GB444178A - Improvements in or relating to thermionic valve arrangements - Google Patents

Improvements in or relating to thermionic valve arrangements

Info

Publication number
GB444178A
GB444178A GB2359534A GB2359534A GB444178A GB 444178 A GB444178 A GB 444178A GB 2359534 A GB2359534 A GB 2359534A GB 2359534 A GB2359534 A GB 2359534A GB 444178 A GB444178 A GB 444178A
Authority
GB
United Kingdom
Prior art keywords
valve
controlled
carrier frequency
london
relating
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
GB2359534A
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi 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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Priority to GB2359534A priority Critical patent/GB444178A/en
Publication of GB444178A publication Critical patent/GB444178A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/16—Automatic control
    • H03G5/24—Automatic control in frequency-selective amplifiers
    • H03G5/26—Automatic control in frequency-selective amplifiers having discharge tubes

Landscapes

  • Amplifiers (AREA)

Abstract

444,178. Valve circuits for wireless reception. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London, and RUST, N. M., 109, London Road, Chelinsford. Aug. 15, 1934, No. 23595. [Class 40 (v)] In a cascade carrier frequency amplifier gain and selectivity are controlled by the use of reaction obtained by the provision of a circuit L4, C4 resonant to the carrier frequency in the common cathode lead of a pair of valves 1, 2. Reaction may be controlled by shunting the tuned circuit with a variable resistance or by controlling the grid bias of the earlier valve either manually or in dependence on signal strength. The grid of the second valve may be anchored to the cathode or to earth by resistance 18. The amplifier is preferably the intermediate frequency amplifier in a superheterodyne receiver.
GB2359534A 1934-08-15 1934-08-15 Improvements in or relating to thermionic valve arrangements Expired GB444178A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2359534A GB444178A (en) 1934-08-15 1934-08-15 Improvements in or relating to thermionic valve arrangements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2359534A GB444178A (en) 1934-08-15 1934-08-15 Improvements in or relating to thermionic valve arrangements

Publications (1)

Publication Number Publication Date
GB444178A true GB444178A (en) 1936-03-16

Family

ID=10198215

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2359534A Expired GB444178A (en) 1934-08-15 1934-08-15 Improvements in or relating to thermionic valve arrangements

Country Status (1)

Country Link
GB (1) GB444178A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1156858B (en) * 1961-09-07 1963-11-07 Loewe Opta Ag Feedback high-frequency amplifier for receivers for high-frequency electrical oscillations with semiconductor elements, in particular transistors, with an automatically controlled degree of feedback
US5022505A (en) * 1988-10-28 1991-06-11 Atsugi Unisia Corporation One-way clutch for transmitting only rotation of first member to second member

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1156858B (en) * 1961-09-07 1963-11-07 Loewe Opta Ag Feedback high-frequency amplifier for receivers for high-frequency electrical oscillations with semiconductor elements, in particular transistors, with an automatically controlled degree of feedback
US5022505A (en) * 1988-10-28 1991-06-11 Atsugi Unisia Corporation One-way clutch for transmitting only rotation of first member to second member

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