GB1374234A - Electrical attachment devices - Google Patents

Electrical attachment devices

Info

Publication number
GB1374234A
GB1374234A GB451774A GB451774A GB1374234A GB 1374234 A GB1374234 A GB 1374234A GB 451774 A GB451774 A GB 451774A GB 451774 A GB451774 A GB 451774A GB 1374234 A GB1374234 A GB 1374234A
Authority
GB
United Kingdom
Prior art keywords
plug
microphone
power source
impedance matching
matching circuit
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
GB451774A
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.)
Olympus Corp
Original Assignee
Olympus Optical 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
Priority claimed from JP11479470U external-priority patent/JPS5010731Y1/ja
Priority claimed from JP13265370U external-priority patent/JPS4923447Y1/ja
Priority claimed from JP13316570U external-priority patent/JPS5025126Y1/ja
Application filed by Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to GB451774A priority Critical patent/GB1374234A/en
Publication of GB1374234A publication Critical patent/GB1374234A/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H04R1/083—Special constructions of mouthpieces
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B2005/0002—Special dispositions or recording techniques
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Surgical Instruments (AREA)

Abstract

1374234 Condenser microphones OLYMPUS OPTICAL CO Ltd 19 Nov 1971 04517/74 Divided out of 1373215 Heading H4J [Also in Division H2] A condenser microphone 32 (Fig. 1) having an impedance matching circuit including an active element 33 (e.g. a F.E.T.) is part of a device having a plug 66 and a power source 67 for the impedance matching circuit. -When the plug 66 is pushed into a mating socket the power source 67 is automatically connected to the impedance matching circuit for putting the microphone into operative condition. As described a microswitch 157 (see also Fig. 3) is located in the housing 68 of a plug 66. A chassis 164 of a tape recorder has a microphone jack 162. When the plug 66 is inserted into the jack 162 a switch actuating member 160 is moved to close the switch 157. A cord 169 connects the plug 66 to the microphone 32, F.E.T. and power source 67.
GB451774A 1970-11-20 1971-11-19 Electrical attachment devices Expired GB1374234A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB451774A GB1374234A (en) 1970-11-20 1971-11-19 Electrical attachment devices

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP11479470U JPS5010731Y1 (en) 1970-11-20 1970-11-20
JP13265370U JPS4923447Y1 (en) 1970-12-28 1970-12-28
JP13316570U JPS5025126Y1 (en) 1970-12-29 1970-12-29
GB451774A GB1374234A (en) 1970-11-20 1971-11-19 Electrical attachment devices

Publications (1)

Publication Number Publication Date
GB1374234A true GB1374234A (en) 1974-11-20

Family

ID=27447384

Family Applications (1)

Application Number Title Priority Date Filing Date
GB451774A Expired GB1374234A (en) 1970-11-20 1971-11-19 Electrical attachment devices

Country Status (1)

Country Link
GB (1) GB1374234A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2187017A (en) * 1986-02-25 1987-08-26 Philip Robert Crouch Security plug alarm system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2187017A (en) * 1986-02-25 1987-08-26 Philip Robert Crouch Security plug alarm system

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee