NL6900623A - - Google Patents

Info

Publication number
NL6900623A
NL6900623A NL6900623A NL6900623A NL6900623A NL 6900623 A NL6900623 A NL 6900623A NL 6900623 A NL6900623 A NL 6900623A NL 6900623 A NL6900623 A NL 6900623A NL 6900623 A NL6900623 A NL 6900623A
Authority
NL
Netherlands
Application number
NL6900623A
Other versions
NL144107B (nl
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 filed Critical
Publication of NL6900623A publication Critical patent/NL6900623A/xx
Publication of NL144107B publication Critical patent/NL144107B/xx

Links

Classifications

    • 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
    • H03F1/52—Circuit arrangements for protecting such amplifiers
    • H03F1/523—Circuit arrangements for protecting such amplifiers for amplifiers using field-effect devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
    • H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
    • H03F3/185—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only with field-effect devices
    • H03F3/1855—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only with field-effect devices with junction-FET devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)
NL696900623A 1968-07-03 1969-01-15 Versterker met een veldeffecttransistor van het junctiontype. NL144107B (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US74223968A 1968-07-03 1968-07-03

Publications (2)

Publication Number Publication Date
NL6900623A true NL6900623A (de) 1970-01-06
NL144107B NL144107B (nl) 1974-11-15

Family

ID=24984024

Family Applications (1)

Application Number Title Priority Date Filing Date
NL696900623A NL144107B (nl) 1968-07-03 1969-01-15 Versterker met een veldeffecttransistor van het junctiontype.

Country Status (7)

Country Link
US (1) US3512100A (de)
CH (1) CH490766A (de)
DE (1) DE1916703C3 (de)
DK (1) DK138349B (de)
FR (1) FR1597239A (de)
GB (1) GB1219299A (de)
NL (1) NL144107B (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3728496A (en) * 1970-05-05 1973-04-17 Westinghouse Electric Corp Thin film transistor phonograph amplifier
JPS5065343U (de) * 1973-10-16 1975-06-12
US4063050A (en) * 1976-12-30 1977-12-13 Industrial Research Products, Inc. Acoustic transducer with improved electret assembly
US5097224A (en) * 1991-04-11 1992-03-17 Telex Communications, Inc. Self-biasing, low noise amplifier of extended dynamic range
JP3437237B2 (ja) * 1994-01-21 2003-08-18 松下電器産業株式会社 増幅装置
US5446413A (en) * 1994-05-20 1995-08-29 Knowles Electronics, Inc. Impedance circuit for a miniature hearing aid
US5589799A (en) * 1994-09-29 1996-12-31 Tibbetts Industries, Inc. Low noise amplifier for microphone
US6023194A (en) * 1997-05-23 2000-02-08 Tibbetts Industries, Inc. Amplifier with reduced input capacitance
US7092538B2 (en) * 2002-04-15 2006-08-15 Knowles Electronics, Llc Switched microphone buffer
US7221766B2 (en) * 2002-04-15 2007-05-22 Knowles Electronics, Llc Microphone input buffer biasing circuit
US7688987B2 (en) * 2002-04-24 2010-03-30 Knowles Electronics, Llc Electret microphone buffer circuit with significantly enhanced power supply rejection
US8536924B2 (en) * 2010-09-02 2013-09-17 Fairchild Semiconductor Corporation High-impedance network
US20120140956A1 (en) * 2010-12-06 2012-06-07 Research In Motion Limited Differential microphone circuit
US8750537B2 (en) 2010-12-06 2014-06-10 Blackberry Limited Differential microphone circuit
US8829991B2 (en) 2011-01-14 2014-09-09 Fairchild Semiconductor Corporation DC offset tracking circuit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517863A (en) * 1944-10-12 1950-08-08 Darol K Froman Voltage supply circuit for vacuum tubes
US2927275A (en) * 1956-04-13 1960-03-01 Sonotone Corp Hearing aid transistor amplifiers
US3286189A (en) * 1964-01-20 1966-11-15 Ithaco High gain field-effect transistor-loaded amplifier

Also Published As

Publication number Publication date
US3512100A (en) 1970-05-12
CH490766A (de) 1970-05-15
FR1597239A (de) 1970-06-22
DK138349C (de) 1979-01-29
DE1916703B2 (de) 1970-11-05
NL144107B (nl) 1974-11-15
DK138349B (da) 1978-08-14
DE1916703C3 (de) 1971-06-03
GB1219299A (en) 1971-01-13
DE1916703A1 (de) 1970-01-29

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee
NL80 Abbreviated name of patent owner mentioned of already nullified patent

Owner name: INDUSTRIAL