GB434170A - Improvements in or relating to thermionic valves and circuit arrangements incorporating the same - Google Patents

Improvements in or relating to thermionic valves and circuit arrangements incorporating the same

Info

Publication number
GB434170A
GB434170A GB214335A GB214335A GB434170A GB 434170 A GB434170 A GB 434170A GB 214335 A GB214335 A GB 214335A GB 214335 A GB214335 A GB 214335A GB 434170 A GB434170 A GB 434170A
Authority
GB
United Kingdom
Prior art keywords
valve
anode
circuit
grid
screen
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
GB214335A
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.)
JEROME CONRAD SMITH
Original Assignee
JEROME CONRAD SMITH
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 JEROME CONRAD SMITH filed Critical JEROME CONRAD SMITH
Priority to GB214335A priority Critical patent/GB434170A/en
Publication of GB434170A publication Critical patent/GB434170A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/20—Tubes with more than one discharge path; Multiple tubes, e.g. double diode, triode-hexode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/003—Tubes with plural electrode systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

434,170. Valve circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London.- (Smith, J. C.; 4618, Lafayette Avenue, Merchantville, New Jersey, U.S.A.) Feb. 26, 1934, No. 2143/35. Divided out of 427,360. [Class 40 (v)] The invention relates to a valve circuit arrangement employing a valve of the type described in the Specification 427,360, in which energy can be fed back from the auxiliary anode of the valve to the input or control grid circuit. Fig. 2 shows the arrangement of the electrodes of a valve in accordance with Specification 427,360, the screen 30 acting as a normal screen grid for the main anode 27, and also screening the latter from the auxiliary anode 28. Anode 28 is back-coupled to the signal input circuit and its circuit includes a resistance 38 of such value that the mutual conductance between control grid 26 and anode 28 is constant with large variations in the conductance of 26 and anode 27. By varying the voltage of the screen 30 the valve gain can be controlled without varying the regeneration. Fig. 3 shows the use of a modified valve as a detector-oscillator. Here an additional control grid 46 is provided in the electron stream of the main anode 42, the screen electrode 48 being somewhat modified accordingly. Oscillations are generated by back coupling the auxiliary anode 44 and inner grid 43 and these are mixed with the incoming oscillations applied to the grid 46 from circuit 54. The current limiting resis. tance 63 corresponds to 38 of Fig. 2. Specification 408,256 also is referred to.
GB214335A 1934-02-26 1934-02-26 Improvements in or relating to thermionic valves and circuit arrangements incorporating the same Expired GB434170A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB214335A GB434170A (en) 1934-02-26 1934-02-26 Improvements in or relating to thermionic valves and circuit arrangements incorporating the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB214335A GB434170A (en) 1934-02-26 1934-02-26 Improvements in or relating to thermionic valves and circuit arrangements incorporating the same

Publications (1)

Publication Number Publication Date
GB434170A true GB434170A (en) 1935-08-26

Family

ID=9734350

Family Applications (1)

Application Number Title Priority Date Filing Date
GB214335A Expired GB434170A (en) 1934-02-26 1934-02-26 Improvements in or relating to thermionic valves and circuit arrangements incorporating the same

Country Status (1)

Country Link
GB (1) GB434170A (en)

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