JPS57100305A - Method for generating ultrasonic wave signal - Google Patents

Method for generating ultrasonic wave signal

Info

Publication number
JPS57100305A
JPS57100305A JP17523880A JP17523880A JPS57100305A JP S57100305 A JPS57100305 A JP S57100305A JP 17523880 A JP17523880 A JP 17523880A JP 17523880 A JP17523880 A JP 17523880A JP S57100305 A JPS57100305 A JP S57100305A
Authority
JP
Japan
Prior art keywords
coil
columnar body
ultrasonic wave
metallic columnar
outer side
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
JP17523880A
Other languages
Japanese (ja)
Inventor
Akira Koshida
Seiichi Motooka
Masakatsu Ogaki
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.)
NIPPON DORO KODAN
Oki Electric Industry Co Ltd
Original Assignee
NIPPON DORO KODAN
Oki Electric Industry 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 NIPPON DORO KODAN, Oki Electric Industry Co Ltd filed Critical NIPPON DORO KODAN
Priority to JP17523880A priority Critical patent/JPS57100305A/en
Publication of JPS57100305A publication Critical patent/JPS57100305A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K15/00—Acoustics not otherwise provided for
    • G10K15/04—Sound-producing devices

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

PURPOSE:To generate ultrasonic wave signals of large amplitudes and a uniform distribution directly in a metallic columnar body by flowing electric current instantaneously to the coil made of an insulated covered conductor wound on the outer side of said body. CONSTITUTION:A coil is formed by winding an insulated covered conductor on the outer side of a metallic columnar body of a cylinder or bar shape and electric current is flowed instantaneously to this coil. The metallic columnar body is deformed in a radial direction by the effect of the flux generated at that time, whereby ultrasonic wave signals are generated. For example, an insulated and covered conductor is wound on the outer side of a metallic columnar body 1 to form a coil 2. Both ends of such coil are connected via a switch 3 to a capacitor 4. On the other hand, an electric power source 5 is connected to a capacitor 4 via a rectifier 6 to charge the same. When electric current is flowed to the coil by closing the switch 3, the effect of the flux generated at that time forces the metallic columnar body to be deformed in a radial direction by magnetic force if it is a ferromagnetic material and by the effect of eddy current if it is a nonmagnetic material, thereby generating ultrasonic wave signals.
JP17523880A 1980-12-13 1980-12-13 Method for generating ultrasonic wave signal Pending JPS57100305A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17523880A JPS57100305A (en) 1980-12-13 1980-12-13 Method for generating ultrasonic wave signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17523880A JPS57100305A (en) 1980-12-13 1980-12-13 Method for generating ultrasonic wave signal

Publications (1)

Publication Number Publication Date
JPS57100305A true JPS57100305A (en) 1982-06-22

Family

ID=15992668

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17523880A Pending JPS57100305A (en) 1980-12-13 1980-12-13 Method for generating ultrasonic wave signal

Country Status (1)

Country Link
JP (1) JPS57100305A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4859843B2 (en) * 2004-12-16 2012-01-25 フラウンホッファー−ゲゼルシャフト ツァ フェルダールング デァ アンゲヴァンテン フォアシュンク エー．ファオ Circuit and method for generating current pulses in a waveguide

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4859843B2 (en) * 2004-12-16 2012-01-25 フラウンホッファー−ゲゼルシャフト ツァ フェルダールング デァ アンゲヴァンテン フォアシュンク エー．ファオ Circuit and method for generating current pulses in a waveguide

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