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JPS57147288A - Twisting mode piezoelectric ceramic transformer - Google Patents

Twisting mode piezoelectric ceramic transformer

Info

Publication number
JPS57147288A
JPS57147288A JP56032065A JP3206581A JPS57147288A JP S57147288 A JPS57147288 A JP S57147288A JP 56032065 A JP56032065 A JP 56032065A JP 3206581 A JP3206581 A JP 3206581A JP S57147288 A JPS57147288 A JP S57147288A
Authority
JP
Japan
Prior art keywords
piezoelectric ceramic
plates
vibration
twisting
polarizing
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.)
Granted
Application number
JP56032065A
Other languages
Japanese (ja)
Other versions
JPH02869B2 (en
Inventor
Takeshi Inoue
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP56032065A priority Critical patent/JPS57147288A/en
Publication of JPS57147288A publication Critical patent/JPS57147288A/en
Publication of JPH02869B2 publication Critical patent/JPH02869B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/40—Piezoelectric or electrostrictive devices with electrical input and electrical output, e.g. functioning as transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ac-Ac Conversion (AREA)

Abstract

PURPOSE:To reduce the size of a transformer by utilizing twisting vibration by bonding two piezoelectric ceramic plates longitudinally polarized at the sides parallel to the polarizing direction so that the polarizing directions become oppositely against each other. CONSTITUTION:Longitudinally polarized piezoelectric porcelain plates 20, 21 are bonded at the sides parallel to the polarizing direction so that the polarizing directions become oppositely to each other. Drive electrodes 22, 23' and output electrodes 24, 24' are formed on the upper and lower surfaces of the respective plates 20, 21. When they are excited from the drive terminals 25, 25', opposite slipping vibrations are excited in the plates 20, 21 due to the reverse polarizing directions, and since they are rigidly bonded with an adhesive 22, the slipping vibration is converted into twisting vibtation. Since the elastic stiffness of the twisting vibration is smaller than that of the longitudinal vibration, a small size piezoelectric ceramic transformer can be obtained.
JP56032065A 1981-03-06 1981-03-06 Twisting mode piezoelectric ceramic transformer Granted JPS57147288A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56032065A JPS57147288A (en) 1981-03-06 1981-03-06 Twisting mode piezoelectric ceramic transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56032065A JPS57147288A (en) 1981-03-06 1981-03-06 Twisting mode piezoelectric ceramic transformer

Publications (2)

Publication Number Publication Date
JPS57147288A true JPS57147288A (en) 1982-09-11
JPH02869B2 JPH02869B2 (en) 1990-01-09

Family

ID=12348473

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56032065A Granted JPS57147288A (en) 1981-03-06 1981-03-06 Twisting mode piezoelectric ceramic transformer

Country Status (1)

Country Link
JP (1) JPS57147288A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0477002A2 (en) * 1990-09-18 1992-03-25 Fujitsu Limited Piezoelectric transformer
US5371430A (en) * 1991-02-12 1994-12-06 Fujitsu Limited Piezoelectric transformer producing an output A.C. voltage with reduced distortion
US5424602A (en) * 1991-02-12 1995-06-13 Fujitsu Limited Piezoelectric transformer showing a reduced input impedance and step-up/step-down operation for a wide range of load resistance

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0477002A2 (en) * 1990-09-18 1992-03-25 Fujitsu Limited Piezoelectric transformer
US5229680A (en) * 1990-09-18 1993-07-20 Fujitsu Limited Piezoelectric transformer using single crystal of linbo3
US5371430A (en) * 1991-02-12 1994-12-06 Fujitsu Limited Piezoelectric transformer producing an output A.C. voltage with reduced distortion
US5424602A (en) * 1991-02-12 1995-06-13 Fujitsu Limited Piezoelectric transformer showing a reduced input impedance and step-up/step-down operation for a wide range of load resistance

Also Published As

Publication number Publication date
JPH02869B2 (en) 1990-01-09

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