JPH0230640B2 - - Google Patents

Info

Publication number
JPH0230640B2
JPH0230640B2 JP56157457A JP15745781A JPH0230640B2 JP H0230640 B2 JPH0230640 B2 JP H0230640B2 JP 56157457 A JP56157457 A JP 56157457A JP 15745781 A JP15745781 A JP 15745781A JP H0230640 B2 JPH0230640 B2 JP H0230640B2
Authority
JP
Japan
Prior art keywords
balanced
calibration
preamplifier
electrode
piezoelectric vibrator
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 - Lifetime
Application number
JP56157457A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5859700A (ja
Inventor
Kyoshi Koyano
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 JP56157457A priority Critical patent/JPS5859700A/ja
Publication of JPS5859700A publication Critical patent/JPS5859700A/ja
Publication of JPH0230640B2 publication Critical patent/JPH0230640B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B11/00—Transmission systems employing sonic, ultrasonic or infrasonic waves

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
JP56157457A 1981-10-05 1981-10-05 水中受波器 Granted JPS5859700A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56157457A JPS5859700A (ja) 1981-10-05 1981-10-05 水中受波器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56157457A JPS5859700A (ja) 1981-10-05 1981-10-05 水中受波器

Publications (2)

Publication Number Publication Date
JPS5859700A JPS5859700A (ja) 1983-04-08
JPH0230640B2 true JPH0230640B2 (enExample) 1990-07-09

Family

ID=15650074

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56157457A Granted JPS5859700A (ja) 1981-10-05 1981-10-05 水中受波器

Country Status (1)

Country Link
JP (1) JPS5859700A (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5040706B2 (ja) * 2008-02-13 2012-10-03 沖電気工業株式会社 音響測定用受波器
US7656750B2 (en) * 2008-02-26 2010-02-02 Semiconductor Components Industries, Llc Echo detection

Also Published As

Publication number Publication date
JPS5859700A (ja) 1983-04-08

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