GB614933A - Improvements in and relating to electronic control circuits - Google Patents

Improvements in and relating to electronic control circuits

Info

Publication number
GB614933A
GB614933A GB9427/46A GB942746A GB614933A GB 614933 A GB614933 A GB 614933A GB 9427/46 A GB9427/46 A GB 9427/46A GB 942746 A GB942746 A GB 942746A GB 614933 A GB614933 A GB 614933A
Authority
GB
United Kingdom
Prior art keywords
filament
pentode
march
reactor
relating
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
GB9427/46A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB614933A publication Critical patent/GB614933A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
    • H01J7/42—Means structurally associated with the tube or lamp for indicating defects or previous use
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/20—Control of fluid pressure characterised by the use of electric means
    • G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
    • G05D16/2066—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using controlling means acting on the pressure source

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Discharge Lamp (AREA)

Abstract

614,933. Automatic control systems. BRITISH THOMSON-HOUSTON CO., Ltd. March 27, 1946, No. 9427. Convention date, March 31, 1945. [Class 38 (iv)] [Also in Group XXXVI] To maintain constant the electron emission from the thermionic cathode 2 of an ionisation gauge 1, the filament 2 is fed from the mains transformer 10 through a saturable-reactor 27. The grid 3 is positively biassed, and variations in the resultant grid current cause corresponding variations in the bias applied to a pentode 31. The pentode, anode current flows through the D.C. winding of the reactor 27 and adjusts the impedance thereof in the corrective sense to stabilize the filament current and hence the filament emission.
GB9427/46A 1945-03-31 1946-03-27 Improvements in and relating to electronic control circuits Expired GB614933A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US614933XA 1945-03-31 1945-03-31

Publications (1)

Publication Number Publication Date
GB614933A true GB614933A (en) 1948-12-30

Family

ID=22036144

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9427/46A Expired GB614933A (en) 1945-03-31 1946-03-27 Improvements in and relating to electronic control circuits

Country Status (1)

Country Link
GB (1) GB614933A (en)

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