GB904437A - Improvements in or relating to electronic controllers - Google Patents
Improvements in or relating to electronic controllersInfo
- Publication number
- GB904437A GB904437A GB22232/58A GB2223258A GB904437A GB 904437 A GB904437 A GB 904437A GB 22232/58 A GB22232/58 A GB 22232/58A GB 2223258 A GB2223258 A GB 2223258A GB 904437 A GB904437 A GB 904437A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bridge
- relay
- temperature
- july
- energized
- 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
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1906—Control of temperature characterised by the use of electric means using an analogue comparing device
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
904,437. Temperature measurement. RHEOSTATIC CO. Ltd. July 6, 1959 [July 10, 1958], No. 22232/58. Class 40 (1). [Also in Group XXXV] The output of an A.C. energized bridge, which includes a temperature-responsive resistor 1, is amplified by a pair of transistors and, via a matching transformer 10 energizes windings 11, 12 on a balanced relay 13. Two opposed windings 14, 15 are energized from the same A.C. source as the bridge so that the relay 13 is actuated in accordance with the relative phases of the bridge output and the reference. The relay 13 controls a reversible servomotor 22 to rebalance the bridge and to correct the temperature being measured by resistor 1. In a modification, Fig. 2 (not shown), the matching transformer is omitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB22232/58A GB904437A (en) | 1958-07-10 | 1958-07-10 | Improvements in or relating to electronic controllers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB22232/58A GB904437A (en) | 1958-07-10 | 1958-07-10 | Improvements in or relating to electronic controllers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB904437A true GB904437A (en) | 1962-08-29 |
Family
ID=10176064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22232/58A Expired GB904437A (en) | 1958-07-10 | 1958-07-10 | Improvements in or relating to electronic controllers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB904437A (en) |
-
1958
- 1958-07-10 GB GB22232/58A patent/GB904437A/en not_active Expired
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