BG20634A3 - Усилвател за микрофон - Google Patents

Усилвател за микрофон

Info

Publication number
BG20634A3
BG20634A3 BG013549A BG1354969A BG20634A3 BG 20634 A3 BG20634 A3 BG 20634A3 BG 013549 A BG013549 A BG 013549A BG 1354969 A BG1354969 A BG 1354969A BG 20634 A3 BG20634 A3 BG 20634A3
Authority
BG
Bulgaria
Prior art keywords
microphone amplifier
microphone
amplifier
Prior art date
Application number
BG013549A
Other languages
Bulgarian (bg)
English (en)
Inventor
Christian Kaltz
Franz Beil
Original Assignee
Siemens Aktiengesellschaft
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
Priority claimed from DE19681815174 external-priority patent/DE1815174C/de
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of BG20634A3 publication Critical patent/BG20634A3/xx

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/68—Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
    • 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
    • H03F3/187—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only in integrated circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/34—DC amplifiers in which all stages are DC-coupled
    • H03F3/343—DC amplifiers in which all stages are DC-coupled with semiconductor devices only
    • H03F3/347—DC amplifiers in which all stages are DC-coupled with semiconductor devices only in integrated circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45—Differential amplifiers
    • H03F3/45071—Differential amplifiers with semiconductor devices only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6008—Substation equipment, e.g. for use by subscribers including speech amplifiers in the transmitter circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)
BG013549A 1968-12-17 1969-12-15 Усилвател за микрофон BG20634A3 (bg)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19681815173 DE1815173B1 (de) 1968-12-17 1968-12-17 Schaltungsanordnung fuer Fernsprechmikrofonverstaerker
DE19681815174 DE1815174C (de) 1968-12-17 Fernsprechmikrofonverstarker mit ver starkerausgangsseitiger Speisung

Publications (1)

Publication Number Publication Date
BG20634A3 true BG20634A3 (bg) 1975-12-05

Family

ID=25756604

Family Applications (1)

Application Number Title Priority Date Filing Date
BG013549A BG20634A3 (bg) 1968-12-17 1969-12-15 Усилвател за микрофон

Country Status (11)

Country Link
JP (1) JPS5113962B1 (OSRAM)
AT (1) AT296403B (OSRAM)
BE (1) BE743283A (OSRAM)
BG (1) BG20634A3 (OSRAM)
CH (1) CH512862A (OSRAM)
DE (1) DE1815173B1 (OSRAM)
FR (1) FR2026348A1 (OSRAM)
GB (1) GB1244548A (OSRAM)
LU (1) LU60014A1 (OSRAM)
NL (1) NL145738B (OSRAM)
SE (1) SE346190B (OSRAM)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8004675A (nl) * 1980-08-19 1982-03-16 Philips Nv Signaalbufferschakeling in een geintegreerde schakeling voor het leveren van een uitgangssignaal aan een aansluitklem.

Also Published As

Publication number Publication date
LU60014A1 (OSRAM) 1970-02-16
SE346190B (OSRAM) 1972-06-26
CH512862A (de) 1971-09-15
NL145738B (nl) 1975-04-15
JPS5113962B1 (OSRAM) 1976-05-06
DE1815173B1 (de) 1970-08-20
DE1815174B2 (OSRAM) 1970-10-29
GB1244548A (en) 1971-09-02
BE743283A (OSRAM) 1970-06-17
AT296403B (de) 1972-02-10
FR2026348A1 (OSRAM) 1970-09-18
NL6918399A (OSRAM) 1970-06-19
DE1815174A1 (de) 1970-06-18

Similar Documents

Publication Publication Date Title
BR6912611D0 (pt) Amplificador diferencial
DE1961018B2 (de) Lautsprecher
NL158665B (nl) Versterker.
FR1505004A (fr) Amplificateur
CH490766A (de) Tonfrequenzverstärker
NL148206B (nl) Geometrische stroomversterker.
AT316669B (de) Mikrophon
DK132640B (da) Talestyret tovejsforsterker
CH489010A (de) Messwandler
CH498307A (de) Strömungsverstärkeranordnung
CH500632A (de) Signalverhältnisverstärker
AT311422B (de) Regelbarer Verstärker
NL164714C (nl) Versterker.
CH497084A (de) Leistungsverstärker
AT320738B (de) Demodulatorverstärker
AT282273B (de) Pneumatischer Verstärker
FR1493916A (fr) Amplificateur opérationnel
CH473515A (de) Mikrotelephon
AT325691B (de) Videoverstärker
BG20634A3 (bg) Усилвател за микрофон
DE1998134U (de) Lautsprechsystem
DE2032414B2 (de) Verstaerker
AT298835B (de) Leseverstärker
DK126216B (da) Læseapparat til mikrooptegnelser.
FR1501330A (fr) Amplificateur de différence