GB888508A - Improvements in or relating to electrical control circuits - Google Patents
Improvements in or relating to electrical control circuitsInfo
- Publication number
- GB888508A GB888508A GB3984658A GB3984658A GB888508A GB 888508 A GB888508 A GB 888508A GB 3984658 A GB3984658 A GB 3984658A GB 3984658 A GB3984658 A GB 3984658A GB 888508 A GB888508 A GB 888508A
- Authority
- GB
- United Kingdom
- Prior art keywords
- load
- signal
- transformer
- feed
- transistors
- 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
- 230000004048 modification Effects 0.000 abstract 2
- 238000012986 modification Methods 0.000 abstract 2
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
- G05F1/40—Regulating voltage or current wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices
- G05F1/44—Regulating voltage or current wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only
- G05F1/445—Regulating voltage or current wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only being transistors in series with the load
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Rectifiers (AREA)
Abstract
888,508. Control systems for consuming devices; rectifying. SIEMENS-SCHUCKERTWERKE A.G. Dec. 10, 1958 [Dec. 11, 1957], No. 39846/58. Classes 38 (2) and 38 (4). The A.C. or D.C. current supplied to a load from an A.C. source is controlled by one or more transistors in series with the load, having a conduction angle controlled by a first signal, with heavy positive feed-back providing a second signal to ensure that the transistor is fully conductive during the selected portion of the input half-wave. A load R L is supplied with alternating current from a source O, R, through a back-to-back pair of common emitter transistors and diodes which conduct on alternate half-cycles for periods determined in an unspecified manner by an A.C. control signal applied to transformer 5. A current transformer 4 in series with the load provides the feed-back signal. In a modification, Fig. 2 (not shown), the two diodes and transistors form a full-wave rectifying circuit to supply a D.C. load, the feed-back transformer having a tapped primary between each transistor and the load. In a further modification, Fig. 4 (not shown), a single transistor controls the pulsating output of a full-wave bridge rectifier.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES0056200 | 1957-12-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB888508A true GB888508A (en) | 1962-01-31 |
Family
ID=7490937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3984658A Expired GB888508A (en) | 1957-12-11 | 1958-12-10 | Improvements in or relating to electrical control circuits |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH369507A (en) |
| GB (1) | GB888508A (en) |
-
1958
- 1958-12-04 CH CH6691058A patent/CH369507A/en unknown
- 1958-12-10 GB GB3984658A patent/GB888508A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH369507A (en) | 1963-05-31 |
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