GB148523A - Improvements in cathode generators - Google Patents

Improvements in cathode generators

Info

Publication number
GB148523A
GB148523A GB2049820A GB2049820A GB148523A GB 148523 A GB148523 A GB 148523A GB 2049820 A GB2049820 A GB 2049820A GB 2049820 A GB2049820 A GB 2049820A GB 148523 A GB148523 A GB 148523A
Authority
GB
United Kingdom
Prior art keywords
circuit
inductances
grid
valve
frequencies
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
GB2049820A
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.)
DRATHLOSE TELEGRAPHIE GmbH
Original Assignee
DRATHLOSE TELEGRAPHIE GmbH
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 DRATHLOSE TELEGRAPHIE GmbH filed Critical DRATHLOSE TELEGRAPHIE GmbH
Publication of GB148523A publication Critical patent/GB148523A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03F1/12—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of attenuating means
    • H03F1/13—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of attenuating means in discharge-tube amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/10—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being vacuum tube

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Electron Sources, Ion Sources (AREA)
  • X-Ray Techniques (AREA)
  • General Induction Heating (AREA)

Abstract

148,523. Ges. f³r Drahtlose Telegraphie. Sept. 9, 1918, [Convention date]. Void [Published under Sect. 91 of the Act]. Electric oscillations, producing.-In a thermionic generator in which oscillations of either one of two frequencies may be produced, cscillation at the undesired frequency is prevented bv the interposition of an auxiliary condenser, inductance or resistance, or a separate circuit syntonized to the undesired frequency. Fig. 3 shows a typical arrangement, the anode and grid circuits of the thermionic valve 1 being coupled to the oscillatory circuit 17, 9, by means of the inductances 3 and 4 respectively. The valve may oscillate at either of two frequencies according to whether the circuits formed by the inductances 3 and 4 with the parallel anode-filament and gridfilament capacities, act resultantly as inductances or as capacities. To suppress one of these frequencies, the reaction between the grid and anode circuits of the valve is so arranged that the valve will oscillate more easily at one of these frequencies than the other. In the arrangement shown, reaction between the grid and anode circuits is prevented at the higher frequency by the insertion of a parallel condenser 14 or a series inductance 15 in the grid circuit. The same result is obtained by the interposition of a separate circuit syntonized to the undesired frequency, which circuit offers a high impedance to variations of the undesired frequency. The invention may be applied to other circuit arrangements in a similar manner, having regard to the frequency to be suppressed and to the effects of interposed inductances and capacities.
GB2049820A 1918-09-10 1920-07-10 Improvements in cathode generators Expired GB148523A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE348911T 1918-09-10
DEG47314D DE393047C (en) 1918-09-10 1918-10-26 Switching method to suppress unwanted vibrations when using several cathode generators connected in parallel

Publications (1)

Publication Number Publication Date
GB148523A true GB148523A (en) 1921-10-10

Family

ID=33480538

Family Applications (4)

Application Number Title Priority Date Filing Date
GB1990620A Expired GB147854A (en) 1918-09-10 1920-07-09 Improvements in cathode tube generators
GB2040020A Expired GB148445A (en) 1918-09-10 1920-07-10 Improvements in thermionic tube electromagnetic wave generating arrangements
GB2049820A Expired GB148523A (en) 1918-09-10 1920-07-10 Improvements in cathode generators
GB2040220A Expired GB148447A (en) 1918-09-10 1920-07-10 Improvements in thermionic tube electromagnetic wave generating arrangements

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB1990620A Expired GB147854A (en) 1918-09-10 1920-07-09 Improvements in cathode tube generators
GB2040020A Expired GB148445A (en) 1918-09-10 1920-07-10 Improvements in thermionic tube electromagnetic wave generating arrangements

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB2040220A Expired GB148447A (en) 1918-09-10 1920-07-10 Improvements in thermionic tube electromagnetic wave generating arrangements

Country Status (3)

Country Link
DE (2) DE348911C (en)
FR (1) FR519268A (en)
GB (4) GB147854A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2549553A (en) * 1939-01-27 1951-04-17 Wigan Edmund Ramsay Thermionic valve oscillator and amplifier

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2663799A (en) * 1950-05-27 1953-12-22 Zenith Radio Corp Ultrahigh-frequency oscillation generator
DE1056200B (en) * 1956-10-13 1959-04-30 Rohde & Schwarz High frequency amplifier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2549553A (en) * 1939-01-27 1951-04-17 Wigan Edmund Ramsay Thermionic valve oscillator and amplifier

Also Published As

Publication number Publication date
GB147854A (en) 1921-11-09
GB148445A (en) 1921-12-12
DE393047C (en) 1924-03-28
FR519268A (en) 1921-06-07
GB148447A (en) 1921-12-12
DE348911C (en) 1922-02-21

Similar Documents

Publication Publication Date Title
US1624537A (en) Oscillation generator
GB148523A (en) Improvements in cathode generators
US1973303A (en) Oscillation generator
US1982916A (en) Transmitter
US2254739A (en) Thermionic valve oscillation generator
US2007662A (en) Valve transmitter for short waves
US2251025A (en) Oscillation producing means
US1983848A (en) Short wave oscillation generator
US1980581A (en) Crystal controlled oscillator
US2053787A (en) Thermionic oscillation generator
US1784857A (en) Electron-tube circuits
GB262115A (en) Improvements in thermionic valve generators and circuit arrangements therefor
US1751232A (en) Vacuum-tube circuits
US1486505A (en) Stabilizing oscillation generators
US1995164A (en) Oscillation generation
US1965641A (en) Frequency multiplication
US1697328A (en) Oscillation circuit
GB392425A (en) Improvements in or relating to very short wave electrical oscillation generating arrangements
GB599424A (en) Ultra-high-frequency oscillation generator
GB310043A (en) Improvements in or relating to high frequency thermionic generators
US1637924A (en) Thermionic valve circuits
GB173220A (en) Improvements relating to the production of high-frequency electric oscillations
US2004171A (en) Oscillation generator
US1649122A (en) Oscillation generator
US1400235A (en) Method of and means for producing alternating currents