GB785212A - Improvements relating to electromagnetic field-controlling devices - Google Patents

Improvements relating to electromagnetic field-controlling devices

Info

Publication number
GB785212A
GB785212A GB542754A GB542754A GB785212A GB 785212 A GB785212 A GB 785212A GB 542754 A GB542754 A GB 542754A GB 542754 A GB542754 A GB 542754A GB 785212 A GB785212 A GB 785212A
Authority
GB
United Kingdom
Prior art keywords
alternating current
coil
magnetic circuits
magnetic
reluctances
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
GB542754A
Inventor
Cyril Charles Jones
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.)
Ferranti International PLC
Original Assignee
Ferranti PLC
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 Ferranti PLC filed Critical Ferranti PLC
Priority to GB542754A priority Critical patent/GB785212A/en
Publication of GB785212A publication Critical patent/GB785212A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • G01P15/11—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by inductive pick-up

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

785,212. Transformers and inductors. FERRANTI, Ltd. May 18, 1955, No. 5427/54. Class 38 (2). [Also in Group XXXVIII] A variable inductor for use as an accelerometer has a laminated magnetic core 10, 13 comprising two magnetic circuits having a common air-gap 16, means for setting up an alternating current field in each of the magnetic circuits, a short-circuited coil 19 weighted so as to have substantial mechanical inertia and supported so that only a part thereof moves across the magnetic field in the common air-gap 16 against the action of a spring 22 to vary the reluctances of the two magnetic circuits, response means-such as coils 18-being provided for deriving a signal dependent on the relative values of the reluctances. The alternating current field may be set up by supplying alternating current to the primary winding 17 or by supplying alternating current to the windings 18 connected in a bridge circuit with fixed resistors, the winding 17 being dispensed with. Movement of the coil 19 in one direction due to the acceleration of the vehicle carrying the device causes an output to be developed by the coils 18 oppositely connected in series which output is indicated in magnitude and sense by an instrument 24. Retardation is indicated when the coil 19 moves in the opposite direction.
GB542754A 1955-05-18 1955-05-18 Improvements relating to electromagnetic field-controlling devices Expired GB785212A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB542754A GB785212A (en) 1955-05-18 1955-05-18 Improvements relating to electromagnetic field-controlling devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB542754A GB785212A (en) 1955-05-18 1955-05-18 Improvements relating to electromagnetic field-controlling devices

Publications (1)

Publication Number Publication Date
GB785212A true GB785212A (en) 1957-10-23

Family

ID=9795984

Family Applications (1)

Application Number Title Priority Date Filing Date
GB542754A Expired GB785212A (en) 1955-05-18 1955-05-18 Improvements relating to electromagnetic field-controlling devices

Country Status (1)

Country Link
GB (1) GB785212A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4512193A (en) * 1981-11-25 1985-04-23 Kabushiki Kaisha Tokyo Keiki Accelerometer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4512193A (en) * 1981-11-25 1985-04-23 Kabushiki Kaisha Tokyo Keiki Accelerometer

Similar Documents

Publication Publication Date Title
GB706736A (en) Improvements in or relating to electrical storage devices
DE3889658D1 (en) TRANSFORMER.
GB785212A (en) Improvements relating to electromagnetic field-controlling devices
GB1258616A (en)
GB695920A (en) Fault protective arrangement for direct current systems
DK334181A (en) ERROR CREW PROTECTION SWITCH RESPONSE TO ERROR CREW WITH CURRENT CURRENT COMPONENTS
US3935471A (en) Current limiting power supply
GB750109A (en) Improvements in or relating to closed magnetic cores for controllable saturable inductors, magnetic amplifiers or like controllable devices
US1835969A (en) Transformer
SU123604A1 (en) Device for controlling the operation of an asynchronous motor
GB844399A (en) Inductance coil
SU555544A1 (en) Accumulative pulse counter
GB1072974A (en) Improvements in or relating to electric circuit arrangements including inductive elements
GB887279A (en) Improvements in or relating to integrating circuit arrangements including inductances having ferromagnetic cores
GB526344A (en) Improvements in or relating to voltage regulators for variable speed dynamos
SU99645A1 (en) High Speed Magnetic Relay
GB939590A (en) Transducer for converting position into an electrical signal
GB766656A (en) Improvements in and relating to positioning devices
GB855018A (en) Improvements in or relating to displacement transducers
GB746032A (en) Improvements in or relating to contact devices for adjustable inductors
GB764367A (en) Improved electro-motive traction control system
GB599958A (en) Improvements in vibrating electrical inverters
GB660265A (en) Voltage regulator for motor vehicles
GB599428A (en) Improvements relating to apparatus and systems responsive to the intensity and direction of a magnetic field
GB571991A (en) Improvements relating to dynamo regulators