JPH0226891U - - Google Patents

Info

Publication number
JPH0226891U
JPH0226891U JP10509488U JP10509488U JPH0226891U JP H0226891 U JPH0226891 U JP H0226891U JP 10509488 U JP10509488 U JP 10509488U JP 10509488 U JP10509488 U JP 10509488U JP H0226891 U JPH0226891 U JP H0226891U
Authority
JP
Japan
Prior art keywords
face
back electrodes
end plate
diaphragms
case
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
JP10509488U
Other languages
Japanese (ja)
Other versions
JP2536239Y2 (en
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 filed Critical
Priority to JP1988105094U priority Critical patent/JP2536239Y2/en
Publication of JPH0226891U publication Critical patent/JPH0226891U/ja
Application granted granted Critical
Publication of JP2536239Y2 publication Critical patent/JP2536239Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案の実施例を示す断面図である
。 FIG. 1 is a sectional view showing an embodiment of this invention.

Claims (1)

【実用新案登録請求の範囲】 両端板にそれぞれ音孔が形成され、側面中央に
音孔が形成されたケースと、 そのケースの両端板とそれぞれ対向して配され
た第１、第２振動板と、 その第１、第２振動板と対向して配され、音孔
が形成された第１、第２背極と、 これら第１、第２背極を保持する共通の背極ホ
ルダと、 その背極ホルダ内に配された共通の音響抵抗材
と、 上記第１、第２背極にそれぞれゲートが接続さ
れたデユアルゲートＦＥＴと、 を具備する単一指向性マイクロホン。[Claims for Utility Model Registration] A case in which a sound hole is formed in each end plate and a sound hole is formed in the center of the side surface, and first and second diaphragms arranged to face each end plate of the case. , first and second back electrodes arranged to face the first and second diaphragms and having sound holes formed therein, and a common back electrode holder that holds these first and second back electrodes; A unidirectional microphone comprising: a common acoustic resistance material disposed within the back electrode holder; and a dual gate FET having gates connected to the first and second back electrodes, respectively.
JP1988105094U 1988-08-08 1988-08-08 Unidirectional microphone Expired - Lifetime JP2536239Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988105094U JP2536239Y2 (en) 1988-08-08 1988-08-08 Unidirectional microphone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988105094U JP2536239Y2 (en) 1988-08-08 1988-08-08 Unidirectional microphone

Publications (2)

Publication Number Publication Date
JPH0226891U true JPH0226891U (en) 1990-02-21
JP2536239Y2 JP2536239Y2 (en) 1997-05-21

Family

ID=31337403

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988105094U Expired - Lifetime JP2536239Y2 (en) 1988-08-08 1988-08-08 Unidirectional microphone

Country Status (1)

Country Link
JP (1) JP2536239Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006304048A (en) * 2005-04-22 2006-11-02 Sony Corp Microphone
JP2007225533A (en) * 2006-02-27 2007-09-06 Audio Technica Corp Tension measuring device for diaphragm

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54133320A (en) * 1978-04-07 1979-10-17 Victor Co Of Japan Ltd Directivity changeable condenser microphone
JPH0241099A (en) * 1988-07-30 1990-02-09 Sony Corp Microphone equipment

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54133320A (en) * 1978-04-07 1979-10-17 Victor Co Of Japan Ltd Directivity changeable condenser microphone
JPH0241099A (en) * 1988-07-30 1990-02-09 Sony Corp Microphone equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006304048A (en) * 2005-04-22 2006-11-02 Sony Corp Microphone
JP2007225533A (en) * 2006-02-27 2007-09-06 Audio Technica Corp Tension measuring device for diaphragm

Also Published As

Publication number Publication date
JP2536239Y2 (en) 1997-05-21

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