AU534336B2 - Telephone subset transmitter with amplifier - Google Patents

Telephone subset transmitter with amplifier

Info

Publication number
AU534336B2
AU534336B2 AU63479/80A AU6347980A AU534336B2 AU 534336 B2 AU534336 B2 AU 534336B2 AU 63479/80 A AU63479/80 A AU 63479/80A AU 6347980 A AU6347980 A AU 6347980A AU 534336 B2 AU534336 B2 AU 534336B2
Authority
AU
Australia
Prior art keywords
amplifier
telephone subset
transmitter
subset transmitter
telephone
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 - Fee Related
Application number
AU63479/80A
Other versions
AU6347980A (en
Inventor
Guenter Peltz
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of AU6347980A publication Critical patent/AU6347980A/en
Application granted granted Critical
Publication of AU534336B2 publication Critical patent/AU534336B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04R3/00—Circuits for transducers, loudspeakers or microphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
  • Amplifiers (AREA)
AU63479/80A 1979-10-22 1980-10-17 Telephone subset transmitter with amplifier Expired - Fee Related AU534336B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792942641 DE2942641A1 (en) 1979-10-22 1979-10-22 Integrated device for insertion into telephone receiver - is substitute carbon microphone and has P-enrichment FET
DE29426413 1979-10-22

Publications (2)

Publication Number Publication Date
AU6347980A AU6347980A (en) 1981-04-30
AU534336B2 true AU534336B2 (en) 1984-01-19

Family

ID=6084078

Family Applications (1)

Application Number Title Priority Date Filing Date
AU63479/80A Expired - Fee Related AU534336B2 (en) 1979-10-22 1980-10-17 Telephone subset transmitter with amplifier

Country Status (3)

Country Link
AU (1) AU534336B2 (en)
DE (1) DE2942641A1 (en)
NZ (1) NZ195272A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19514308A1 (en) * 1995-04-18 1996-10-24 Siemens Ag Ultrasonic transducer head with integrated controllable amplifier devices

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4890447A (en) * 1972-03-02 1973-11-26
GB1410822A (en) * 1972-10-05 1975-10-22 Marconi Co Ltd Electroacoustic arrangements
NL7313455A (en) * 1973-10-01 1975-04-03 Philips Nv MICROPHONE WITH ELECTROSTATIC CAPSULE.
JPS5139561Y2 (en) * 1973-11-15 1976-09-28
GB1467284A (en) * 1974-10-09 1977-03-16 Oki Electric Ind Co Ltd Ultrasonic wave generatorp
GB1571304A (en) * 1976-02-24 1980-07-16 Lucas Industries Ltd Drive circuit for a piezo electric crystal
US4063050A (en) * 1976-12-30 1977-12-13 Industrial Research Products, Inc. Acoustic transducer with improved electret assembly
DE2811668C2 (en) * 1978-03-17 1982-03-04 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Adaptation circuit for high-resistance voltage sources

Also Published As

Publication number Publication date
AU6347980A (en) 1981-04-30
DE2942641A1 (en) 1981-04-30
NZ195272A (en) 1984-03-16

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