GB228159A - Improvements in vacuum tube oscillation generators for wireless transmission - Google Patents

Improvements in vacuum tube oscillation generators for wireless transmission

Info

Publication number
GB228159A
GB228159A GB1611/25A GB161125A GB228159A GB 228159 A GB228159 A GB 228159A GB 1611/25 A GB1611/25 A GB 1611/25A GB 161125 A GB161125 A GB 161125A GB 228159 A GB228159 A GB 228159A
Authority
GB
United Kingdom
Prior art keywords
grid
oscillators
valve
wireless transmission
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
GB1611/25A
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.)
CBS Corp
Original Assignee
Westinghouse Electric and Manufacturing Co
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 Westinghouse Electric and Manufacturing Co filed Critical Westinghouse Electric and Manufacturing Co
Publication of GB228159A publication Critical patent/GB228159A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/16—Amplitude modulation by means of discharge device having at least three electrodes
    • H03C1/18—Amplitude modulation by means of discharge device having at least three electrodes carrier applied to control grid
    • H03C1/20—Amplitude modulation by means of discharge device having at least three electrodes carrier applied to control grid modulating signal applied to anode

Landscapes

  • Transmitters (AREA)

Abstract

228,159. Westinghouse Electric & Manufacturing Co., (Assignees of Davis, R. L.). Jan. 22, 1924, [Convention date]. Thermionic generators and modulating systems. - In wireless transmission systems employing valve oscillators and valve modulators connected according to the constant-current modulation system, a parallel resonant circuit 11, 12 is introduced between the grid inductance and the grid of the valve oscillators 1, 2. The tuning of the circuit 11, 12 is not critical and may differ by a substantial percentage from the oscillation irequency, its function probably being to adjust the phase of the grid potential into correct relation with that of the plate current. When this is effected, a lower value of oscillating grid potential and a smaller value of inductance in the grid circuit may be employed. Increased stability, and damping of parasitic oscillations, are also effected. The modulating-valves 3, 4 have their plates connected through a choke coil to the same source 14 as the oscillators 1, 2. Specification 148,447 is referred to.
GB1611/25A 1924-01-22 1925-01-19 Improvements in vacuum tube oscillation generators for wireless transmission Expired GB228159A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US228159XA 1924-01-22 1924-01-22

Publications (1)

Publication Number Publication Date
GB228159A true GB228159A (en) 1925-07-30

Family

ID=21811582

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1611/25A Expired GB228159A (en) 1924-01-22 1925-01-19 Improvements in vacuum tube oscillation generators for wireless transmission

Country Status (1)

Country Link
GB (1) GB228159A (en)

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