GB926852A - Improvements relating to electrical indicating apparatus - Google Patents

Improvements relating to electrical indicating apparatus

Info

Publication number
GB926852A
GB926852A GB3566458A GB3566458A GB926852A GB 926852 A GB926852 A GB 926852A GB 3566458 A GB3566458 A GB 3566458A GB 3566458 A GB3566458 A GB 3566458A GB 926852 A GB926852 A GB 926852A
Authority
GB
United Kingdom
Prior art keywords
armature
relay
coil
nov
solenoid
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
GB3566458A
Inventor
Ernest James Bateman
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.)
English Electric Co Ltd
Original Assignee
English Electric 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 English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB3566458A priority Critical patent/GB926852A/en
Publication of GB926852A publication Critical patent/GB926852A/en
Expired legal-status Critical Current

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Landscapes

  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

926,852. Operating single-indication receivers. ENGLISH ELECTRIC CO. Ltd. Nov. 2, 1959 [Nov. 6, 1958], No. 35664/58. Class 118. [Also in Group XXXVI] The position of a ferromagnetic member moved by a D.C.-operated coil is determined by including the coil in an A.C. bridge circuit and detecting the change in coil impedance as the member moves into it. As shown, the position of the armature 11 controlled by a solenoid 12 energized from a D.C. supply 13 is detected by the variation of balance of the A.C. bridge circuit 17. The unbalance voltage is amplified by a magnetic amplifier 23, arranged to energize lamp-operating relay 24 when the armature is in the position shown and to energize relay 25 when the armature is within the solenoid 12. A third relay may be provided to indicate faulty operation of the system.
GB3566458A 1958-11-06 1958-11-06 Improvements relating to electrical indicating apparatus Expired GB926852A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3566458A GB926852A (en) 1958-11-06 1958-11-06 Improvements relating to electrical indicating apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3566458A GB926852A (en) 1958-11-06 1958-11-06 Improvements relating to electrical indicating apparatus

Publications (1)

Publication Number Publication Date
GB926852A true GB926852A (en) 1963-05-22

Family

ID=10380215

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3566458A Expired GB926852A (en) 1958-11-06 1958-11-06 Improvements relating to electrical indicating apparatus

Country Status (1)

Country Link
GB (1) GB926852A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2448777A1 (en) * 1979-02-09 1980-09-05 Lucas Industries Ltd IC engine fuel pump armature monitoring circuit - includes oscillator connected to armature coil avoiding use of separate indicating device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2448777A1 (en) * 1979-02-09 1980-09-05 Lucas Industries Ltd IC engine fuel pump armature monitoring circuit - includes oscillator connected to armature coil avoiding use of separate indicating device

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