GB514418A - Improvements in or relating to electrical oscillation generators, amplifiers and thelike - Google Patents

Improvements in or relating to electrical oscillation generators, amplifiers and thelike

Info

Publication number
GB514418A
GB514418A GB1357838A GB1357838A GB514418A GB 514418 A GB514418 A GB 514418A GB 1357838 A GB1357838 A GB 1357838A GB 1357838 A GB1357838 A GB 1357838A GB 514418 A GB514418 A GB 514418A
Authority
GB
United Kingdom
Prior art keywords
inductance
resistance
circuits
damping
thelike
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
GB1357838A
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph 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 filed Critical Marconis Wireless Telegraph Co Ltd
Priority to GB1357838A priority Critical patent/GB514418A/en
Publication of GB514418A publication Critical patent/GB514418A/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
    • H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements

Abstract

514,418. Valve circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and GREEN, E. May 6, 1938, No. 13578. [Class 40 (v)] Spurious or parasitic oscillations in an oscillator or amplifier are reduced or eliminated by means of one or more damping circuits at least one of which comprises resistance, inductance and capacity, the circuits being connected between points where voltage at high undesired frequencies are developed and earth. Fig. 3 shows the invention as applied to a resistance-coupled amplifier stage, the resistance R2, inductance L1 and condenser C2 being connected as shown. The inductance and resistance are preferably combined as a single unit. The inductance L1 and capacity C2 are series resonant at the undesired parasitic frequency. The invention as applied to a cross neutralised high frequency push pull amplifier stage is indicated in Fig. 4, the damping circuits being R3...R8, C3...C8, whilst a corrected back coupled oscillator circuit is indicated in Fig. 6, the damping circuit being shown as RO, CO.
GB1357838A 1938-05-06 1938-05-06 Improvements in or relating to electrical oscillation generators, amplifiers and thelike Expired GB514418A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1357838A GB514418A (en) 1938-05-06 1938-05-06 Improvements in or relating to electrical oscillation generators, amplifiers and thelike

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1357838A GB514418A (en) 1938-05-06 1938-05-06 Improvements in or relating to electrical oscillation generators, amplifiers and thelike

Publications (1)

Publication Number Publication Date
GB514418A true GB514418A (en) 1939-11-07

Family

ID=10025502

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1357838A Expired GB514418A (en) 1938-05-06 1938-05-06 Improvements in or relating to electrical oscillation generators, amplifiers and thelike

Country Status (1)

Country Link
GB (1) GB514418A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1157274B (en) * 1960-01-08 1963-11-14 Western Electric Co Oscillator with diodes with negative resistance
WO2008155312A1 (en) * 2007-06-19 2008-12-24 Thales Electrostatic device for damping a mechanical vibration movement of a resonant moving object

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1157274B (en) * 1960-01-08 1963-11-14 Western Electric Co Oscillator with diodes with negative resistance
WO2008155312A1 (en) * 2007-06-19 2008-12-24 Thales Electrostatic device for damping a mechanical vibration movement of a resonant moving object
FR2917834A1 (en) * 2007-06-19 2008-12-26 Thales Sa ELECTROSTATIC DAMPING DEVICE FOR A VIBRATION MOVEMENT OF A RESONANT MOBILE
US8243414B2 (en) 2007-06-19 2012-08-14 Thales Electrostatic device for damping a mechanical vibration movement of a resonant moving object

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