GB833737A - - Google Patents

Info

Publication number
GB833737A
GB833737A GB833737DA GB833737A GB 833737 A GB833737 A GB 833737A GB 833737D A GB833737D A GB 833737DA GB 833737 A GB833737 A GB 833737A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
magnet
insulating member
permanent magnet
coils
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.)
Active
Application number
Other languages
English (en)
Publication of GB833737A publication Critical patent/GB833737A/en
Active legal-status Critical Current

Links

Landscapes

  • Reciprocating Pumps (AREA)
  • Electromagnets (AREA)
GB833737D Active GB833737A (da)

Publications (1)

Publication Number Publication Date
GB833737A true GB833737A (da)

Family

ID=1752516

Family Applications (1)

Application Number Title Priority Date Filing Date
GB833737D Active GB833737A (da)

Country Status (1)

Country Link
GB (1) GB833737A (da)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4000381A (en) * 1975-05-23 1976-12-28 Shure Brothers Inc. Moving magnet transducer
US4237347A (en) * 1977-03-14 1980-12-02 Burundukov Valentin M Electrodynamic transducer with longitudinally moving magnet
US4765321A (en) * 1985-12-27 1988-08-23 Tdk Corporation Displacement sensor for a living body

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4000381A (en) * 1975-05-23 1976-12-28 Shure Brothers Inc. Moving magnet transducer
US4237347A (en) * 1977-03-14 1980-12-02 Burundukov Valentin M Electrodynamic transducer with longitudinally moving magnet
US4765321A (en) * 1985-12-27 1988-08-23 Tdk Corporation Displacement sensor for a living body

Similar Documents

Publication Publication Date Title
US3555187A (en) Stethoscope
ATE402585T1 (de) Vibrator für knochenleitungs-hörhilfen
GB1348745A (en) Electroacoustic transducers
GB8321810D0 (en) Loudspeaker with notional feedback
GB833737A (da)
CN111935611B (zh) 接触式送话器
GB149621A (en) Improvements in and relating to telephone receivers intended to be inserted into theauditory channel
GB1426391A (en) Transducer device
CN113691908A (zh) 通讯装置、穿戴设备、通讯系统及通讯方法
GB1008027A (en) Improvements in or relating to cardiophone arrangements
US3910376A (en) Stethoscope
SE7903630L (sv) Talhjelpmedel for struphuvudopererade personer
CN2492982Y (zh) 耳塞式骨导受话器
CN110166911B (zh) 一种骨传导扬声器和耳机
US1559158A (en) Sound-emitting device
US2420638A (en) Signaling generator mechanism
US2239837A (en) Telephone receiver
CN221531670U (zh) 一种骨传导发声装置、骨传导耳机头及骨传导耳机
CN214944876U (zh) 一种用于将电信号转换成气压信号的转换装置
US2492125A (en) Buzzer in telephone receiver for signaling
KR200345457Y1 (ko) 스프링강을 이용한 골전도형 마이크로스피커
US1270861A (en) Combined telegraph and telephone instrument.
GB509837A (en) Improvements in or relating to sound reproducing devices
CN115835102A (zh) 骨传导扬声器
CN2262314Y (zh) 一种靠脸侧部传声的电话话筒