GB491663A - Improvements in or relating to oscillation generators embodying electron discharge devices - Google Patents

Improvements in or relating to oscillation generators embodying electron discharge devices

Info

Publication number
GB491663A
GB491663A GB6723/37A GB672337A GB491663A GB 491663 A GB491663 A GB 491663A GB 6723/37 A GB6723/37 A GB 6723/37A GB 672337 A GB672337 A GB 672337A GB 491663 A GB491663 A GB 491663A
Authority
GB
United Kingdom
Prior art keywords
valve
inductance
anode
frequency
circuit
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
GB6723/37A
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi 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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Priority to GB6723/37A priority Critical patent/GB491663A/en
Priority to US191156A priority patent/US2225897A/en
Priority to DEM140952D priority patent/DE756195C/en
Publication of GB491663A publication Critical patent/GB491663A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/10—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being vacuum tube

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Primary Cells (AREA)

Abstract

491,663. Valve generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and BELL, D. A. March 6, 1937, No. 6723. [Class 40 (v)] A valve generator, in which the frequency is not substantially varied by changes in the supply voltages, the ageing of the valve, or the production of harmonics, has a high degree of regenerative coupling (condenser 4) between the tuned anode circuit and the grid, and resistive means 16 in the anode circuit for producing a degree of negative feed-back, the resistive means being connected between a tapping on the tuned-circuit inductance 7 and the anode battery 14 and at the end adjacent the battery to a point at cathode potential as regards the oscillation frequency. If the resistance contains distributed capacity, this is neutralized by a series inductance, and where there is distributed inductance, a network having two parallel branches one containing resistance and capacity and the other resistance and inductance may be used, the whole being purely resistive. The coupling between the anode and grid may be so chosen that the effects of space charge variations in the valve upon the frequency substantially cancel out. Actual examples are given showing the frequency stability obtained for particular values of the circuit elements.
GB6723/37A 1937-03-06 1937-03-06 Improvements in or relating to oscillation generators embodying electron discharge devices Expired GB491663A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB6723/37A GB491663A (en) 1937-03-06 1937-03-06 Improvements in or relating to oscillation generators embodying electron discharge devices
US191156A US2225897A (en) 1937-03-06 1938-02-18 Oscillator circuit
DEM140952D DE756195C (en) 1937-03-06 1938-03-08 Three-point circuit for generating high-frequency oscillations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6723/37A GB491663A (en) 1937-03-06 1937-03-06 Improvements in or relating to oscillation generators embodying electron discharge devices

Publications (1)

Publication Number Publication Date
GB491663A true GB491663A (en) 1938-09-06

Family

ID=9819597

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6723/37A Expired GB491663A (en) 1937-03-06 1937-03-06 Improvements in or relating to oscillation generators embodying electron discharge devices

Country Status (3)

Country Link
US (1) US2225897A (en)
DE (1) DE756195C (en)
GB (1) GB491663A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE878228C (en) * 1943-12-15 1953-06-01 Siemens Ag Feedback tube generator
NL64009C (en) * 1944-02-15 1949-09-15
US4621241A (en) * 1985-06-07 1986-11-04 Vari-L Company, Inc. Wide range electronic oscillator
US6466099B2 (en) 2001-01-03 2002-10-15 Motorola, Inc. Voltage controlled oscillator (VCO) in colpitts configuration

Also Published As

Publication number Publication date
US2225897A (en) 1940-12-24
DE756195C (en) 1952-05-12

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