GB180295A - Improvements in and relating to systems for producing oscillating currents - Google Patents

Improvements in and relating to systems for producing oscillating currents

Info

Publication number
GB180295A
GB180295A GB1790/22A GB179022A GB180295A GB 180295 A GB180295 A GB 180295A GB 1790/22 A GB1790/22 A GB 1790/22A GB 179022 A GB179022 A GB 179022A GB 180295 A GB180295 A GB 180295A
Authority
GB
United Kingdom
Prior art keywords
circuit
grid
plate
relating
systems
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
GB1790/22A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB180295A publication Critical patent/GB180295A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B7/00—Generation of oscillations using active element having a negative resistance between two of its electrodes
    • H03B7/02—Generation of oscillations using active element having a negative resistance between two of its electrodes with frequency-determining element comprising lumped inductance and capacitance
    • H03B7/04—Generation of oscillations using active element having a negative resistance between two of its electrodes with frequency-determining element comprising lumped inductance and capacitance active element being vacuum tube

Landscapes

  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

180,295. British Thomson - Houston Co., Ltd., (Assignees of Hull, A. W.). May 18, 1921, [Convention date]. Thermionic oscillation generators of the negative - resistance type, and having no coupling between their grid and plate circuits, comprise an electronemitting cathode 2, a grid 4 having a normal positive potential which receives electrons from the cathode and emits secondary electrons, and a plate 3 having a greater positive potential which attracts the secondary electrons. The grid potential may be given by a tap connection 11 from the plate battery 7, and is such that the grid circuit has a negative resistance, causing oscillations to be produced in the tuned circuit 5, 6. The plate circuit is coupled to'an aerial 10 or other load circuit. The circuit 5, 6 which determines the frequency is not coupled to the load.
GB1790/22A 1921-05-18 1922-01-20 Improvements in and relating to systems for producing oscillating currents Expired GB180295A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US180295XA 1921-05-18 1921-05-18

Publications (1)

Publication Number Publication Date
GB180295A true GB180295A (en) 1922-12-28

Family

ID=21785856

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1790/22A Expired GB180295A (en) 1921-05-18 1922-01-20 Improvements in and relating to systems for producing oscillating currents

Country Status (1)

Country Link
GB (1) GB180295A (en)

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