GB437726A - Improvements in or relating to radio signalling systems - Google Patents

Improvements in or relating to radio signalling systems

Info

Publication number
GB437726A
GB437726A GB3277/34A GB327734A GB437726A GB 437726 A GB437726 A GB 437726A GB 3277/34 A GB3277/34 A GB 3277/34A GB 327734 A GB327734 A GB 327734A GB 437726 A GB437726 A GB 437726A
Authority
GB
United Kingdom
Prior art keywords
oscillator
anode
grid
cancelled
arrangement
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
GB3277/34A
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.)
Marconis Wireless Telegraph Co Ltd
Original Assignee
Marconis Wireless Telegraph 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
Priority claimed from US654421A external-priority patent/US2323250A/en
Application filed by Marconis Wireless Telegraph Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB437726A publication Critical patent/GB437726A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/02—Tubes with a single discharge path
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/06—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes
    • H03D7/10—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between different pairs of electrodes
    • 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
    • H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/04—Constructional details for maintaining temperature constant

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electrotherapy Devices (AREA)
  • Amplifiers (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

437,726. Valve circuits for wireless reception and modulating. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London.- (Assignees of Smith, J. C. ; 4618, Layayette Avenue, Merchantville, New Jersey, U.S.A.) Jan. 31, 1934, No. 3277. Convention date, Jan. 31, 1933. [Class 40 (v)] A mixing valve for use in a supersonic heterodyne or a homodyne receiver or as a modulator consists of signal input and oscillator sections, both comprising a grid and an anode and located in the electron stream from a cathode, with screening between the sections and between the control grid and anode of the signal section. The Figure shows the oscillator section next to the cathode, the circuit of the grid 52 being tuned and containing a resistance 86. Gain control is obtained by varying the bias of the signal input grid 66 by manual means or automatically in accordance with signal strength. The grid 66 may be of the variable-mu type while the oscillator anode 67 may extend over only a small part of the electron stream and may be in the form of one or more rods. The Specification as open to inspection under Sect. 91 comprises an arrangement in which two control grids separated by a screen are provided and fed with oscillations from . external sources, Fig. 6 (Cancelled) (not shown). Fig. 5 (Cancelled) shows an arrangement in which the oscillator section is next to the anode and.Fig. 7 (Cancelled) an arrangement in which the oscillator anode 67 serves as the screen between the input and oscillator sections. In the latter a volume control valve 75 is provided fed with signal potentials through terminals 82 and biassed to bottom bend. This subject-matter does not appear in the Specification as accepted.
GB3277/34A 1933-01-31 1934-01-31 Improvements in or relating to radio signalling systems Expired GB437726A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US654421A US2323250A (en) 1933-01-31 1933-01-31 Signaling system
US417036XA 1933-04-18 1933-04-18

Publications (1)

Publication Number Publication Date
GB437726A true GB437726A (en) 1935-10-31

Family

ID=31890686

Family Applications (3)

Application Number Title Priority Date Filing Date
GB21769/35A Expired GB437804A (en) 1933-01-31 1934-01-31 Improvements in or relating to thermionic valves for use in radio signalling systems
GB3277/34A Expired GB437726A (en) 1933-01-31 1934-01-31 Improvements in or relating to radio signalling systems
GB11695/34A Expired GB417036A (en) 1933-01-31 1934-04-18 Improvements in and relating to electric discharge devices

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB21769/35A Expired GB437804A (en) 1933-01-31 1934-01-31 Improvements in or relating to thermionic valves for use in radio signalling systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB11695/34A Expired GB417036A (en) 1933-01-31 1934-04-18 Improvements in and relating to electric discharge devices

Country Status (5)

Country Link
BE (1) BE401193A (en)
DE (1) DE755065C (en)
FR (1) FR767812A (en)
GB (3) GB437804A (en)
NL (1) NL64168C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2203221A (en) * 1937-02-12 1940-06-04 Rca Corp Electron discharge device
DE742591C (en) * 1937-02-13 1943-12-08 Philips Patentverwaltung Electron tube which, in addition to the cathode, at least one control grid and anode, has at least one acceleration electrode located between the cathode and a control grid
DE750155C (en) * 1937-04-28 1944-12-18 Rca Corp Mixing tubes with an inner control grid and an outer oscillator grid
DE744296C (en) * 1937-12-07 1944-01-13 Elek Citaets Ag Electron tubes
NL66625C (en) * 1944-11-03

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR668535A (en) * 1928-05-08 1929-11-04 Etablissements Ducretet Soc D Frequency changer device, in particular for radio signaling
FR670929A (en) * 1928-07-05 1929-12-06 Thomson Houston Comp Francaise Improvements to frequency changer amplifiers
FR673718A (en) * 1928-08-25 1930-01-18 Radiomodulation by lamps with low internal capacity
FR669267A (en) * 1929-02-07 1929-11-14 Improvement in regulator assemblies applied to frequency changers and others
FR670731A (en) * 1929-03-04 1929-12-04 Radio Sonore Et Hippolyte Shap Method and arrangements for implementing the modulation reception method
FR709196A (en) * 1930-04-11 1931-08-04 Multiple combination station device

Also Published As

Publication number Publication date
BE401193A (en)
FR767812A (en) 1934-07-24
DE755065C (en) 1953-04-09
GB417036A (en) 1934-09-26
NL64168C (en)
GB437804A (en) 1935-10-31

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