ES351125A1 - Device for regulating temperature - Google Patents
Device for regulating temperatureInfo
- Publication number
- ES351125A1 ES351125A1 ES351125A ES351125A ES351125A1 ES 351125 A1 ES351125 A1 ES 351125A1 ES 351125 A ES351125 A ES 351125A ES 351125 A ES351125 A ES 351125A ES 351125 A1 ES351125 A1 ES 351125A1
- Authority
- ES
- Spain
- Prior art keywords
- compared
- output
- passed
- thyristor
- thyristors
- 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
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B5/00—Anti-hunting arrangements
- G05B5/01—Anti-hunting arrangements electric
-
- 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
- G05D23/1909—Control of temperature characterised by the use of electric means using an analogue comparing device whose output amplitude can only take two discrete values
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Temperature (AREA)
Abstract
In an automatic control system having a sensor 1 output compared with reference Ve the error being amplified at 6 and passed through an element having an adjustable differential between on and off levels which control a switch 4 e.g. a pair of reverse parallel thyristors which energize a heating element 9, the output of amplifier is compared with a signal indicative of thyristor current through a delay element 10. In a specific embodiment Fig.3 (not shown) the output from a current transformer (10a) is rectified and compared with the error signal at (7) and passed through a differential element (8) into a thyristor control device (11). The frequency of operation of the system is made high to minimize the temperature errors. Direct current may also be used for the system by suitable adaption and by providing extra circuits for extinguishing the thyristors.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL0055897 | 1967-03-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES351125A1 true ES351125A1 (en) | 1969-05-16 |
Family
ID=7277319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES351125A Expired ES351125A1 (en) | 1967-03-03 | 1968-03-01 | Device for regulating temperature |
Country Status (7)
Country | Link |
---|---|
AT (1) | AT285986B (en) |
BE (1) | BE711589A (en) |
CH (1) | CH466862A (en) |
DE (1) | DE1673495A1 (en) |
ES (1) | ES351125A1 (en) |
FR (1) | FR1556604A (en) |
GB (1) | GB1211296A (en) |
-
1967
- 1967-03-03 DE DE19671673495 patent/DE1673495A1/en active Pending
-
1968
- 1968-03-01 ES ES351125A patent/ES351125A1/en not_active Expired
- 1968-03-01 GB GB00157/68A patent/GB1211296A/en not_active Expired
- 1968-03-01 FR FR1556604D patent/FR1556604A/fr not_active Expired
- 1968-03-01 CH CH312868A patent/CH466862A/en unknown
- 1968-03-01 AT AT202468A patent/AT285986B/en not_active IP Right Cessation
- 1968-03-01 BE BE711589D patent/BE711589A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
BE711589A (en) | 1968-07-15 |
FR1556604A (en) | 1969-02-07 |
DE1673495A1 (en) | 1972-03-09 |
CH466862A (en) | 1968-12-31 |
GB1211296A (en) | 1970-11-04 |
AT285986B (en) | 1970-11-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1030632A (en) | Apparatus for and method of zero switching | |
GB1046120A (en) | Temperature control apparatus | |
GB1441549A (en) | Electrically heated surgical cutting instrument | |
GB1454348A (en) | Pyrometric method for the non-contact measurement of temperature | |
GB1252536A (en) | ||
ES355560A1 (en) | Apparatus and method for regulating the temperature of an electrical furnace | |
ES351125A1 (en) | Device for regulating temperature | |
GB1010818A (en) | Frequency standard | |
GB689799A (en) | Operation of x-ray tubes | |
GB1252280A (en) | ||
ES279739A1 (en) | Temperature measuring apparatus | |
GB990572A (en) | Improvements in or relating to temperature control systems | |
GB972256A (en) | Phase controlled servo system | |
GB1007508A (en) | Measuring bridge apparatus for tripping or alarm purposes | |
JPS5698913A (en) | Temperature control circuit for amplifier | |
GB964390A (en) | Improvements in or relating to apparatus for measuring the electrical conductivity of a liquid | |
GB1141889A (en) | Pulsed electric heating system | |
Butusov | Automatic control measuring and regulating instruments | |
JPS5355036A (en) | Temperature control device for fixing roller | |
GB1019972A (en) | Improvements in or relating to photographic processing apparatus | |
JPS5432925A (en) | Signal processing circuit | |
GB1059866A (en) | Temperature-controlled electric switching device | |
JPS5245379A (en) | Circuit for detecting abnormal rise of temperature | |
GB625282A (en) | Improvements in or relating to apparatus for measuring and controlling radiant lightor heat energy | |
JPS52126189A (en) | Filament heat controlling device |