JPS55140399A - Cylindrical piezoelectric porcelain vibrator - Google Patents

Cylindrical piezoelectric porcelain vibrator

Info

Publication number
JPS55140399A
JPS55140399A JP4798179A JP4798179A JPS55140399A JP S55140399 A JPS55140399 A JP S55140399A JP 4798179 A JP4798179 A JP 4798179A JP 4798179 A JP4798179 A JP 4798179A JP S55140399 A JPS55140399 A JP S55140399A
Authority
JP
Japan
Prior art keywords
electrodes
outside
vibrator
divided
porcelain
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.)
Pending
Application number
JP4798179A
Other languages
Japanese (ja)
Inventor
Kiyoshi Kotanino
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP4798179A priority Critical patent/JPS55140399A/en
Publication of JPS55140399A publication Critical patent/JPS55140399A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

PURPOSE:To obtain a small-size and high-sensitivity cylindrical piezo-electric porcelain vibrator by arranging plural electrodes on inside and outside walls of the piezo-electric porcelain cylinder so that they may overlap one another and by dividing and applying a DC voltage between respective electrodes to polarize electrodes. CONSTITUTION:Narrow outside electrodes 11 and 15 divided in the vertical direction for the outside wall of piezoelectric porcelain cylinder 1 are arranged with mutual gap P, and these electrodes and wide outside electrode 13 are arranged with gap Q. For the inside wall, wide outside electrodes 12 and 14 divided in the vertical direction are arranged with mutual gap R so that they may overlap electrodes 11, 13 and 15. The voltage of DC power source E is divided by resistances R1-R4 and is applied to respective piezoelectric porcelain vibrators 1a, 1b, 1c and 1d. Since plural polarized piezoelectric porcelain elements are taken out from the polarizing circuit, receiving sensitivity 4 times as high as the conventional vibrator can be obtained.
JP4798179A 1979-04-20 1979-04-20 Cylindrical piezoelectric porcelain vibrator Pending JPS55140399A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4798179A JPS55140399A (en) 1979-04-20 1979-04-20 Cylindrical piezoelectric porcelain vibrator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4798179A JPS55140399A (en) 1979-04-20 1979-04-20 Cylindrical piezoelectric porcelain vibrator

Publications (1)

Publication Number Publication Date
JPS55140399A true JPS55140399A (en) 1980-11-01

Family

ID=12790483

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4798179A Pending JPS55140399A (en) 1979-04-20 1979-04-20 Cylindrical piezoelectric porcelain vibrator

Country Status (1)

Country Link
JP (1) JPS55140399A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5839200A (en) * 1981-09-01 1983-03-07 Nec Corp Transmitter-receiver

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5839200A (en) * 1981-09-01 1983-03-07 Nec Corp Transmitter-receiver
JPS6312438B2 (en) * 1981-09-01 1988-03-18 Nippon Electric Co

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