GB683590A - Improvements in or relating to devices for proportional electric control - Google Patents

Improvements in or relating to devices for proportional electric control

Info

Publication number
GB683590A
GB683590A GB1143/51A GB114351A GB683590A GB 683590 A GB683590 A GB 683590A GB 1143/51 A GB1143/51 A GB 1143/51A GB 114351 A GB114351 A GB 114351A GB 683590 A GB683590 A GB 683590A
Authority
GB
United Kingdom
Prior art keywords
potentiometer
slider
amplifier
cock
sliders
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
Application number
GB1143/51A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB683590A publication Critical patent/GB683590A/en
Expired legal-status Critical Current

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
    • G05B11/00—Automatic controllers
    • G05B11/01—Automatic controllers electric
    • G05B11/012—Automatic controllers electric details of the transmission means
    • G05B11/013—Automatic controllers electric details of the transmission means using discharge tubes

Abstract

683,590. Automatic temperature control systems. PHILIPS ELECTRICAL INDUSTRIES, Ltd. May 11, 1951 [May 16, 1950], No. 11143/51. Class 38 (iv). In an automatic control system for a variable the position of the slider of a first potentiometer is varied in accordance with the magnitude of the variable and the position of the slider of a second potentiometer is varied in accordance with the position of means correcting the variable, the ends of the second potentiometer being connected to two further slides of the first potentiometer and the means correcting the variable being controlled by the voltage between the first-mentioned slider of the first potentiometer and the slider of the second potentiometer. As shown, the temperature of a furnace 1 is detected by a thermo-electric element 6 the output voltage of which is applied to an amplifier 7 to produce movement of a slider 10 of a potentiometer 9 connected to an A.C. or D.C. source 8. The output voltage of potentiometer 9 is applied to an amplifier 15 controlling a two-way and off relay 16 so that an electric motor 5 runs in the appropriate direction to correct deviations of furnace temperature from a desired value by adjustment of a cock 4 in a pipe 3 supplying oil to the furnace. The sense of operation of relay 16 is dependent on phase or polarity of the input to amplifier 15 according to whether source 8 is A.C. or D.C. Follow-up is provided by a potentiometer 13 the slider 14 of which is adjusted with cock 4 and the output voltage of which is applied to the input of amplifier 15 in opposition to the output of potentiometer 9. Potentiometer 13 is supplied from further sliders 11 and 12 on potentiometer 9, relative movement of these sliders setting the temperatures at which cock 4 is fully open and fully closed, and movement of the sliders in the same direction setting furnace temperature. On a scale (not shown) associated with potentiometer 9, slider 10 indicates furnace temperature, and sliders 11 and 12 the temperatures corresponding to cock 4 fully open and fully closed. Adjustment of the voltage of source 8 and the gain of amplifier 15 is referred to.
GB1143/51A 1950-05-16 1951-05-11 Improvements in or relating to devices for proportional electric control Expired GB683590A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL683590X 1950-05-16

Publications (1)

Publication Number Publication Date
GB683590A true GB683590A (en) 1952-12-03

Family

ID=19805586

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1143/51A Expired GB683590A (en) 1950-05-16 1951-05-11 Improvements in or relating to devices for proportional electric control

Country Status (3)

Country Link
DE (1) DE849443C (en)
GB (1) GB683590A (en)
NL (1) NL152567C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1128001B (en) * 1959-03-31 1962-04-19 Licentia Gmbh Controller with a changeable resistor arrangement for the selection of the proportional range
DE1274720B (en) * 1963-07-09 1968-08-08 Cons Electrodynamics Corp Control device with an amplifier

Also Published As

Publication number Publication date
NL152567C (en)
DE849443C (en) 1952-09-15

Similar Documents

Publication Publication Date Title
GB1463988A (en) Systems for controlling the temperature within an enclosure
US2390793A (en) Control apparatus
GB683590A (en) Improvements in or relating to devices for proportional electric control
US2367869A (en) Control apparatus
GB686607A (en) Improvements in or relating to electrical temperature regulating apparatus
US3214660A (en) Control system
US2755421A (en) Device for proportional electric control
US3044002A (en) Manual to automatic transfer motor control system
GB573028A (en) Improvements in or relating to temperature control systems
US2788441A (en) Measuring and controlling apparatus
GB1025144A (en) Improvements in or relating to the control of industrial installations
GB1111747A (en) Controllers for actuators controlling conditions in a system
US2849667A (en) Servo systems
US2743402A (en) Measuring and control apparatus
GB759553A (en) Improvements in or relating to electronic regulating apparatus
GB654041A (en) Improvements in or relating to flight control systems for aircraft
GB954261A (en) Improvements in control systems for prime movers
US3849674A (en) Signal comparator circuit for analog control systems
US2473905A (en) Automatic control system
GB1288329A (en)
SU796789A2 (en) Device for automatic control of objects with delay
SU391358A1 (en) AIR CONDITIONING INSTALLATION
GB1224011A (en) Electronic controller for process control systems
GB921435A (en) Improvements in and relating to proportional control
GB588488A (en) Improvements relating to electrical automatic control systems