FR942174A - Improvements to thermionic amplifiers - Google Patents

Improvements to thermionic amplifiers

Info

Publication number
FR942174A
FR942174A FR942174DA FR942174A FR 942174 A FR942174 A FR 942174A FR 942174D A FR942174D A FR 942174DA FR 942174 A FR942174 A FR 942174A
Authority
FR
France
Prior art keywords
thermionic amplifiers
thermionic
amplifiers
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
Other languages
French (fr)
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of FR942174A publication Critical patent/FR942174A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/1607—Supply circuits
    • H04B1/1623—Supply circuits using tubes
    • 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
    • H03F1/36—Negative-feedback-circuit arrangements with or without positive feedback in discharge-tube amplifiers
    • 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
    • H03G3/06—Manually-operated control in untuned amplifiers having discharge tubes
    • H03G3/08—Manually-operated control in untuned amplifiers having discharge tubes incorporating negative feedback
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Emergency Protection Circuit Devices (AREA)
FR942174D 1940-12-24 1947-02-03 Improvements to thermionic amplifiers Expired FR942174A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US371498A US2342822A (en) 1940-12-24 1940-12-24 Amplifying system

Publications (1)

Publication Number Publication Date
FR942174A true FR942174A (en) 1949-02-01

Family

ID=23464205

Family Applications (1)

Application Number Title Priority Date Filing Date
FR942174D Expired FR942174A (en) 1940-12-24 1947-02-03 Improvements to thermionic amplifiers

Country Status (5)

Country Link
US (1) US2342822A (en)
BE (1) BE471331A (en)
FR (1) FR942174A (en)
GB (1) GB552331A (en)
NL (1) NL68241C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2481533A (en) * 1944-06-06 1949-09-13 Rca Corp Audio amplifier circuits for radio transmitters
US2710721A (en) * 1945-11-27 1955-06-14 Amasa S Bishop Electronic dividing circuit
US2541811A (en) * 1947-10-10 1951-02-13 Joseph W Crownover Hearing aid amplifier
US2761918A (en) * 1952-11-19 1956-09-04 Dictograph Products Co Inc Amplifier with gain control and power control
WO2007009483A1 (en) * 2005-07-21 2007-01-25 Freescale Semiconductor, Inc. Microphone amplification arrangement and integrated circuit therefor

Also Published As

Publication number Publication date
US2342822A (en) 1944-02-29
BE471331A (en)
NL68241C (en)
GB552331A (en) 1943-04-01

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