JPS6411500A - Highly efficient speaker - Google Patents

Highly efficient speaker

Info

Publication number
JPS6411500A
JPS6411500A JP16719987A JP16719987A JPS6411500A JP S6411500 A JPS6411500 A JP S6411500A JP 16719987 A JP16719987 A JP 16719987A JP 16719987 A JP16719987 A JP 16719987A JP S6411500 A JPS6411500 A JP S6411500A
Authority
JP
Japan
Prior art keywords
diaphragm
film
speaker
superconductive
magnet
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
JP16719987A
Other languages
Japanese (ja)
Inventor
Hirotoshi Niiguchi
Tetsuji Iwata
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP16719987A priority Critical patent/JPS6411500A/en
Publication of JPS6411500A publication Critical patent/JPS6411500A/en
Pending legal-status Critical Current

Links

Landscapes

  • Diaphragms For Electromechanical Transducers (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

PURPOSE:To improve transforming efficiency and to attain a high efficiency with a simple structure by forming a superconductive material on one face of a diaphragm, placing an electromagnet with a constant distance separated from the diaphragm and transmitting the strength of a magnetic field directly to the diaphragm. CONSTITUTION:In a speaker consisting of a superconductive film 4, the planar diaphragm 5 and the electromagnet 6, the film 4 is formed of the yttrium superconductive film material on the surface of the diaphragm 5 by using a sputtering method or the like and formed at least one face of the diaphragm 5. At the time of driving the speaker, initially, the film 4 is cooled by a liquid nitrogen, a diamagnetism is generated in the vicinity of the temperature of the liquid nitrogen by using the magnet 6 and the diaphragm 5 of the speaker is vertically driven according to the strength of the magnetic field of the magnet 6. Thereby, the superconductive material forming the film on the diaphragm 5 is a strong diamagnetic material to improve the transforming efficiency by using the Meissner effect of a phenomenon repulsive from the magnet to a maximum degree and attain the high efficiency with the simple structure.
JP16719987A 1987-07-03 1987-07-03 Highly efficient speaker Pending JPS6411500A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16719987A JPS6411500A (en) 1987-07-03 1987-07-03 Highly efficient speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16719987A JPS6411500A (en) 1987-07-03 1987-07-03 Highly efficient speaker

Publications (1)

Publication Number Publication Date
JPS6411500A true JPS6411500A (en) 1989-01-17

Family

ID=15845262

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16719987A Pending JPS6411500A (en) 1987-07-03 1987-07-03 Highly efficient speaker

Country Status (1)

Country Link
JP (1) JPS6411500A (en)

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