GB530319A - Improvements in and relating to wide-band amplifiers - Google Patents

Improvements in and relating to wide-band amplifiers

Info

Publication number
GB530319A
GB530319A GB16804/39A GB1680439A GB530319A GB 530319 A GB530319 A GB 530319A GB 16804/39 A GB16804/39 A GB 16804/39A GB 1680439 A GB1680439 A GB 1680439A GB 530319 A GB530319 A GB 530319A
Authority
GB
United Kingdom
Prior art keywords
anode
screen
valve
wide
grid
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
GB16804/39A
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.)
Philco Radio and Television Corp
Original Assignee
Philco Radio and Television Corp
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 Philco Radio and Television Corp filed Critical Philco Radio and Television Corp
Priority to GB16804/39A priority Critical patent/GB530319A/en
Priority to US337508A priority patent/US2289291A/en
Publication of GB530319A publication Critical patent/GB530319A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03F1/42—Modifications of amplifiers to extend the bandwidth
    • H03F1/48—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers
    • H03F1/50—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers with tubes only

Abstract

530,319. Valve amplifying circuits; television. THORNTON, A. A. (Philco Radio & Television Corporation). June 8, 1939, No. 16804. [Classes 40 (iii) and 40 (v)] A wide-band amplifier comprises a valve with two output electrodes to which load impedances are connected such that one provides a wideband output and the other a narrow-band overlapping the wide band, the arrangement being particularly adapted for the separation of synchronizing from picture signals in a television receiver. As shown the valve 2 is a pentode, with the picture signal output taken from its anode, and the synchronizing signals from its screengrid. The anode load comprises a resistance 3 and an inductance 4 which resonates with the anode capacity towards the upper limit of the required video frequency range. The screen-grid load comprises a larger resistance 5 and a larger inductance 6 which resonates with the screengrid capacity at a much lower frequency. The arrangement is such that the video frequency response in the anode circuit is reduced at low frequencies by the robbing action of the screen grid. The screen-grid voltage is supplied from the anode voltage source through a filter 7, 8 which eliminates low frequency ripple in the supply.
GB16804/39A 1939-06-08 1939-06-08 Improvements in and relating to wide-band amplifiers Expired GB530319A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB16804/39A GB530319A (en) 1939-06-08 1939-06-08 Improvements in and relating to wide-band amplifiers
US337508A US2289291A (en) 1939-06-08 1940-05-27 Wide-band amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB16804/39A GB530319A (en) 1939-06-08 1939-06-08 Improvements in and relating to wide-band amplifiers

Publications (1)

Publication Number Publication Date
GB530319A true GB530319A (en) 1940-12-10

Family

ID=10083955

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16804/39A Expired GB530319A (en) 1939-06-08 1939-06-08 Improvements in and relating to wide-band amplifiers

Country Status (2)

Country Link
US (1) US2289291A (en)
GB (1) GB530319A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE498896A (en) * 1949-10-29
NL87350C (en) * 1954-10-08
US2894059A (en) * 1954-12-16 1959-07-07 Sylvania Electric Prod Screen grid, color burst separation circuit
US2894061A (en) * 1956-05-01 1959-07-07 Rca Corp Color television apparatus

Also Published As

Publication number Publication date
US2289291A (en) 1942-07-07

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