JPS633516B2 - - Google Patents

Info

Publication number
JPS633516B2
JPS633516B2 JP7500879A JP7500879A JPS633516B2 JP S633516 B2 JPS633516 B2 JP S633516B2 JP 7500879 A JP7500879 A JP 7500879A JP 7500879 A JP7500879 A JP 7500879A JP S633516 B2 JPS633516 B2 JP S633516B2
Authority
JP
Japan
Prior art keywords
semiconductor device
lead
fet
resin
ecm
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.)
Expired
Application number
JP7500879A
Other languages
English (en)
Japanese (ja)
Other versions
JPS55166400A (en
Inventor
Hiroshi Suga
Kenji Fujiwara
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.)
NEC Corp
Original Assignee
Nippon Electric 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 Electric Co Ltd filed Critical Nippon Electric Co Ltd
Priority to JP7500879A priority Critical patent/JPS55166400A/ja
Publication of JPS55166400A publication Critical patent/JPS55166400A/ja
Publication of JPS633516B2 publication Critical patent/JPS633516B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R19/00—Electrostatic transducers
    • H04R19/04—Microphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
JP7500879A 1979-06-14 1979-06-14 Capacitor microphone Granted JPS55166400A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7500879A JPS55166400A (en) 1979-06-14 1979-06-14 Capacitor microphone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7500879A JPS55166400A (en) 1979-06-14 1979-06-14 Capacitor microphone

Publications (2)

Publication Number Publication Date
JPS55166400A JPS55166400A (en) 1980-12-25
JPS633516B2 true JPS633516B2 (https=) 1988-01-25

Family

ID=13563730

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7500879A Granted JPS55166400A (en) 1979-06-14 1979-06-14 Capacitor microphone

Country Status (1)

Country Link
JP (1) JPS55166400A (https=)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61232799A (ja) * 1985-04-09 1986-10-17 Matsushita Electric Ind Co Ltd エレクトレツトコンデンサマイクロホン

Also Published As

Publication number Publication date
JPS55166400A (en) 1980-12-25

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