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GB417036A - Improvements in and relating to electric discharge devices - Google Patents

Improvements in and relating to electric discharge devices

Info

Publication number
GB417036A
GB417036A GB11695/34A GB1169534A GB417036A GB 417036 A GB417036 A GB 417036A GB 11695/34 A GB11695/34 A GB 11695/34A GB 1169534 A GB1169534 A GB 1169534A GB 417036 A GB417036 A GB 417036A
Authority
GB
United Kingdom
Prior art keywords
transformer
circuit
cathode
valve
condensers
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
GB11695/34A
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.)
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
Priority claimed from US654421A external-priority patent/US2323250A/en
Application filed by British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB417036A publication Critical patent/GB417036A/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)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Amplifiers (AREA)

Abstract

417,036. Valve generating and amplifying circuits. BRITISH THOMSONHOUSTON CO., Ltd., Crown House, Aldwych, London. April 18, 1934, No. 11695. Convention date, April 18, 1933. [Class 40 (v).] In a valve circuit of the kind in which the cathode is heated by alternating current but is not grounded as regards the signal or operating frequency, means are provided in the primary and secondary circuits of the heating transformer for preventing variations in the transformer constants from affecting the operation of the circuit. As shown, an oscillation generator comprises a tetrode valve 1 with inner and outer grids 4, 3 and cathode connected to a tuned circuit 5 to set up oscillation therein. The anode 2 is coupled to the load or output circuit. The outer grid 3 is grounded at 8 as regards the operating frequency, and the cathode is oscillatory. Condensers 10 are connected across the cathode and the two halves of the secondary coil of the supply transformer 12, a condenser 19 across the primary of the transformer, and condensers 20, 21 between each end of the primary coil and the adjacent end of the secondary coil. All these elements are at oscillatory voltage, whilst the supply source 11 is grounded by two condensers 26 and is isolated from the rest of the circuit by chokes 22. These need only be of small current-carrying capacity as they are on the high-voltage side of the transformer 12. Thermostatic arrangements 24, 25 may be provided in association with the casing 23. In a modification (Fig. 2, not shown), a triode oscillating valve is employed.
GB11695/34A 1933-01-31 1934-04-18 Improvements in and relating to electric discharge devices Expired GB417036A (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
GB417036A true GB417036A (en) 1934-09-26

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 (2)

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

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
DE740693C (en) * 1937-02-12 1943-10-27 Philips Patentverwaltung Electron tubes with at least four electrodes between the cathode and anode, in particular mixing tubes
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)
DE755065C (en) 1953-04-09
FR767812A (en) 1934-07-24
GB437804A (en) 1935-10-31
NL64168C (en)
GB437726A (en) 1935-10-31

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