GB313519A - Improvements in condenser microphones - Google Patents

Improvements in condenser microphones

Info

Publication number
GB313519A
GB313519A GB17698/29A GB1769829A GB313519A GB 313519 A GB313519 A GB 313519A GB 17698/29 A GB17698/29 A GB 17698/29A GB 1769829 A GB1769829 A GB 1769829A GB 313519 A GB313519 A GB 313519A
Authority
GB
United Kingdom
Prior art keywords
casing
amplifier
condenser microphones
crippen
assignees
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
GB17698/29A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB313519A publication Critical patent/GB313519A/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/03—Transducers capable of generating both sound as well as tactile vibration, e.g. as used in cellular phones

Abstract

313,519. British Thomson-Houston Co., Ltd., (Assignees of Crippen, E. G.). June 13, 1928, [Convention date]. Vacuum tubes.-A condenser microphone 10 is mounted on a casing, preferably conductive, which encloses the associated thermionic amplifier so that short connections are practicable. Sponge rubber mountings 21, 28 prevent sound vibrations affecting the electrode spacing in the valves. A resilient lining is arranged between the amplifier and its casing.
GB17698/29A 1928-06-13 1929-06-08 Improvements in condenser microphones Expired GB313519A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US313519XA 1928-06-13 1928-06-13

Publications (1)

Publication Number Publication Date
GB313519A true GB313519A (en) 1930-01-09

Family

ID=21858958

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17698/29A Expired GB313519A (en) 1928-06-13 1929-06-08 Improvements in condenser microphones

Country Status (1)

Country Link
GB (1) GB313519A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6691895B2 (en) * 2001-01-31 2004-02-17 Hewlett-Packard Development Company, L.P. Mixing rotary positive displacement pump for micro dispensing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6691895B2 (en) * 2001-01-31 2004-02-17 Hewlett-Packard Development Company, L.P. Mixing rotary positive displacement pump for micro dispensing

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