GB181483A - Improvements relating to telephone systems with high frequency oscillations - Google Patents

Improvements relating to telephone systems with high frequency oscillations

Info

Publication number
GB181483A
GB181483A GB802121A GB802121A GB181483A GB 181483 A GB181483 A GB 181483A GB 802121 A GB802121 A GB 802121A GB 802121 A GB802121 A GB 802121A GB 181483 A GB181483 A GB 181483A
Authority
GB
United Kingdom
Prior art keywords
grids
electrodes
cathode
high frequency
improvements relating
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
GB802121A
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.)
DEUTSCHE TELEPHONWERKE GmbH
Original Assignee
DEUTSCHE TELEPHONWERKE 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 DEUTSCHE TELEPHONWERKE GmbH filed Critical DEUTSCHE TELEPHONWERKE GmbH
Priority to GB802121A priority Critical patent/GB181483A/en
Publication of GB181483A publication Critical patent/GB181483A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/62—Modulators in which amplitude of carrier component in output is dependent upon strength of modulating signal, e.g. no carrier output when no modulating signal is present

Landscapes

  • Secondary Cells (AREA)

Abstract

181,483. Gill, H. A., (Deutsche Telephonwerke Ges.). March 14, 1921. Drawings to Specification. Vacuum tubes.-A heated cathode and a cold anode are enclosed in an air or gas-filled chamber, two grids being located between the electrodes. The grids may be of different materials or maintained at different temperatures. They may be formed as entwined spirals, and they may have their plane disposed parallel to or transverse to the ionic stream. Other types of valve are described in which (1) one or both electrodes are heated, (2) one or both electrodes are of an alkali metal, (3) a potassium cathode is used, and (4) four grids are inserted between the anode and cathode.
GB802121A 1921-03-14 1921-03-14 Improvements relating to telephone systems with high frequency oscillations Expired GB181483A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB802121A GB181483A (en) 1921-03-14 1921-03-14 Improvements relating to telephone systems with high frequency oscillations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB802121A GB181483A (en) 1921-03-14 1921-03-14 Improvements relating to telephone systems with high frequency oscillations

Publications (1)

Publication Number Publication Date
GB181483A true GB181483A (en) 1922-06-14

Family

ID=9844259

Family Applications (1)

Application Number Title Priority Date Filing Date
GB802121A Expired GB181483A (en) 1921-03-14 1921-03-14 Improvements relating to telephone systems with high frequency oscillations

Country Status (1)

Country Link
GB (1) GB181483A (en)

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