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GB827860A - Improvements in or relating to electromechanical transducer systems - Google Patents

Improvements in or relating to electromechanical transducer systems

Info

Publication number
GB827860A
GB827860A GB9948/56A GB994856A GB827860A GB 827860 A GB827860 A GB 827860A GB 9948/56 A GB9948/56 A GB 9948/56A GB 994856 A GB994856 A GB 994856A GB 827860 A GB827860 A GB 827860A
Authority
GB
United Kingdom
Prior art keywords
fork
terminals
turn
march
coils
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
GB9948/56A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB827860A publication Critical patent/GB827860A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/08—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically
    • G04C3/10—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by electromagnetic means
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/97—Switches controlled by moving an element forming part of the switch using a magnetic movable element
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/97—Switches controlled by moving an element forming part of the switch using a magnetic movable element
    • H03K2017/9706—Inductive element

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

827,860. Electric rate-of-turn indicators; stylus arms and mountings. McSHAN, C. H. March 29, 1956 [March 31, 1955], No. 9948/56. Classes 40 (1) and 40 (2). [Also in Groups XVIII, XXXV, XXXIX and XL (c)] A turn-indicator comprises a tuning-fork 116 sustained by a tapped coil 130 wound on a core 118 and energized by a transistor amplifier 137, as shown in Figs. 9, 10 (see Groups XXXV and XL (c)). Signal generated by the displacement of the flux by the motion of the fork over the poles of core 119 is picked up on coils 132, 133. A potentiometer 144 is adjusted so that normally no signal appears at terminals 146. When the device is subject to a rate of turn, the fork is distorted so that the balance is upset and a signal depending on the modulation of the fork frequency appears at terminals 146, while the actual frequency appears at terminals 147. A gramophone pick-up arm 154, shown in Figs. 11, 13, has a soft iron armature 159 actuated by stylus 160 so as to induce currents in coils 164, 165 wound on stator poles 162. The arm 154 is non-magnetic, e.g. of phosphor bronze, and may carry a plastic damping element 158.
GB9948/56A 1955-03-31 1956-03-29 Improvements in or relating to electromechanical transducer systems Expired GB827860A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US827860XA 1955-03-31 1955-03-31

Publications (1)

Publication Number Publication Date
GB827860A true GB827860A (en) 1960-02-10

Family

ID=22173439

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9948/56A Expired GB827860A (en) 1955-03-31 1956-03-29 Improvements in or relating to electromechanical transducer systems

Country Status (1)

Country Link
GB (1) GB827860A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2158579A (en) * 1984-01-23 1985-11-13 Piezoelectric Technology Inves Angular rate sensor system
US4654663A (en) * 1981-11-16 1987-03-31 Piezoelectric Technology Investors, Ltd. Angular rate sensor system
GB2202699A (en) * 1987-02-20 1988-09-28 Seikosha Kk Pendulum driving circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4654663A (en) * 1981-11-16 1987-03-31 Piezoelectric Technology Investors, Ltd. Angular rate sensor system
GB2158579A (en) * 1984-01-23 1985-11-13 Piezoelectric Technology Inves Angular rate sensor system
GB2202699A (en) * 1987-02-20 1988-09-28 Seikosha Kk Pendulum driving circuit
GB2202699B (en) * 1987-02-20 1991-04-03 Seikosha Kk Electromagnetic driving circuit

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