GB190813957A - An Improved Regulating Device for Electric Circuits. - Google Patents
An Improved Regulating Device for Electric Circuits.Info
- Publication number
- GB190813957A GB190813957A GB190813957DA GB190813957A GB 190813957 A GB190813957 A GB 190813957A GB 190813957D A GB190813957D A GB 190813957DA GB 190813957 A GB190813957 A GB 190813957A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- resistance
- volt
- meter
- magnet
- 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
Landscapes
- Sewing Machines And Sewing (AREA)
- Adjustable Resistors (AREA)
- Feedback Control In General (AREA)
Abstract
13,957. Ritchie, F. July 1. Regulating ; switches.-A current regulator, for automatically compensating for variations of voltage or of resistance due to changes of temperature in telautograph installations &c., consists of a voltmeter the arm of which carries a contact arranged to swing clear of, and to be brought into contact with, a rheostat, by means of an electro-magnet energized from the circuit to be regulated, or from a derived circuit. Variations of resistance due to temperature changes are compensated for by placing in the volt-meter circuit a resistance of such a valve and temperature coefficient that its resistance will vary proportionately with that of the circuit to be controlled. The moving coil of the volt-meter a is provided with a pointer b carrying a spring contact c adapted to swing clear of the rheostat e. After the circuit has been closed by the switch h, the armature j of the electro-magnet i, adjusted to be moved under approximately full current, presses the contact c against the rheostat e, thereby shortcircuiting a portion of the latter. To compensate for variations of resistance due to temperature changes, a resistance k is placed in series with the volt-meter, of such a value and temperature coefficient that its resistance will vary proportionally with that of the coil g. When the circuit to be regulated is non-inductive, the volt-meter a is permanently connected to the source, so that the armature j is not operated before the contact c is in its correct position. This operation may also be obtained by short circuiting the coil i<1> of the electro-magnet until current is established in the circuit to be regulated ; or the magnet may be placed in an independent circuit closed by a relay energized from the main circuit. To compensate for variations of voltage or resistance while the circuit to be regulated is closed, the coil i<1> of the electro-magnet is periodically short-circuited, or its circuit broken, thereby freeing the arm of the volt-meter.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB190813957T | 1908-07-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB190813957A true GB190813957A (en) | 1909-07-01 |
Family
ID=32437832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190813957D Expired GB190813957A (en) | 1908-07-01 | 1908-07-01 | An Improved Regulating Device for Electric Circuits. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB190813957A (en) |
-
1908
- 1908-07-01 GB GB190813957D patent/GB190813957A/en not_active Expired
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