AT288508B - Vorrichtung mit einem Transistorverstärker - Google Patents

Vorrichtung mit einem Transistorverstärker

Info

Publication number
AT288508B
AT288508B AT540468A AT540468A AT288508B AT 288508 B AT288508 B AT 288508B AT 540468 A AT540468 A AT 540468A AT 540468 A AT540468 A AT 540468A AT 288508 B AT288508 B AT 288508B
Authority
AT
Austria
Prior art keywords
transistor amplifier
amplifier
transistor
Prior art date
Application number
AT540468A
Other languages
English (en)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Application granted granted Critical
Publication of AT288508B publication Critical patent/AT288508B/de

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
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/02—Manually-operated control
    • H03G3/04—Manually-operated control in untuned amplifiers
    • H03G3/10—Manually-operated control in untuned amplifiers having semiconductor devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/02—Manually-operated control
    • H03G3/04—Manually-operated control in untuned amplifiers
    • H03G3/10—Manually-operated control in untuned amplifiers having semiconductor devices
    • H03G3/12—Manually-operated control in untuned amplifiers having semiconductor devices incorporating negative feedback
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
AT540468A 1967-06-09 1968-06-06 Vorrichtung mit einem Transistorverstärker AT288508B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL676708111A NL146670B (nl) 1967-06-09 1967-06-09 Inrichting met een transistorversterker.

Publications (1)

Publication Number Publication Date
AT288508B true AT288508B (de) 1971-03-10

Family

ID=19800400

Family Applications (1)

Application Number Title Priority Date Filing Date
AT540468A AT288508B (de) 1967-06-09 1968-06-06 Vorrichtung mit einem Transistorverstärker

Country Status (9)

Country Link
US (1) US3578913A (de)
AT (1) AT288508B (de)
BE (1) BE716283A (de)
CH (1) CH475673A (de)
DE (1) DE1289121B (de)
ES (1) ES354768A1 (de)
FR (1) FR1571567A (de)
GB (1) GB1210715A (de)
NL (1) NL146670B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3763333A (en) * 1972-07-24 1973-10-02 Ambitex Co Acoustic feedback stabilization system particularly suited for hearing aids
US4194165A (en) * 1978-06-28 1980-03-18 Skulski Peter J Miniature guitar amplifier
US4543453A (en) * 1983-03-30 1985-09-24 Beltone Electronics Corporation Electronic hearing aid control circuit
US6480610B1 (en) * 1999-09-21 2002-11-12 Sonic Innovations, Inc. Subband acoustic feedback cancellation in hearing aids
US6757395B1 (en) 2000-01-12 2004-06-29 Sonic Innovations, Inc. Noise reduction apparatus and method
KR100718384B1 (ko) * 2005-02-25 2007-05-14 주식회사 팬택앤큐리텔 Ｉｃ 칩 형태로 구현한 이동통신 단말기의 청취 보조 회로및 이를 내장한 이동통신 단말기

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3030586A (en) * 1955-02-18 1962-04-17 Philco Corp Transistor circuit
DE1135048B (de) * 1961-01-11 1962-08-23 Robert Bosch Elektronik Ges Mi Transistor-Niederfrequenzverstaerker mit Lautstaerkeregelung
US3140348A (en) * 1961-03-21 1964-07-07 Paul S Jones Transistor amplifier
US3382321A (en) * 1964-07-09 1968-05-07 Radioear Corp Transistorized amplifier circuit for hearing aids
US3399276A (en) * 1965-04-28 1968-08-27 Admiral Corp Rc coupled transistor amplifier

Also Published As

Publication number Publication date
CH475673A (de) 1969-07-15
DE1289121B (de) 1969-02-13
ES354768A1 (es) 1969-11-16
US3578913A (en) 1971-05-18
BE716283A (de) 1968-12-09
GB1210715A (en) 1970-10-28
FR1571567A (de) 1969-06-20
NL6708111A (de) 1968-12-10
NL146670B (nl) 1975-07-15

Similar Documents

Publication Publication Date Title
AT292080B (de) Elektro-optische Vorrichtung
AT287082B (de) Elektro-optische Vorrichtung
CH486880A (de) Prothetische Vorrichtung
CH481644A (de) Kolotomiegerät
AT289198B (de) Verstärkerschaltung mit einem Feldeffekttransistor
AT274894B (de) Vorrichtung mit einem schrittweise einstellbaren Oszillator
CH478007A (de) Haspelvorrichtung
AT286774B (de) Photoempfindliche Vorrichtung
CH534960A (de) Elektrochemische Vorrichtung
DE6751367U (de) Pyrotechnische vorrichtung
AT288508B (de) Vorrichtung mit einem Transistorverstärker
AT288489B (de) Verstärkerschaltung mit einem Feldeffekttransistor
AT278648B (de) Transportvorrichtung
CH470188A (de) Katheterisier-Vorrichtung
CH491543A (de) Magnetostriktive Vorrichtung
AT290621B (de) Vorrichtung mit einem Transistorverstärker
AT284330B (de) Injektionsapparat
CH488460A (de) Katheterisiereinrichtung
AT268938B (de) Vorrichtung zum Dreieckzielen
AT288446B (de) Rundschablone
AT295222B (de) Formeinrichtung
CH447286A (de) Verstärkerschaltung mit einem Transistor
CH477065A (de) Identifiziereinrichtung
CH468216A (de) Sortiervorrichtung
CH470777A (de) Abisoliervorrichtung

Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee