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GB723826A - Improvements relating to electrical controlling apparatus - Google Patents

Improvements relating to electrical controlling apparatus

Info

Publication number
GB723826A
GB723826A GB2073052A GB2073052A GB723826A GB 723826 A GB723826 A GB 723826A GB 2073052 A GB2073052 A GB 2073052A GB 2073052 A GB2073052 A GB 2073052A GB 723826 A GB723826 A GB 723826A
Authority
GB
United Kingdom
Prior art keywords
aug
automatic
controlling apparatus
improvements relating
control system
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
GB2073052A
Inventor
James Reilly Boundy
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.)
Evershed and Vignoles Ltd
Original Assignee
Evershed and Vignoles 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 Evershed and Vignoles Ltd filed Critical Evershed and Vignoles Ltd
Priority to GB2073052A priority Critical patent/GB723826A/en
Publication of GB723826A publication Critical patent/GB723826A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B11/00—Automatic controllers
    • G05B11/01—Automatic controllers electric
    • G05B11/012—Automatic controllers electric details of the transmission means
    • G05B11/013—Automatic controllers electric details of the transmission means using discharge tubes

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Paper (AREA)
  • Feedback Control In General (AREA)

Abstract

723,826. Automatic control systems. EVERSHED & VIGNOLES, Ltd. Aug. 7, 1953 [Aug. 18, 1952], No. 20730/52. Drawings to Specification. Class 38 (4). In an automatic electric-control system a constant current reference source comprises a potentiometer across a neon tube. The invention is described with reference to the liquidlevel control system of Specification 704,885 wherein a current proportional to the liquid level is compared in a two-coil galvanometerrelay with a constant reference current which was previously provided by an automatic regulating system comprising a galvanometer relay in the cathode circuit of a valve retroacting on photo-cells in the grid circuit. Specification 688,464 also is referred to.
GB2073052A 1952-08-18 1952-08-18 Improvements relating to electrical controlling apparatus Expired GB723826A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2073052A GB723826A (en) 1952-08-18 1952-08-18 Improvements relating to electrical controlling apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2073052A GB723826A (en) 1952-08-18 1952-08-18 Improvements relating to electrical controlling apparatus

Publications (1)

Publication Number Publication Date
GB723826A true GB723826A (en) 1955-02-09

Family

ID=10150692

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2073052A Expired GB723826A (en) 1952-08-18 1952-08-18 Improvements relating to electrical controlling apparatus

Country Status (1)

Country Link
GB (1) GB723826A (en)

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