JPS5377491A - Small-size electromagnetic type electroacoustic transducer - Google Patents

Small-size electromagnetic type electroacoustic transducer

Info

Publication number
JPS5377491A
JPS5377491A JP15356176A JP15356176A JPS5377491A JP S5377491 A JPS5377491 A JP S5377491A JP 15356176 A JP15356176 A JP 15356176A JP 15356176 A JP15356176 A JP 15356176A JP S5377491 A JPS5377491 A JP S5377491A
Authority
JP
Japan
Prior art keywords
small
electroacoustic transducer
electromagnetic type
type electroacoustic
size electromagnetic
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.)
Granted
Application number
JP15356176A
Other languages
Japanese (ja)
Other versions
JPS5714640B2 (en
Inventor
Kimihiro Nomura
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP15356176A priority Critical patent/JPS5377491A/en
Publication of JPS5377491A publication Critical patent/JPS5377491A/en
Publication of JPS5714640B2 publication Critical patent/JPS5714640B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To improve use effects to a wrist watch, etc., with improving frequency characteristic and making a magnet small-size and reducing power consumption by providing a yoke between moving iron and the magnet.
COPYRIGHT: (C)1978,JPO&Japio
JP15356176A 1976-12-21 1976-12-21 Small-size electromagnetic type electroacoustic transducer Granted JPS5377491A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15356176A JPS5377491A (en) 1976-12-21 1976-12-21 Small-size electromagnetic type electroacoustic transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15356176A JPS5377491A (en) 1976-12-21 1976-12-21 Small-size electromagnetic type electroacoustic transducer

Publications (2)

Publication Number Publication Date
JPS5377491A true JPS5377491A (en) 1978-07-08
JPS5714640B2 JPS5714640B2 (en) 1982-03-25

Family

ID=15565177

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15356176A Granted JPS5377491A (en) 1976-12-21 1976-12-21 Small-size electromagnetic type electroacoustic transducer

Country Status (1)

Country Link
JP (1) JPS5377491A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5859699A (en) * 1981-10-03 1983-04-08 Matsushita Electric Ind Co Ltd Electromagnetic electroacoustic transducer
US6671383B2 (en) 1998-11-04 2003-12-30 Matsushita Electric Industrial Co., Ltd. Electromagnetic transducer and portable communication device
US10450698B2 (en) 2015-06-11 2019-10-22 Idemitsu Kosan Co., Ltd. Method for producing cellulose-containing solid material and method for producing glucose

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4928921U (en) * 1972-06-14 1974-03-12

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4928921U (en) * 1972-06-14 1974-03-12

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5859699A (en) * 1981-10-03 1983-04-08 Matsushita Electric Ind Co Ltd Electromagnetic electroacoustic transducer
US6671383B2 (en) 1998-11-04 2003-12-30 Matsushita Electric Industrial Co., Ltd. Electromagnetic transducer and portable communication device
US10450698B2 (en) 2015-06-11 2019-10-22 Idemitsu Kosan Co., Ltd. Method for producing cellulose-containing solid material and method for producing glucose

Also Published As

Publication number Publication date
JPS5714640B2 (en) 1982-03-25

Similar Documents

Publication Publication Date Title
JPS51126751A (en) Magnetron
JPS5330296A (en) Electro-acoustic transducer
JPS5277718A (en) Electromagnetic type electroacoustic transducer
JPS5441408A (en) Transducer for electronic watch
JPS5377491A (en) Small-size electromagnetic type electroacoustic transducer
JPS5330247A (en) Small-size electronic unit
JPS5216966A (en) Magnetron
JPS52128115A (en) Magnetic head and its production
JPS5364074A (en) Wrist watch with electronic buzzer
JPS52112305A (en) Electromagnetic pick-up
JPS5296922A (en) Permanent magnet material
JPS5347811A (en) Magnetic head
JPS5258959A (en) Wristwatch with built-in speaker
JPS5421779A (en) Miniature electronic watch
JPS5442108A (en) Magnetic recorder-reproducer
JPS53807A (en) Converter for electric watch
JPS5434098A (en) Surface working of ferrite
JPS5240026A (en) High-speed printing equipment
JPS542078A (en) Magnetoelectric converter
JPS535670A (en) Alarm electronic watch
JPS5428070A (en) Magnetic filter device
JPS5346263A (en) Magnetron
JPS52111692A (en) Permanent magnet material
JPS52113192A (en) Electromagnetic type converter
JPS52140942A (en) High-frequency heating unit