GB574398A - Improvements in piezo-electric frequency-control devices - Google Patents

Improvements in piezo-electric frequency-control devices

Info

Publication number
GB574398A
GB574398A GB1298643A GB1298643A GB574398A GB 574398 A GB574398 A GB 574398A GB 1298643 A GB1298643 A GB 1298643A GB 1298643 A GB1298643 A GB 1298643A GB 574398 A GB574398 A GB 574398A
Authority
GB
United Kingdom
Prior art keywords
piezo
control devices
electric
electrode
crystal
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
GB1298643A
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.)
General Electric Co PLC
Original Assignee
General Electric Co 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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB1298643A priority Critical patent/GB574398A/en
Priority to US528440A priority patent/US2395434A/en
Publication of GB574398A publication Critical patent/GB574398A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/05—Holders; Supports
    • H03H9/09—Elastic or damping supports

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

574,398. Piezo-electric crystals. GENERAL ELECTRIC CO., Ltd., and LEWER, S. K. Aug. 11, 1943, No. 12986. [Class 40 (v)] A piezo-electric element suitable for precise frequency control comprises a bevelled circular plate 1, for example AT or BT cut quartz, held by a ring 4 against a circular plate electrode 2. The upper electrode 3 is in the form of a. bar extending diametrically across the crystal and arranged for rotation on a journal 3<1> about an axis 5 perpendicular to the centre of the crystal. By rotating the electrode 3 a small frequency adjustment can be made, the maximum variation of frequency being covered by a rotation through 90 degrees.
GB1298643A 1943-08-11 1943-08-11 Improvements in piezo-electric frequency-control devices Expired GB574398A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1298643A GB574398A (en) 1943-08-11 1943-08-11 Improvements in piezo-electric frequency-control devices
US528440A US2395434A (en) 1943-08-11 1944-03-28 Piezoelectric crystals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1298643A GB574398A (en) 1943-08-11 1943-08-11 Improvements in piezo-electric frequency-control devices

Publications (1)

Publication Number Publication Date
GB574398A true GB574398A (en) 1946-01-03

Family

ID=10014725

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1298643A Expired GB574398A (en) 1943-08-11 1943-08-11 Improvements in piezo-electric frequency-control devices

Country Status (1)

Country Link
GB (1) GB574398A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106230400A (en) * 2016-08-29 2016-12-14 浙江晶电子科技有限公司 A kind of altofrequency cylindrulite

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106230400A (en) * 2016-08-29 2016-12-14 浙江晶电子科技有限公司 A kind of altofrequency cylindrulite

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