GB713618A - Piezoelectric elements for electromechanical transducers - Google Patents

Piezoelectric elements for electromechanical transducers

Info

Publication number
GB713618A
GB713618A GB27669/52A GB2766952A GB713618A GB 713618 A GB713618 A GB 713618A GB 27669/52 A GB27669/52 A GB 27669/52A GB 2766952 A GB2766952 A GB 2766952A GB 713618 A GB713618 A GB 713618A
Authority
GB
United Kingdom
Prior art keywords
unit
electric
piezo
layers
layer
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
GB27669/52A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables 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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB713618A publication Critical patent/GB713618A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00Piezoelectric transducers; Electrostrictive transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

713,618. Piezo-electric crystals. STANDARD TELEPHONES & CABLES, Ltd. Nov. 3, 1952 [Nov. 3, 1951], No. 27669/52. Drawings to Specification. Class 40 (8) A piezo-electric unit is built up from a number of layers of piezo-electric material arranged about the neutral axis of the flexure of the unit, and the thickness of the layers or the electric intensity across them is so arranged that, when energizing voltage is applied to the unit, each layer is caused to bend by the same amount as a corresponding layer of the same dimensions, but forming part of a homogenous crystal element, would be bent if the homogenous layer was subjected to an equivalent mechanical stress. The layers may be formed of ammonium dihydrogen phosphate or Rochelle salt or one unit may be formed from several different piezoelectric materials. Units constructed as above can be arranged to have impedances which could not be obtained with homogenous crystal units.
GB27669/52A 1951-11-03 1952-11-03 Piezoelectric elements for electromechanical transducers Expired GB713618A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE713618X 1951-11-03

Publications (1)

Publication Number Publication Date
GB713618A true GB713618A (en) 1954-08-11

Family

ID=6624046

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27669/52A Expired GB713618A (en) 1951-11-03 1952-11-03 Piezoelectric elements for electromechanical transducers

Country Status (1)

Country Link
GB (1) GB713618A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5834879A (en) * 1996-01-11 1998-11-10 Wac Data Services Co., Ltd. Stacked piezoelectric actuator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5834879A (en) * 1996-01-11 1998-11-10 Wac Data Services Co., Ltd. Stacked piezoelectric actuator

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