GB433698A - Improvements in electric valve current control systems for a.c. circuits - Google Patents
Improvements in electric valve current control systems for a.c. circuitsInfo
- Publication number
- GB433698A GB433698A GB31858/33A GB3185833A GB433698A GB 433698 A GB433698 A GB 433698A GB 31858/33 A GB31858/33 A GB 31858/33A GB 3185833 A GB3185833 A GB 3185833A GB 433698 A GB433698 A GB 433698A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valves
- load
- pairs
- resistance
- mid
- 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
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
- G05F1/32—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using magnetic devices having a controllable degree of saturation as final control devices
- G05F1/34—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using magnetic devices having a controllable degree of saturation as final control devices combined with discharge tubes or semiconductor devices
Abstract
433,698. Supplying consuming devices. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.- (Assignees of Lord, H. W. ; 1103, Palmer Avenue, Schenectady, New York, U.S.A.) Nov. 15, 1933, No. 31858. Convention date, Nov. 17, 1932. [Class 38 (iv)] An arrangement for controlling the voltage across a load 11 supplied from an A.C. generator 10 comprise a number of inductive windings across which pairs of reversely connected valves are connected means being provided for maintaining a predetermined division of load between the valves. Pairs of valves 15, 16 and 17, 18 are connected across the secondary winding 14 of the transformer 12, control of current being effected by supplying the grids from a phase-shifting circuit 23, 24, 25. A resistance 19 is connected between the mid-point of the pairs of valves and the mid-point of the winding 14 to effect load sharing. A thermal switch 26 is connected in the grid circuit and the resistance 1<a> used as a heater so that if an unbalance of load persists the switch opens and renders the valves non-conducting. Load division may also be effected by giving the transformer 12 a large leakage reactance. In a modification in which this is utilized the primary winding 13 is in two parts mounted on separate limbs which carry cophasal secondaries. The resistance 19 is connected in parallel with the series groups of valves.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US433698XA | 1932-11-17 | 1932-11-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB433698A true GB433698A (en) | 1935-08-15 |
Family
ID=21926818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31858/33A Expired GB433698A (en) | 1932-11-17 | 1933-11-15 | Improvements in electric valve current control systems for a.c. circuits |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB433698A (en) |
-
1933
- 1933-11-15 GB GB31858/33A patent/GB433698A/en not_active Expired
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