GB305940A - Improvements relating to the supply of operating current to electron discharge devices - Google Patents

Improvements relating to the supply of operating current to electron discharge devices

Info

Publication number
GB305940A
GB305940A GB4545/29A GB454529A GB305940A GB 305940 A GB305940 A GB 305940A GB 4545/29 A GB4545/29 A GB 4545/29A GB 454529 A GB454529 A GB 454529A GB 305940 A GB305940 A GB 305940A
Authority
GB
United Kingdom
Prior art keywords
grid
plate
ripple voltage
tapping
tap
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
GB4545/29A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB305940A publication Critical patent/GB305940A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference
    • H04B15/005—Reducing noise, e.g. humm, from the supply

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Electron Beam Exposure (AREA)
  • Electron Sources, Ion Sources (AREA)

Abstract

305,940. British Thomson-Houston Co., Ltd., (Assignees of Kellogg, E. W.). Feb. 11, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Thermionic amplifiers.-Hum is eliminated from a thermionic amplifier supplied with current from a fluctuating source, by applying the ripple voltage in opposite phase to the grid and the plate, and in such amplitude as to balance out in its effect on the plate current. Filament voltage for the valve 4 is taken from adjacent tappings 12 on the resistance 2 connected across the supply source 1. Plate voltage is taken from a tapping 8 on the positive side of the filament taps, and grid bias is taken from a tap 21 through a high resistance 20. Ripple voltage is applied to the grid from a tapping 23 through a large condenser 22, and the tapping 23 is so chosen that the ripple voltage thus applied to the grid just neutralizes the ripple voltage applied by the tap 8 to the plate. Similar connections are made for the preceding valve 3. The ratio of the distances of the points 8, 23 from the filament tap 12 should be equal to the amplification factor of the valve.
GB4545/29A 1928-02-11 1929-02-11 Improvements relating to the supply of operating current to electron discharge devices Expired GB305940A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US37327XA 1928-02-11 1928-02-11

Publications (1)

Publication Number Publication Date
GB305940A true GB305940A (en) 1929-12-12

Family

ID=21707312

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4545/29A Expired GB305940A (en) 1928-02-11 1929-02-11 Improvements relating to the supply of operating current to electron discharge devices

Country Status (1)

Country Link
GB (1) GB305940A (en)

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