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JPS5799900A - Capacitor type microphone - Google Patents

Capacitor type microphone

Info

Publication number
JPS5799900A
JPS5799900A JP17684780A JP17684780A JPS5799900A JP S5799900 A JPS5799900 A JP S5799900A JP 17684780 A JP17684780 A JP 17684780A JP 17684780 A JP17684780 A JP 17684780A JP S5799900 A JPS5799900 A JP S5799900A
Authority
JP
Japan
Prior art keywords
hole
printed board
center
case
output terminal
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
JP17684780A
Other languages
Japanese (ja)
Other versions
JPS5952597B2 (en
Inventor
Hiroto Wada
Ichiro Suzuki
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP17684780A priority Critical patent/JPS5952597B2/en
Publication of JPS5799900A publication Critical patent/JPS5799900A/en
Publication of JPS5952597B2 publication Critical patent/JPS5952597B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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)

Abstract

PURPOSE:To improve the output terminal arrangement and construction, and to make inspection process simple and efficient, by locating either one of positive or negative output terminal of a capacitor microphone to the center of a printed board. CONSTITUTION:An electrostatic unit using electlet or the like is provided at front opening of a metal-made cylindrical case 21, and a circuit device 22 for impedance conversion is contained in the case 21, to constitute a capacitor type microphone 20. Output terminals 222, 223 of the device 22 are projected externally by inserting them to lead through-hole 231 at the center of the disc shape printed board choking the rear ridge opening of the case 21. One through-hole 231 is formed at the center of the printed board 232 and another through-hole is formed with a specified interval. A positive polarity conductor pattern 233 surrounding the through-hole 231 is formed at the back side of the printed board 23, and a negative polarity conductor pattern 244 linked to duplicated ring shape through-hole 232 is formed outside the pattern 233 to make inspection process efficient.
JP17684780A 1980-12-15 1980-12-15 condenser microphone Expired JPS5952597B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17684780A JPS5952597B2 (en) 1980-12-15 1980-12-15 condenser microphone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17684780A JPS5952597B2 (en) 1980-12-15 1980-12-15 condenser microphone

Publications (2)

Publication Number Publication Date
JPS5799900A true JPS5799900A (en) 1982-06-21
JPS5952597B2 JPS5952597B2 (en) 1984-12-20

Family

ID=16020863

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17684780A Expired JPS5952597B2 (en) 1980-12-15 1980-12-15 condenser microphone

Country Status (1)

Country Link
JP (1) JPS5952597B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7344643B2 (en) 2005-06-30 2008-03-18 Siemens Water Technologies Holding Corp. Process to enhance phosphorus removal for activated sludge wastewater treatment systems
NZ566051A (en) 2005-09-02 2011-03-31 Siemens Water Tech Corp Screening of inert solids from a low-yield wastewater treatment process
WO2007103499A2 (en) 2006-03-07 2007-09-13 Siemens Water Technologies Corp. Multivalent metal ion management for low sludge processes
US8894856B2 (en) 2008-03-28 2014-11-25 Evoqua Water Technologies Llc Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods
WO2011133738A1 (en) 2010-04-21 2011-10-27 Siemens Pte. Ltd. Methods and systems for treating wastewater

Also Published As

Publication number Publication date
JPS5952597B2 (en) 1984-12-20

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