GB840815A - Improvements in or relating to electro-mechanical resonators - Google Patents

Improvements in or relating to electro-mechanical resonators

Info

Publication number
GB840815A
GB840815A GB745157A GB745157A GB840815A GB 840815 A GB840815 A GB 840815A GB 745157 A GB745157 A GB 745157A GB 745157 A GB745157 A GB 745157A GB 840815 A GB840815 A GB 840815A
Authority
GB
United Kingdom
Prior art keywords
bar
metal
section
electric
piezo
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
GB745157A
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 GB745157A priority Critical patent/GB840815A/en
Publication of GB840815A publication Critical patent/GB840815A/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
    • H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
    • H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

840,815. Electromechanical resonators. GENERAL ELECTRIC CO. Ltd., DREDGE, C. J., and RICHES, E. E. March 6, 1958 [March 6, 1957], No. 7451/57. Class 40(8). An electromechanical resonator, e.g. for use in a filter network, comprises a composite elongated structure formed partially of piezoelectric material and partially of metal, the piezo-electric portion lying between two metal portions, which act as electrodes the nodal support contacting one of said metal portions only. A part 2 of a bar resonator 1 of uniform square cross-section is formed from a solid solution of the titanates of barium, lead and calcium, and the two metal end members 3 and 4 of nickelchromium-iron-titanium alloy constitute electrodes for the piezo-electric section 2 and form at least nine-tenths of the length of bar 1. Said bar is supported in a nodal plane from a metal structure 5 by means of screws 6, 7 and 8 which engage grooves 9 and 10 cut in an end portion of the bar. The cross-section of the bar in other embodiments is not necessarily square or uniform and may be circular (Fig. 2, not shown). Specification 840,816 is referred to.
GB745157A 1957-03-06 1957-03-06 Improvements in or relating to electro-mechanical resonators Expired GB840815A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB745157A GB840815A (en) 1957-03-06 1957-03-06 Improvements in or relating to electro-mechanical resonators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB745157A GB840815A (en) 1957-03-06 1957-03-06 Improvements in or relating to electro-mechanical resonators

Publications (1)

Publication Number Publication Date
GB840815A true GB840815A (en) 1960-07-13

Family

ID=9833327

Family Applications (1)

Application Number Title Priority Date Filing Date
GB745157A Expired GB840815A (en) 1957-03-06 1957-03-06 Improvements in or relating to electro-mechanical resonators

Country Status (1)

Country Link
GB (1) GB840815A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1257995B (en) * 1964-07-18 1968-01-04 Telefunken Patent Bridge filter using electromechanical resonators as bridge members
DE1261177B (en) * 1964-08-20 1968-02-15 Telefunken Patent Electromechanical converter
DE1267352B (en) * 1961-09-29 1968-05-02 Siemens Ag Electromechanical filter
DE1277463B (en) * 1963-05-21 1968-09-12 Siemens Ag Mechanical oscillator with electrostrictive excitation

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1267352B (en) * 1961-09-29 1968-05-02 Siemens Ag Electromechanical filter
DE1277463B (en) * 1963-05-21 1968-09-12 Siemens Ag Mechanical oscillator with electrostrictive excitation
DE1257995B (en) * 1964-07-18 1968-01-04 Telefunken Patent Bridge filter using electromechanical resonators as bridge members
DE1261177B (en) * 1964-08-20 1968-02-15 Telefunken Patent Electromechanical converter

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