GB468008A - Improvements in or relating to electrical circuit arrangements embodying automatic gain control means - Google Patents

Improvements in or relating to electrical circuit arrangements embodying automatic gain control means

Info

Publication number
GB468008A
GB468008A GB13366/36A GB1336636A GB468008A GB 468008 A GB468008 A GB 468008A GB 13366/36 A GB13366/36 A GB 13366/36A GB 1336636 A GB1336636 A GB 1336636A GB 468008 A GB468008 A GB 468008A
Authority
GB
United Kingdom
Prior art keywords
valve
grid
control
gain control
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
GB13366/36A
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Publication of GB468008A publication Critical patent/GB468008A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/02—Volume compression or expansion in amplifiers having discharge tubes

Landscapes

  • Control Of Amplification And Gain Control (AREA)

Abstract

468,008. Valve amplifying circuits; thermionic valves. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. May 11, 1936, No. 13366. Convention date, May 9, 1935. [Classes 39 (i) and 40 (v)] Volume expansion or compression of the signals applied from a source E, Fig. 1, to an amplifying valve R1 is produced by a control voltage applied to an auxiliary grid arranged between two screen-grids in the valve R1 and derived from a rectifier R3 fed with signal energy from an auxiliary amplifier R2. The manual volume control r<1> controls the input to both valves R1, R2 so that the amount of automatic control varies with the overall amplification. An independent control r2 of the automatic regulation is provided. In a modification, Fig. 2, the valve R acts in a dual capacity, the second grid providing the amplified signals for the gain control rectifier G the output from which controls the bias of the fourth grid. In this embodiment the second " grid " may comprise rods S, Fig. 3, arranged in the electron shadow of the supports of the first grid G1. The valve may also be provided with a further screen and suppressor grids.
GB13366/36A 1935-05-09 1936-05-11 Improvements in or relating to electrical circuit arrangements embodying automatic gain control means Expired GB468008A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE468008X 1935-05-09

Publications (1)

Publication Number Publication Date
GB468008A true GB468008A (en) 1937-06-28

Family

ID=6540789

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13366/36A Expired GB468008A (en) 1935-05-09 1936-05-11 Improvements in or relating to electrical circuit arrangements embodying automatic gain control means

Country Status (1)

Country Link
GB (1) GB468008A (en)

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