GB746109A - Improvements in or relating to wide-band amplifiers having a step-shaped frequency response curve - Google Patents

Improvements in or relating to wide-band amplifiers having a step-shaped frequency response curve

Info

Publication number
GB746109A
GB746109A GB2675/54A GB267554A GB746109A GB 746109 A GB746109 A GB 746109A GB 2675/54 A GB2675/54 A GB 2675/54A GB 267554 A GB267554 A GB 267554A GB 746109 A GB746109 A GB 746109A
Authority
GB
United Kingdom
Prior art keywords
wide
jan
relating
shaped frequency
frequency response
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
GB2675/54A
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
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 filed Critical Telefunken AG
Publication of GB746109A publication Critical patent/GB746109A/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
    • H03G5/02—Manually-operated control
    • H03G5/04—Manually-operated control in untuned amplifiers
    • H03G5/06—Manually-operated control in untuned amplifiers having discharge tubes
    • H03G5/08—Manually-operated control in untuned amplifiers having discharge tubes incorporating negative feedback

Landscapes

  • Picture Signal Circuits (AREA)

Abstract

746,109. Valve amplifiers. TELEFUNKEN GES., [formerly TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE]. Jan. 28, 1954 [Jan. 28, 1953], No. 2675/54. Class 40 (6). A wide-band amplifier is given a step-shaped frequency characteristic by means of negative feedback, which is effective only in the lowfrequency range. In a video amplifier the desired result is obtained by means of an impedance network in the cathode circuit, comprising series-connected resistor 8 and inductance 9, together with a shunt condenser 10. Another embodiment giving a sharper step, Fig. 5 (not shown) utilizes a three-section lowpass filter terminated at the end remote from the valve. The filter elements may be made variable so as to adjust the frequency and/or height of the step. The arrangement is more particularly intended for use in a television receiver of the vestigial side-band type.
GB2675/54A 1953-01-28 1954-01-28 Improvements in or relating to wide-band amplifiers having a step-shaped frequency response curve Expired GB746109A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE746109X 1953-01-28

Publications (1)

Publication Number Publication Date
GB746109A true GB746109A (en) 1956-03-07

Family

ID=6648309

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2675/54A Expired GB746109A (en) 1953-01-28 1954-01-28 Improvements in or relating to wide-band amplifiers having a step-shaped frequency response curve

Country Status (1)

Country Link
GB (1) GB746109A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3407360A (en) * 1966-08-10 1968-10-22 Electrohome Ltd Networks for selectively amplifying certain frequencies more so than other frequencies
EP1690336A1 (en) * 2003-09-30 2006-08-16 Jong-Ryul Lee Input/output signals preserver circuit of amplification circuits

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3407360A (en) * 1966-08-10 1968-10-22 Electrohome Ltd Networks for selectively amplifying certain frequencies more so than other frequencies
EP1690336A1 (en) * 2003-09-30 2006-08-16 Jong-Ryul Lee Input/output signals preserver circuit of amplification circuits
EP1690336A4 (en) * 2003-09-30 2008-05-21 Jong-Ryul Lee Input/output signals preserver circuit of amplification circuits

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