GB1295248A - - Google Patents

Info

Publication number
GB1295248A
GB1295248A GB1295248DA GB1295248A GB 1295248 A GB1295248 A GB 1295248A GB 1295248D A GB1295248D A GB 1295248DA GB 1295248 A GB1295248 A GB 1295248A
Authority
GB
United Kingdom
Prior art keywords
error
circuit
time
transistor
potentiometer
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
Other languages
English (en)
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 filed Critical
Publication of GB1295248A publication Critical patent/GB1295248A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D21/00—Control of chemical or physico-chemical variables, e.g. pH value
    • G05D21/02—Control of chemical or physico-chemical variables, e.g. pH value characterised by the use of electric means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Electronic Switches (AREA)
GB1295248D 1969-01-14 1969-01-14 Expired GB1295248A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB225869 1969-01-14

Publications (1)

Publication Number Publication Date
GB1295248A true GB1295248A (enrdf_load_stackoverflow) 1972-11-08

Family

ID=9736382

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1295248D Expired GB1295248A (enrdf_load_stackoverflow) 1969-01-14 1969-01-14

Country Status (1)

Country Link
GB (1) GB1295248A (enrdf_load_stackoverflow)

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Legal Events

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