GB592259A - Improvements in or relating to thermionic amplifiers and modulators - Google Patents

Improvements in or relating to thermionic amplifiers and modulators

Info

Publication number
GB592259A
GB592259A GB18162/43A GB1816243A GB592259A GB 592259 A GB592259 A GB 592259A GB 18162/43 A GB18162/43 A GB 18162/43A GB 1816243 A GB1816243 A GB 1816243A GB 592259 A GB592259 A GB 592259A
Authority
GB
United Kingdom
Prior art keywords
input
modulators
output
pairs
push
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
GB18162/43A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB592259A publication Critical patent/GB592259A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/16—Amplitude modulation by means of discharge device having at least three electrodes
    • H03C1/18—Amplitude modulation by means of discharge device having at least three electrodes carrier applied to control grid
    • H03C1/20—Amplitude modulation by means of discharge device having at least three electrodes carrier applied to control grid modulating signal applied to anode
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C7/00—Modulating electromagnetic waves
    • H03C7/02—Modulating electromagnetic waves in transmission lines, waveguides, cavity resonators or radiation fields of antennas
    • 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
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/04—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in discharge-tube amplifiers
    • H03F1/06—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in discharge-tube amplifiers to raise the efficiency of amplifying modulated radio frequency waves; to raise the efficiency of amplifiers acting also as modulators
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/54—Amplifiers using transit-time effect in tubes or semiconductor devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Amplitude Modulation (AREA)
  • Transmitters (AREA)
  • Amplifiers (AREA)

Abstract

592,259. Thermionic amplifiers and modulators. STANDARD TELEPHONES & CABLES, Ltd. Nov. 2, 1943, No. 18162. Convention date, May 18, 1942. [Class 40 (v)] An amplifier, Fig. 1 (not shown), comprises a number of push-pull pairs with their input and output tank circuits connected at #/2 intervals to transmission lines to which the input and output circuits are coupled at any point. Each pair has its own D.C. sources. A modulator comprises two push-pull pairs having their input and output tank circuits connected by #/2 lengths of transmission line, the conductors of one of which are transposed so that a carrier applied at 94 produces no current on the output circuit 110 except when the pairs are unbalanced by the application of a modulating current at 106. As an alternative, the modulating wave may be applied to the grid circuits.
GB18162/43A 1942-05-18 1943-11-02 Improvements in or relating to thermionic amplifiers and modulators Expired GB592259A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US443391A US2340352A (en) 1942-05-18 1942-05-18 Radio circuit

Publications (1)

Publication Number Publication Date
GB592259A true GB592259A (en) 1947-09-12

Family

ID=23760608

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18162/43A Expired GB592259A (en) 1942-05-18 1943-11-02 Improvements in or relating to thermionic amplifiers and modulators

Country Status (2)

Country Link
US (1) US2340352A (en)
GB (1) GB592259A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2485559A (en) * 1945-04-12 1949-10-25 Farnsworth Res Corp Ultra high frequency amplifier system
US2546837A (en) * 1947-08-21 1951-03-27 Rca Corp Paralleled amplifier circuits

Also Published As

Publication number Publication date
US2340352A (en) 1944-02-01

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