BE389998A - - Google Patents

Info

Publication number
BE389998A
BE389998A BE389998DA BE389998A BE 389998 A BE389998 A BE 389998A BE 389998D A BE389998D A BE 389998DA BE 389998 A BE389998 A BE 389998A
Authority
BE
Belgium
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 BE389998A publication Critical patent/BE389998A/xx

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H03G1/0047—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using photo-electric elements
    • 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
BE389998D 1931-06-17 BE389998A (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1761431A GB380499A (en) 1931-06-17 1931-06-17 Improvements in or relating to thermionic amplifiers and control means for use in connection therewith

Publications (1)

Publication Number Publication Date
BE389998A true BE389998A (ja)

Family

ID=10098211

Family Applications (1)

Application Number Title Priority Date Filing Date
BE389998D BE389998A (ja) 1931-06-17

Country Status (2)

Country Link
BE (1) BE389998A (ja)
GB (1) GB380499A (ja)

Also Published As

Publication number Publication date
GB380499A (en) 1932-09-19

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