GB266690A - Improvements in and relating to electric oscillation generators - Google Patents

Improvements in and relating to electric oscillation generators

Info

Publication number
GB266690A
GB266690A GB3238/27A GB323827A GB266690A GB 266690 A GB266690 A GB 266690A GB 3238/27 A GB3238/27 A GB 3238/27A GB 323827 A GB323827 A GB 323827A GB 266690 A GB266690 A GB 266690A
Authority
GB
United Kingdom
Prior art keywords
grid
circuit
valve
plate
plate 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
GB3238/27A
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 GB266690A publication Critical patent/GB266690A/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
    • H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
    • H03B5/34—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being vacuum tube

Landscapes

  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

266,690. British Thomson-Houston Co., Ltd., (Assignees of Hull, A. W.). Feb. 26, 1926, (Convention date]. Thermionic generators and amplifiers.-A piezo-electric element 2, shunted by a leak resistance 19, is connected between the cathode and the control grid 12 of the valve 3 for predetermining the frequency of the grid potential variations, and the impedance 2 in the plate circuit is such that the plate circuit is tuned to a frequency higher than, e.g. double, the predetermined frequency. The impedance 22 is kept as low as possible, consistently with the maintenance of oscillation in the valve 3; and the valve is given a high mutual conductance by employing a space-charge grid 11 maintained at a positive potential. The oscillator is coupled by a capacity 5 to the grid circuit of an amplifier 4, the plate circuit 9, 24 of which is tuned to the predetermined frequency and is coupled to an output circuit 8. To prevent back action of the plate circuit 9, 24 on the prime oscillator 3, a screen grid 16, maintained at a positive potential, is interposed between the plate and grid of the amplifier.
GB3238/27A 1926-02-26 1927-02-04 Improvements in and relating to electric oscillation generators Expired GB266690A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US266690XA 1926-02-26 1926-02-26

Publications (1)

Publication Number Publication Date
GB266690A true GB266690A (en) 1927-03-31

Family

ID=21833163

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3238/27A Expired GB266690A (en) 1926-02-26 1927-02-04 Improvements in and relating to electric oscillation generators

Country Status (1)

Country Link
GB (1) GB266690A (en)

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