CH474189A - Wechselstromsignalverstärker, insbesondere Mikrofonverstärker im Fernsprechhandapparat - Google Patents

Wechselstromsignalverstärker, insbesondere Mikrofonverstärker im Fernsprechhandapparat

Info

Publication number
CH474189A
CH474189A CH1544567A CH1544567A CH474189A CH 474189 A CH474189 A CH 474189A CH 1544567 A CH1544567 A CH 1544567A CH 1544567 A CH1544567 A CH 1544567A CH 474189 A CH474189 A CH 474189A
Authority
CH
Switzerland
Prior art keywords
amplifiers
telephone handset
particular microphone
signal
signal amplifiers
Prior art date
Application number
CH1544567A
Other languages
English (en)
Inventor
Richard Pitkin Sydney
Original Assignee
Int 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 Int Standard Electric Corp filed Critical Int Standard Electric Corp
Publication of CH474189A publication Critical patent/CH474189A/de

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
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • 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
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/302—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in bipolar transistor amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Circuit For Audible Band Transducer (AREA)
CH1544567A 1966-11-04 1967-11-03 Wechselstromsignalverstärker, insbesondere Mikrofonverstärker im Fernsprechhandapparat CH474189A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4955066A GB1148115A (en) 1966-11-04 1966-11-04 Acousto-electrical arrangement

Publications (1)

Publication Number Publication Date
CH474189A true CH474189A (de) 1969-06-15

Family

ID=10452713

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1544567A CH474189A (de) 1966-11-04 1967-11-03 Wechselstromsignalverstärker, insbesondere Mikrofonverstärker im Fernsprechhandapparat

Country Status (6)

Country Link
BE (1) BE706085A (de)
CH (1) CH474189A (de)
DE (1) DE1537618B2 (de)
ES (1) ES346701A1 (de)
GB (1) GB1148115A (de)
NL (1) NL6714955A (de)

Also Published As

Publication number Publication date
NL6714955A (de) 1968-05-06
ES346701A1 (es) 1968-12-16
DE1537618B2 (de) 1973-11-22
GB1148115A (en) 1969-04-10
BE706085A (de) 1968-05-06
DE1537618A1 (de) 1970-03-12

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Legal Events

Date Code Title Description
PL Patent ceased