DE3436214C2 - - Google Patents

Info

Publication number
DE3436214C2
DE3436214C2 DE19843436214 DE3436214A DE3436214C2 DE 3436214 C2 DE3436214 C2 DE 3436214C2 DE 19843436214 DE19843436214 DE 19843436214 DE 3436214 A DE3436214 A DE 3436214A DE 3436214 C2 DE3436214 C2 DE 3436214C2
Authority
DE
Germany
Prior art keywords
actuator
resistor
operational amplifier
circuit arrangement
arrangement according
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
DE19843436214
Other languages
German (de)
English (en)
Other versions
DE3436214A1 (de
Inventor
Gerhard Dipl.-Ing. 6000 Frankfurt De Hecht
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.)
Telenorma Telefonbau und Normalzeit GmbH
Original Assignee
Telenorma Telefonbau und Normalzeit GmbH
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 Telenorma Telefonbau und Normalzeit GmbH filed Critical Telenorma Telefonbau und Normalzeit GmbH
Priority to DE19843436214 priority Critical patent/DE3436214A1/de
Publication of DE3436214A1 publication Critical patent/DE3436214A1/de
Application granted granted Critical
Publication of DE3436214C2 publication Critical patent/DE3436214C2/de
Granted legal-status Critical Current

Links

Classifications

    • 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
    • H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
    • 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
    • H03G3/301—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable
    • H03G3/3015—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable using diodes or transistors

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)
DE19843436214 1984-10-03 1984-10-03 Niederfrequenz-verstaerker Granted DE3436214A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19843436214 DE3436214A1 (de) 1984-10-03 1984-10-03 Niederfrequenz-verstaerker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843436214 DE3436214A1 (de) 1984-10-03 1984-10-03 Niederfrequenz-verstaerker

Publications (2)

Publication Number Publication Date
DE3436214A1 DE3436214A1 (de) 1986-04-17
DE3436214C2 true DE3436214C2 (fr) 1988-01-07

Family

ID=6246965

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19843436214 Granted DE3436214A1 (de) 1984-10-03 1984-10-03 Niederfrequenz-verstaerker

Country Status (1)

Country Link
DE (1) DE3436214A1 (fr)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2404015B2 (de) * 1974-01-29 1978-07-20 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltung einer Komplementär-Leistungsendstufe mit Transistoren für einen Operationsverstärker

Also Published As

Publication number Publication date
DE3436214A1 (de) 1986-04-17

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8127 New person/name/address of the applicant

Owner name: TELENORMA TELEFONBAU UND NORMALZEIT GMBH, 6000 FRA

D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee
8327 Change in the person/name/address of the patent owner

Owner name: TELENORMA GMBH, 6000 FRANKFURT, DE