GB393520A - Improvements in or relating to thermionic amplifiers - Google Patents

Improvements in or relating to thermionic amplifiers

Info

Publication number
GB393520A
GB393520A GB36781/32A GB3678132A GB393520A GB 393520 A GB393520 A GB 393520A GB 36781/32 A GB36781/32 A GB 36781/32A GB 3678132 A GB3678132 A GB 3678132A GB 393520 A GB393520 A GB 393520A
Authority
GB
United Kingdom
Prior art keywords
voltage
impedance
tapped
whilst
dec
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
GB36781/32A
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 GB393520A publication Critical patent/GB393520A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/06—Generation of synchronising signals
    • H04N5/067—Arrangements or circuits at the transmitter end
    • H04N5/0675—Arrangements or circuits at the transmitter end for mixing the synchronising signals with the picture signal or mutually
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H03F1/36—Negative-feedback-circuit arrangements with or without positive feedback in discharge-tube amplifiers

Abstract

393,520. Valve amplifying circuits. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Dec. 29, 1932, No. 36781. Convention date, Dec. 29, 1931. [Class 40 (v).] To compensate for distortion due either to curvature of the valve characteristic, or to variations in the external impedances, in a voltage amplifier coupled to a power amplifier, an out-of-phase voltage is tapped off from one point on the anode impedance and is fed back to the grid, whilst at the same time a suitable grid-bias is derived from a second point on the anode impedance. As shown in Fig. 1, one end of the input transformer, instead of being connected to the cathode as usual, is split and tapped in two places to the output impedance. The tapping through the condenser C feeds back a compensating A.C. voltage, whilst that through the impedance Z provides a D.C. gridbiasing voltage. The two tappings may, as shown in Fig. 2, be taken to separate output impedances arranged in parallel.
GB36781/32A 1931-12-29 1932-12-29 Improvements in or relating to thermionic amplifiers Expired GB393520A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE393520X 1931-12-29

Publications (1)

Publication Number Publication Date
GB393520A true GB393520A (en) 1933-06-08

Family

ID=6391984

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36781/32A Expired GB393520A (en) 1931-12-29 1932-12-29 Improvements in or relating to thermionic amplifiers

Country Status (2)

Country Link
US (1) US2026372A (en)
GB (1) GB393520A (en)

Also Published As

Publication number Publication date
US2026372A (en) 1935-12-31

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