GB904437A - Improvements in or relating to electronic controllers - Google Patents

Improvements in or relating to electronic controllers

Info

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
Application number
GB22232/58A
Inventor
Fritz Ludwig Felix Steghart
Peter Leslie Kershaw
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.)
Rheostatic Co Ltd
Original Assignee
Rheostatic Co 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 Rheostatic Co Ltd filed Critical Rheostatic Co Ltd
Priority to GB22232/58A priority Critical patent/GB904437A/en
Publication of GB904437A publication Critical patent/GB904437A/en
Expired legal-status Critical Current

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

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.
GB22232/58A 1958-07-10 1958-07-10 Improvements in or relating to electronic controllers Expired GB904437A (en)

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)

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