GB177763A - Improvements in wireless telegraph receivers - Google Patents

Improvements in wireless telegraph receivers

Info

Publication number
GB177763A
GB177763A GB35058/21A GB3505821A GB177763A GB 177763 A GB177763 A GB 177763A GB 35058/21 A GB35058/21 A GB 35058/21A GB 3505821 A GB3505821 A GB 3505821A GB 177763 A GB177763 A GB 177763A
Authority
GB
United Kingdom
Prior art keywords
valves
atmospherics
effect
circuit
amplifying
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
GB35058/21A
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.)
Societe Francaise Radio Electrique
Original Assignee
Societe Francaise Radio Electrique
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 Societe Francaise Radio Electrique filed Critical Societe Francaise Radio Electrique
Publication of GB177763A publication Critical patent/GB177763A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G11/00—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general
    • H03G11/004—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general using discharge tubes

Landscapes

  • Circuits Of Receivers In General (AREA)

Abstract

177,763. Soc. Franþaise Radio-Electrique. March 30, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Atmospheris, eliminiating or limiting; thermionic valves, arrangements of. - Comprises a system of thermionic valves excited and coupled back to a mistuned wireless receiving circuit in such a way as to reduce the effect of shock-excitation due to atmospherics while amplifying the effect of waves of desired frequency. The receiving-circuit 1, 2, which contains a variable resistance 3 and may be the antenna circuit, is connected through an amplifier 21 to a detector 22. In order to destroy the effect of atmospherics, a further system of valves 4, 5, 6, 7, 8 is connected to the receiving circuit and is tuned to a frequency different from that of the received signals. The transformer 12 is so arranged that the oscillatory currents of the valves 7, 8 are opposite in phase, that of the valve 7 being of slightly greater strength. The algebraic sum of these two currents is led through the back-coupling 13 with the object of neutralizing the atmospherics and amplifying the signal. The valve-system described may alternatively form part of the ordinary re ceiving system.
GB35058/21A 1921-03-30 1921-12-30 Improvements in wireless telegraph receivers Expired GB177763A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR177763X 1921-03-30

Publications (1)

Publication Number Publication Date
GB177763A true GB177763A (en) 1923-02-01

Family

ID=8877898

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35058/21A Expired GB177763A (en) 1921-03-30 1921-12-30 Improvements in wireless telegraph receivers

Country Status (1)

Country Link
GB (1) GB177763A (en)

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