GB874231A - Improvements in electrical control systems - Google Patents

Improvements in electrical control systems

Info

Publication number
GB874231A
GB874231A GB26297/57A GB2629757A GB874231A GB 874231 A GB874231 A GB 874231A GB 26297/57 A GB26297/57 A GB 26297/57A GB 2629757 A GB2629757 A GB 2629757A GB 874231 A GB874231 A GB 874231A
Authority
GB
United Kingdom
Prior art keywords
control systems
electrical control
aug
pair
replacing
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
GB26297/57A
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.)
Sangamo Weston Ltd
Atos Origin IT Services Inc
Original Assignee
Sangamo Weston Ltd
Sangamo Weston Inc
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 Sangamo Weston Ltd, Sangamo Weston Inc filed Critical Sangamo Weston Ltd
Publication of GB874231A publication Critical patent/GB874231A/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
    • G05D23/22—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 being a thermocouple
    • G05D23/2236—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 being a thermocouple details of the regulator
    • G05D23/2237—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 being a thermocouple details of the regulator using discharge tubes

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Feedback Control In General (AREA)
  • Control Of Temperature (AREA)
  • Control Of El Displays (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Led Devices (AREA)

Abstract

874,231. Automatic temperature-control systems. SANGAMO WESTON Ltd. Aug. 20, 1957 [Aug. 21, 1956], No. 26297/57. Drawings to Specification. Addition to 750,898. Class 38 (4). The control system described in the parent Specification is modified by replacing the pair of biased diodes in Fig. 1 thereof by a pair of Zener diodes connected in series so that until their breakdown voltage is reached no negative feedback takes place.
GB26297/57A 1952-01-21 1957-08-20 Improvements in electrical control systems Expired GB874231A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US750898XA 1952-01-21 1952-01-21
US874231XA 1956-08-21 1956-08-21

Publications (1)

Publication Number Publication Date
GB874231A true GB874231A (en) 1961-08-02

Family

ID=62044408

Family Applications (2)

Application Number Title Priority Date Filing Date
GB32642/52A Expired GB750898A (en) 1952-01-21 1952-12-23 Improvements in electrical control systems
GB26297/57A Expired GB874231A (en) 1952-01-21 1957-08-20 Improvements in electrical control systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB32642/52A Expired GB750898A (en) 1952-01-21 1952-12-23 Improvements in electrical control systems

Country Status (1)

Country Link
GB (2) GB750898A (en)

Also Published As

Publication number Publication date
GB750898A (en) 1956-06-20

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