JPS56102199A - Ultrasonic wave transducer of piezoelectric macromolecule - Google Patents

Ultrasonic wave transducer of piezoelectric macromolecule

Info

Publication number
JPS56102199A
JPS56102199A JP503380A JP503380A JPS56102199A JP S56102199 A JPS56102199 A JP S56102199A JP 503380 A JP503380 A JP 503380A JP 503380 A JP503380 A JP 503380A JP S56102199 A JPS56102199 A JP S56102199A
Authority
JP
Japan
Prior art keywords
trd
resistance
ultrasonic wave
transformer
impedance
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
JP503380A
Other languages
Japanese (ja)
Inventor
Nobuo Hashimoto
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.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
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 Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP503380A priority Critical patent/JPS56102199A/en
Publication of JPS56102199A publication Critical patent/JPS56102199A/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
    • H04R17/005—Piezoelectric transducers; Electrostrictive transducers using a piezoelectric polymer

Abstract

PURPOSE:To enable to supply maximum power to ultrasonic wave transducer TRD by connecting a series circuit consisting of resistance and inducatance to TRD in parallel and attaching an impedance matching transformer to TRD. CONSTITUTION:In case of ultrasonic wave TRD consisting of electroacoustic transducer element 14 including a macromolecule piezoelectric film, series circuit 13 consisting of inductance L1 and resistance R1 is connected to element 14 in parallel and impedance matching transformer 12 is connected between connector 11 and element 14. When the resistance and capacity of element 14 at the operational center frequency decided by the constitution of element 14 are denoted R and C respectively and then R1 and L1 are selected so as to be R=R1=(L1/C)<1/2>= input impedance, the impedance of load seen from the secondary coil of transformer 12 becomes pure resistance R. If the winding ratio of transformer 12 is decided so as to match the cable connected to connector 11, characteristic impedance including power source and resistance, maximum power can be supplied to TRD from power source and a reflected signal converted electrically with TRD can be transferred without distortion.
JP503380A 1980-01-19 1980-01-19 Ultrasonic wave transducer of piezoelectric macromolecule Pending JPS56102199A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP503380A JPS56102199A (en) 1980-01-19 1980-01-19 Ultrasonic wave transducer of piezoelectric macromolecule

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP503380A JPS56102199A (en) 1980-01-19 1980-01-19 Ultrasonic wave transducer of piezoelectric macromolecule

Publications (1)

Publication Number Publication Date
JPS56102199A true JPS56102199A (en) 1981-08-15

Family

ID=11600150

Family Applications (1)

Application Number Title Priority Date Filing Date
JP503380A Pending JPS56102199A (en) 1980-01-19 1980-01-19 Ultrasonic wave transducer of piezoelectric macromolecule

Country Status (1)

Country Link
JP (1) JPS56102199A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014212413A (en) * 2013-04-18 2014-11-13 東レエンジニアリング株式会社 Ultrasonic transducer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014212413A (en) * 2013-04-18 2014-11-13 東レエンジニアリング株式会社 Ultrasonic transducer

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