NL64722C - - Google Patents

Info

Publication number
NL64722C
NL64722C NL64722DA NL64722C NL 64722 C NL64722 C NL 64722C NL 64722D A NL64722D A NL 64722DA NL 64722 C NL64722 C NL 64722C
Authority
NL
Netherlands
Application number
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.)
Publication of NL64722C publication Critical patent/NL64722C/xx

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/22—Automatic control in amplifiers having discharge tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F24F6/02—Air-humidification, e.g. cooling by humidification by evaporation of water in the air
    • F24F6/06—Air-humidification, e.g. cooling by humidification by evaporation of water in the air using moving unheated wet elements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/06—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes
    • H03D7/10—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between different pairs of electrodes
    • 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
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/02—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with tubes only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Amplifiers (AREA)
  • Details Of Television Scanning (AREA)
NL64722D 1939-07-01 NL64722C (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL217992X 1939-07-01

Publications (1)

Publication Number Publication Date
NL64722C true NL64722C (ja)

Family

ID=34709394

Family Applications (1)

Application Number Title Priority Date Filing Date
NL64722D NL64722C (ja) 1939-07-01

Country Status (6)

Country Link
US (1) US2232850A (ja)
BE (1) BE434444A (ja)
CH (2) CH212944A (ja)
FR (1) FR856581A (ja)
GB (1) GB528893A (ja)
NL (1) NL64722C (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2488357A (en) * 1947-05-20 1949-11-15 Mcclatchy Broadeasting Company Negative feedback amplifying circuit
GB721550A (en) * 1952-01-24 1955-01-05 Marconi Wireless Telegraph Co Improvements in or relating to gain control circuit arrangements

Also Published As

Publication number Publication date
US2232850A (en) 1941-02-25
CH212944A (de) 1940-12-31
BE434444A (ja)
GB528893A (en) 1940-11-08
CH217992A (de) 1941-11-15
FR856581A (fr) 1940-06-18

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