GB860228A - Improvements relating to automatic electric control apparatus - Google Patents
Improvements relating to automatic electric control apparatusInfo
- Publication number
- GB860228A GB860228A GB42949/59A GB4294959A GB860228A GB 860228 A GB860228 A GB 860228A GB 42949/59 A GB42949/59 A GB 42949/59A GB 4294959 A GB4294959 A GB 4294959A GB 860228 A GB860228 A GB 860228A
- Authority
- GB
- United Kingdom
- Prior art keywords
- variable
- predetermined range
- control apparatus
- electric control
- improvements relating
- 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
- G05D23/2451—Details of the regulator
- G05D23/2456—Details of the regulator using selfs or transformers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Thermistors And Varistors (AREA)
- Rectifiers (AREA)
- Feedback Control In General (AREA)
- Thermally Actuated Switches (AREA)
- Lifting Devices For Agricultural Implements (AREA)
- Measuring Volume Flow (AREA)
Abstract
860,228. Automatic temperature-control systems. MICKLETHWAIT, E. W. E. (Garrett Corporation). May 10, 1957, No. 42949/59. Divided out of 860,227. Drawings to Specification. Class 38 (4). The Specification contains the same subjectmatter as Specification 860,227, but the claims relate to a system normally controlled in accordance with the deviation of a first variable from a datum value but which control is reduced or overriden by a limiting signal in accordance with a second variable when the second variable is outside a predetermined range, the limiting signal having zero value when the second variable is within the predetermined range but which has a value differing from zero when the second variable departs in either direction from the predetermined range. A circuit for producing a control signal effective when the second variable is outside the predetermined range is claimed in Specification 860,229.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB14964/57A GB860227A (en) | 1957-05-10 | 1957-05-10 | Improvements relating to automatic electric control apparatus |
GB42950/59A GB860229A (en) | 1957-05-10 | 1957-05-10 | Improvements relating to automatic electric control apparatus |
GB42949/59A GB860228A (en) | 1957-05-10 | 1959-05-10 | Improvements relating to automatic electric control apparatus |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB14964/57A GB860227A (en) | 1957-05-10 | 1957-05-10 | Improvements relating to automatic electric control apparatus |
GB42950/59A GB860229A (en) | 1957-05-10 | 1957-05-10 | Improvements relating to automatic electric control apparatus |
GB42949/59A GB860228A (en) | 1957-05-10 | 1959-05-10 | Improvements relating to automatic electric control apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB860228A true GB860228A (en) | 1961-02-01 |
Family
ID=62200133
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB14964/57A Expired GB860227A (en) | 1957-05-10 | 1957-05-10 | Improvements relating to automatic electric control apparatus |
GB42950/59A Expired GB860229A (en) | 1957-05-10 | 1957-05-10 | Improvements relating to automatic electric control apparatus |
GB42949/59A Expired GB860228A (en) | 1957-05-10 | 1959-05-10 | Improvements relating to automatic electric control apparatus |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB14964/57A Expired GB860227A (en) | 1957-05-10 | 1957-05-10 | Improvements relating to automatic electric control apparatus |
GB42950/59A Expired GB860229A (en) | 1957-05-10 | 1957-05-10 | Improvements relating to automatic electric control apparatus |
Country Status (1)
Country | Link |
---|---|
GB (3) | GB860227A (en) |
-
1957
- 1957-05-10 GB GB14964/57A patent/GB860227A/en not_active Expired
- 1957-05-10 GB GB42950/59A patent/GB860229A/en not_active Expired
-
1959
- 1959-05-10 GB GB42949/59A patent/GB860228A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB860229A (en) | 1961-02-01 |
GB860227A (en) | 1961-02-01 |
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