (en) * | 1942-06-15 | 1947-05-13 | Standard Oil Dev Co | Magnetometer |
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