GB2121646B - Transducer - Google Patents

Transducer

Info

Publication number
GB2121646B
GB2121646B GB08312705A GB8312705A GB2121646B GB 2121646 B GB2121646 B GB 2121646B GB 08312705 A GB08312705 A GB 08312705A GB 8312705 A GB8312705 A GB 8312705A GB 2121646 B GB2121646 B GB 2121646B
Authority
GB
United Kingdom
Prior art keywords
transducer
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
GB08312705A
Other versions
GB2121646A (en
GB8312705D0 (en
Inventor
John Christopher Greenwood
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.)
ITT Industries Ltd
Original Assignee
ITT Industries 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 ITT Industries Ltd filed Critical ITT Industries Ltd
Priority to GB08312705A priority Critical patent/GB2121646B/en
Publication of GB8312705D0 publication Critical patent/GB8312705D0/en
Publication of GB2121646A publication Critical patent/GB2121646A/en
Application granted granted Critical
Publication of GB2121646B publication Critical patent/GB2121646B/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
    • H04R21/00—Variable-resistance transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Pressure Sensors (AREA)
GB08312705A 1982-05-13 1983-05-09 Transducer Expired GB2121646B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08312705A GB2121646B (en) 1982-05-13 1983-05-09 Transducer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8213886 1982-05-13
GB08312705A GB2121646B (en) 1982-05-13 1983-05-09 Transducer

Publications (3)

Publication Number Publication Date
GB8312705D0 GB8312705D0 (en) 1983-06-15
GB2121646A GB2121646A (en) 1983-12-21
GB2121646B true GB2121646B (en) 1985-08-07

Family

ID=26282821

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08312705A Expired GB2121646B (en) 1982-05-13 1983-05-09 Transducer

Country Status (1)

Country Link
GB (1) GB2121646B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59136977A (en) * 1983-01-26 1984-08-06 Hitachi Ltd Pressure sensitive semiconductor device and manufacture thereof
GB2215053B (en) * 1988-02-13 1991-09-11 Stc Plc Transducer device

Also Published As

Publication number Publication date
GB2121646A (en) 1983-12-21
GB8312705D0 (en) 1983-06-15

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee