GB682534A - Improvements in or relating to electrical tachometers - Google Patents

Improvements in or relating to electrical tachometers

Info

Publication number
GB682534A
GB682534A GB663850A GB663850A GB682534A GB 682534 A GB682534 A GB 682534A GB 663850 A GB663850 A GB 663850A GB 663850 A GB663850 A GB 663850A GB 682534 A GB682534 A GB 682534A
Authority
GB
United Kingdom
Prior art keywords
measuring device
rectifier
coil
voltage
fed via
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
GB663850A
Inventor
Henry Joseph Lovegrove
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.)
Sangamo Weston Ltd
Atos Origin IT Services Inc
Original Assignee
Sangamo Weston Ltd
Sangamo Weston Inc
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 Sangamo Weston Ltd, Sangamo Weston Inc filed Critical Sangamo Weston Ltd
Priority to GB663850A priority Critical patent/GB682534A/en
Publication of GB682534A publication Critical patent/GB682534A/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
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P1/00—Details of instruments
    • G01P1/07—Indicating devices, e.g. for remote indication
    • G01P1/08—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/46—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring amplitude of generated current or voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
  • Synchronous Machinery (AREA)

Abstract

682,534. Electric speedometers. SANGAMO WESTON, Ltd. Jan. 18, 1951 [March 16, 1950], No. 6638/50. Class 40 (i). A tachometer for measuring the speed of rotation of a shaft 11 comprises a single-phase generator 10 whose output is fed to a voltage measuring device 13, and to a frequency measuring device 14, whereby low and high speeds may be accurately measured by the same instrument. The voltage measuring device 13 may be made inoperative at higher outputs by suitably designing the inductance of the generator, or by the use of a cut-out 20 disconnecting the meter 13 at a predetermined value of output voltage. The frequency measuring device consists of a ratiometer type instrument with one coil 14 fed via a condenser 16 and a rectifier 17, and the other coil 15 fed via a resistance 18 and a rectifier 19.
GB663850A 1950-03-16 1950-03-16 Improvements in or relating to electrical tachometers Expired GB682534A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB663850A GB682534A (en) 1950-03-16 1950-03-16 Improvements in or relating to electrical tachometers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB663850A GB682534A (en) 1950-03-16 1950-03-16 Improvements in or relating to electrical tachometers

Publications (1)

Publication Number Publication Date
GB682534A true GB682534A (en) 1952-11-12

Family

ID=9818100

Family Applications (1)

Application Number Title Priority Date Filing Date
GB663850A Expired GB682534A (en) 1950-03-16 1950-03-16 Improvements in or relating to electrical tachometers

Country Status (1)

Country Link
GB (1) GB682534A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006005387A1 (en) * 2004-07-08 2006-01-19 Audi Ag Engine speed indicator for a motor vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006005387A1 (en) * 2004-07-08 2006-01-19 Audi Ag Engine speed indicator for a motor vehicle

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