GB360679A - Improvements in coupling arrangements comprising amplifying tubes - Google Patents

Improvements in coupling arrangements comprising amplifying tubes

Info

Publication number
GB360679A
GB360679A GB34083/30A GB3408330A GB360679A GB 360679 A GB360679 A GB 360679A GB 34083/30 A GB34083/30 A GB 34083/30A GB 3408330 A GB3408330 A GB 3408330A GB 360679 A GB360679 A GB 360679A
Authority
GB
United Kingdom
Prior art keywords
cathode
valves
class
heated
amplifier
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
GB34083/30A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB360679A publication Critical patent/GB360679A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)

Abstract

360,679. Valve amplifying circuits. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. Nov. 12, 1930, No. 34083. Convention date, May 19, [Class 40 (v).] In order to eliminate disturbances due to local induction, "pick-up," or reaction, when using a thermionic amplifier of the indirectly-heated type, the ordinary circuit arrangement shown in the Figure is modified by omitting the earth connection 7 from the cathode 4. This limits the coupling between the cathode and the current-source to the small capacity existing between the heating element 5 and the cathode 4, which has a high impedance to any low-frequency disturbance. The arrangement is advantageous when applied to the valves of a preliminary amplifier, or to the first valves of a cascade series, heated from an alternating or direct current source. Specifications 219,705, 338,107, [both in Class 40 (v), Wireless signalling &c.], and 340,399, [Group XXXII], are referred to.
GB34083/30A 1930-05-19 1930-11-12 Improvements in coupling arrangements comprising amplifying tubes Expired GB360679A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT360679X 1930-05-19

Publications (1)

Publication Number Publication Date
GB360679A true GB360679A (en) 1931-11-12

Family

ID=3672748

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34083/30A Expired GB360679A (en) 1930-05-19 1930-11-12 Improvements in coupling arrangements comprising amplifying tubes

Country Status (1)

Country Link
GB (1) GB360679A (en)

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