GB561160A - Improvements in or relating to thermionic valve oscillators - Google Patents

Improvements in or relating to thermionic valve oscillators

Info

Publication number
GB561160A
GB561160A GB1552742A GB1552742A GB561160A GB 561160 A GB561160 A GB 561160A GB 1552742 A GB1552742 A GB 1552742A GB 1552742 A GB1552742 A GB 1552742A GB 561160 A GB561160 A GB 561160A
Authority
GB
United Kingdom
Prior art keywords
valve
impedance
linear
nlr
iron
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
GB1552742A
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.)
CHARLES FRANCIS CAMPBELL
Automatic Telephone and Electric Co Ltd
Original Assignee
CHARLES FRANCIS CAMPBELL
Automatic Telephone and Electric 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
Priority to BE466456D priority Critical patent/BE466456A/xx
Application filed by CHARLES FRANCIS CAMPBELL, Automatic Telephone and Electric Co Ltd filed Critical CHARLES FRANCIS CAMPBELL
Priority to GB1552742A priority patent/GB561160A/en
Publication of GB561160A publication Critical patent/GB561160A/en
Priority to FR931234D priority patent/FR931234A/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
    • 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
    • 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
    • H03B5/02—Details
    • H03B5/04—Modifications of generator to compensate for variations in physical values, e.g. power supply, load, temperature

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

561,160. Valve generating circuits. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd., and CAMPBELL, C. F. Nov. 4, 1942, No. 15527. [Class 40 (v)] Stability of frequency in an oscillator of the electron - coupled type and using an iron-cored inductance is obtained by arranging a non- linear impedance in the circuit so as to control the oscillatory current flowing in the inductance with varying operating voltages. The Figure shows a screen-grid oscillator with the screen grid connected to a potentiometer arranged in series with a non- linear resistance NLR of the silicon carbide type or a non-linear element comprising an iron-cored choke or a glow lamp of the metallic filament type. In this way an increase in the supply voltage will decrease the 'impedance NLR and thus the load on the valve so that the voltage across the circuit L, C1 will be prevented from increasing by the increase in current and the consequent voltage drop in the internal impedance of the valve. Reference has been directed by the Comptroller to Specification 560,780.
GB1552742A 1942-11-04 1942-11-04 Improvements in or relating to thermionic valve oscillators Expired GB561160A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE466456D BE466456A (en) 1942-11-04
GB1552742A GB561160A (en) 1942-11-04 1942-11-04 Improvements in or relating to thermionic valve oscillators
FR931234D FR931234A (en) 1942-11-04 1946-07-24 Improvements to thermionic valve oscillators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1552742A GB561160A (en) 1942-11-04 1942-11-04 Improvements in or relating to thermionic valve oscillators

Publications (1)

Publication Number Publication Date
GB561160A true GB561160A (en) 1944-05-08

Family

ID=10060705

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1552742A Expired GB561160A (en) 1942-11-04 1942-11-04 Improvements in or relating to thermionic valve oscillators

Country Status (3)

Country Link
BE (1) BE466456A (en)
FR (1) FR931234A (en)
GB (1) GB561160A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2840645A (en) * 1954-05-17 1958-06-24 Rca Corp Television intermediate frequency amplifiers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2840645A (en) * 1954-05-17 1958-06-24 Rca Corp Television intermediate frequency amplifiers

Also Published As

Publication number Publication date
FR931234A (en) 1948-02-17
BE466456A (en)

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