GB286578A - Improvements in or relating to thermionic valve circuit systems - Google Patents

Improvements in or relating to thermionic valve circuit systems

Info

Publication number
GB286578A
GB286578A GB3069927A GB3069927A GB286578A GB 286578 A GB286578 A GB 286578A GB 3069927 A GB3069927 A GB 3069927A GB 3069927 A GB3069927 A GB 3069927A GB 286578 A GB286578 A GB 286578A
Authority
GB
United Kingdom
Prior art keywords
plates
coil
plate
grid
overlap
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
GB3069927A
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.)
HAROLD HOPWOOD
Cutler Hammer Europe Ltd
Original Assignee
HAROLD HOPWOOD
Igranic Electric 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 HAROLD HOPWOOD, Igranic Electric Co Ltd filed Critical HAROLD HOPWOOD
Priority to GB3069927A priority Critical patent/GB286578A/en
Publication of GB286578A publication Critical patent/GB286578A/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
    • H04B1/16—Circuits
    • H04B1/163—Special arrangements for the reduction of the damping of resonant circuits of receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)

Abstract

286,578. Igranic Electric Co., Ltd., and Hopwood, H. Nov. 15, 1927. Thermionic amplifiers and detectors. - The degree of magnetic coupling between fixed coils r, g in the plate and grid circuits of an amplifier v is controlled by means of a three-plate condenser c<1>, c<2>, c<3> in such a way as not to affect the initial tuning of the grid circuit. The condenser plates c<3> moves relatively to the fixed plates c<1>, c<2> in such a way that as the overlap between c<2> and c<1> increases that between c<3> and c<2> decreases and vice versa. The overall capacity between the plates therefore remains constant, though the amount of current flowing through the coil r varies in accordance with the overlap between the plates c<2>, c<3>. The shunt capacity between plate and filament serves to byepass high-frequency currents from the lowfrequency coupling-transformer. The coil r may be an extension of the grid coil g.
GB3069927A 1927-11-15 1927-11-15 Improvements in or relating to thermionic valve circuit systems Expired GB286578A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3069927A GB286578A (en) 1927-11-15 1927-11-15 Improvements in or relating to thermionic valve circuit systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3069927A GB286578A (en) 1927-11-15 1927-11-15 Improvements in or relating to thermionic valve circuit systems

Publications (1)

Publication Number Publication Date
GB286578A true GB286578A (en) 1928-03-08

Family

ID=10311737

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3069927A Expired GB286578A (en) 1927-11-15 1927-11-15 Improvements in or relating to thermionic valve circuit systems

Country Status (1)

Country Link
GB (1) GB286578A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE882419C (en) * 1938-01-20 1953-07-09 Siemens Ag Amplifier with negative feedback

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE882419C (en) * 1938-01-20 1953-07-09 Siemens Ag Amplifier with negative feedback

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