GB1194521A - Improvements in or relating to Temperature Control Systems - Google Patents

Improvements in or relating to Temperature Control Systems

Info

Publication number
GB1194521A
GB1194521A GB606/69A GB60669A GB1194521A GB 1194521 A GB1194521 A GB 1194521A GB 606/69 A GB606/69 A GB 606/69A GB 60669 A GB60669 A GB 60669A GB 1194521 A GB1194521 A GB 1194521A
Authority
GB
United Kingdom
Prior art keywords
transistor
valve
relay
circuit
switch
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
GB606/69A
Other languages
English (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.)
Honeywell Inc
Original Assignee
Honeywell 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 Honeywell Inc filed Critical Honeywell Inc
Publication of GB1194521A publication Critical patent/GB1194521A/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
    • 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
    • G05D23/1912—Control of temperature characterised by the use of electric means using an analogue comparing device whose output amplitude can take more than two discrete values

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Temperature (AREA)
  • Control Of Combustion (AREA)
GB606/69A 1968-01-26 1969-01-03 Improvements in or relating to Temperature Control Systems Expired GB1194521A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US70077068A 1968-01-26 1968-01-26

Publications (1)

Publication Number Publication Date
GB1194521A true GB1194521A (en) 1970-06-10

Family

ID=24814799

Family Applications (1)

Application Number Title Priority Date Filing Date
GB606/69A Expired GB1194521A (en) 1968-01-26 1969-01-03 Improvements in or relating to Temperature Control Systems

Country Status (7)

Country Link
US (1) US3482776A (US20020095090A1-20020718-M00002.png)
BE (1) BE727373A (US20020095090A1-20020718-M00002.png)
CH (1) CH491331A (US20020095090A1-20020718-M00002.png)
DE (1) DE1903706A1 (US20020095090A1-20020718-M00002.png)
FR (1) FR2000817A1 (US20020095090A1-20020718-M00002.png)
GB (1) GB1194521A (US20020095090A1-20020718-M00002.png)
NL (1) NL6900991A (US20020095090A1-20020718-M00002.png)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49106137A (US20020095090A1-20020718-M00002.png) * 1973-02-14 1974-10-08
FR2418953A1 (fr) * 1978-03-03 1979-09-28 Cepe Dispositif de regulation thermique d'une enceinte, notamment pour cristal piezoelectrique oscillant, et enceinte comportant un tel dispositif
CN105402857A (zh) * 2015-12-15 2016-03-16 广西电力职业技术学院 一种室内自动降温控制系统

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2245773A (en) * 1938-12-07 1941-06-17 Honeywell Regulator Co Temperature control system

Also Published As

Publication number Publication date
DE1903706A1 (de) 1969-09-04
CH491331A (fr) 1970-05-31
US3482776A (en) 1969-12-09
BE727373A (US20020095090A1-20020718-M00002.png) 1969-07-01
FR2000817A1 (US20020095090A1-20020718-M00002.png) 1969-09-12
NL6900991A (US20020095090A1-20020718-M00002.png) 1969-07-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees