GB1393212A - Electronic thermostats - Google Patents

Electronic thermostats

Info

Publication number
GB1393212A
GB1393212A GB1221873A GB1221873A GB1393212A GB 1393212 A GB1393212 A GB 1393212A GB 1221873 A GB1221873 A GB 1221873A GB 1221873 A GB1221873 A GB 1221873A GB 1393212 A GB1393212 A GB 1393212A
Authority
GB
United Kingdom
Prior art keywords
voltage
square wave
supply
wave signal
temp
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
GB1221873A
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.)
Electricite de France SA
Original Assignee
Electricite de France SA
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 Electricite de France SA filed Critical Electricite de France SA
Publication of GB1393212A publication Critical patent/GB1393212A/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
    • G05D23/1913—Control of temperature characterised by the use of electric means using an analogue comparing device delivering a series of pulses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Temperature (AREA)
GB1221873A 1972-06-28 1973-03-14 Electronic thermostats Expired GB1393212A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7223318A FR2191767A5 (https=) 1972-06-28 1972-06-28

Publications (1)

Publication Number Publication Date
GB1393212A true GB1393212A (en) 1975-05-07

Family

ID=9100961

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1221873A Expired GB1393212A (en) 1972-06-28 1973-03-14 Electronic thermostats

Country Status (2)

Country Link
FR (1) FR2191767A5 (https=)
GB (1) GB1393212A (https=)

Also Published As

Publication number Publication date
FR2191767A5 (https=) 1974-02-01

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee