GB8721955D0 - Electrical control device - Google Patents

Electrical control device

Info

Publication number
GB8721955D0
GB8721955D0 GB878721955A GB8721955A GB8721955D0 GB 8721955 D0 GB8721955 D0 GB 8721955D0 GB 878721955 A GB878721955 A GB 878721955A GB 8721955 A GB8721955 A GB 8721955A GB 8721955 D0 GB8721955 D0 GB 8721955D0
Authority
GB
United Kingdom
Prior art keywords
control device
electrical control
electrical
control
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.)
Withdrawn
Application number
GB878721955A
Other versions
GB2210215A (en
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.)
Knott A R
Original Assignee
Knott A R
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 Knott A R filed Critical Knott A R
Priority to GB8721955A priority Critical patent/GB2210215A/en
Publication of GB8721955D0 publication Critical patent/GB8721955D0/en
Publication of GB2210215A publication Critical patent/GB2210215A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
    • H01H47/18—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for introducing delay in the operation of the relay
    • 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
    • G05D23/275—Control of temperature characterised by the use of electric means with sensing element expanding, contracting, or fusing in response to changes of temperature
GB8721955A 1987-09-18 1987-09-18 Off period-timer Withdrawn GB2210215A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8721955A GB2210215A (en) 1987-09-18 1987-09-18 Off period-timer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8721955A GB2210215A (en) 1987-09-18 1987-09-18 Off period-timer

Publications (2)

Publication Number Publication Date
GB8721955D0 true GB8721955D0 (en) 1987-10-28
GB2210215A GB2210215A (en) 1989-06-01

Family

ID=10623982

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8721955A Withdrawn GB2210215A (en) 1987-09-18 1987-09-18 Off period-timer

Country Status (1)

Country Link
GB (1) GB2210215A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9317945D0 (en) * 1993-08-28 1993-10-13 Jones Roger S A fuel saving device
GB2286064A (en) * 1994-02-01 1995-08-02 David William Champion Central heating control unit
GB2490482A (en) * 2011-04-26 2012-11-07 Kenneth Jenkinson Meadows D Elkar Heating system energy saving device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2113022A5 (en) * 1970-11-05 1972-06-23 Magneti Marelli Spa
US3721866A (en) * 1971-08-23 1973-03-20 Robertshaw Controls Co Electrical time lock-out system
US3796061A (en) * 1972-12-15 1974-03-12 Essex International Inc Protective device for refrigeration compressors
DE2344471C3 (en) * 1973-09-04 1981-04-23 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Control device for a burner
US4038061A (en) * 1975-12-29 1977-07-26 Heil-Quaker Corporation Air conditioner control
GB2027949A (en) * 1978-08-09 1980-02-27 Servotomic Ltd Central heating systems
GB2136988B (en) * 1983-03-16 1987-05-13 Pixel Plus Limited Central heating boiler control unit
GB2151815A (en) * 1983-12-19 1985-07-24 Bernard Joseph Jelley An electronic switching device fitted to boilers to save fuel

Also Published As

Publication number Publication date
GB2210215A (en) 1989-06-01

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)