GB354120A - Improvements relating to electronic oscillators - Google Patents

Improvements relating to electronic oscillators

Info

Publication number
GB354120A
GB354120A GB31559/30A GB3155930A GB354120A GB 354120 A GB354120 A GB 354120A GB 31559/30 A GB31559/30 A GB 31559/30A GB 3155930 A GB3155930 A GB 3155930A GB 354120 A GB354120 A GB 354120A
Authority
GB
United Kingdom
Prior art keywords
circuit
battery
condenser
grid
coupler
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
GB31559/30A
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 GB354120A publication Critical patent/GB354120A/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
    • H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
    • H03B5/40—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a magnetostrictive resonator

Landscapes

  • Secondary Cells (AREA)

Abstract

354,120. Valve generating circuits. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Dome, R. B. ; 13, 9th Street, Schenectady, New York, U.S.A.) Oct. 21, 1930, No. 31559. Convention date, Oct. 23, 1929. [Class 40 (v).] A valve generator has a magneto-strictive coupling between anode and grid circuits and, in addition, independent means for energizing the grid circuit from the anode circuit. As shown, the oscillations generated by valve 1 are controlled in frequency by a magnetostrictive body 2 of nickel or of an alloy of nickel and iron, copper, cobalt, &c., which is wound with two coils, of which one, 3, is included in the anode circuit comprising the primary of the coupler 5 and a battery 6 shunted by a condenser 7, while the other, 4, is included in the grid circuit comprising the secondary of coupler 5, battery 13 shunted by condenser 8 and blocking condenser 9. The circuit comprising coils 3, 4, 5 is tuned to the oscillation frequency of the body 2 by a variable condenser 10 connected between the coils 3, 4. Grid bias is supplied through a choke 12 from battery 11, and the battery 13 sends an additional magnetizing current through coil 4, the circuit being completed by choke 14 and resistance 15. The feed-back due to the coupler 5 is arranged to be several times as great as that due to the magnetostrictive body.
GB31559/30A 1929-10-23 1930-10-21 Improvements relating to electronic oscillators Expired GB354120A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US354120XA 1929-10-23 1929-10-23

Publications (1)

Publication Number Publication Date
GB354120A true GB354120A (en) 1931-08-06

Family

ID=21882527

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31559/30A Expired GB354120A (en) 1929-10-23 1930-10-21 Improvements relating to electronic oscillators

Country Status (1)

Country Link
GB (1) GB354120A (en)

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