US2257274A - Amplifier circuit arrangement for ultra-short waves - Google Patents

Amplifier circuit arrangement for ultra-short waves Download PDF

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Publication number
US2257274A
US2257274A US254536A US25453639A US2257274A US 2257274 A US2257274 A US 2257274A US 254536 A US254536 A US 254536A US 25453639 A US25453639 A US 25453639A US 2257274 A US2257274 A US 2257274A
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US
United States
Prior art keywords
tube
ultra
amplifier circuit
circuit arrangement
short waves
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 - Lifetime
Application number
US254536A
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English (en)
Inventor
Rahn Ernst
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.)
Telefunken AG
Original Assignee
Telefunken AG
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 Telefunken AG filed Critical Telefunken AG
Application granted granted Critical
Publication of US2257274A publication Critical patent/US2257274A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • H03F1/14—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means
    • H03F1/16—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means in discharge-tube amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/02—Manually-operated control
    • H03G5/04—Manually-operated control in untuned amplifiers
    • H03G5/06—Manually-operated control in untuned amplifiers having discharge tubes

Definitions

  • a tuned cathode circuit in addition to the tube equivalent or inactive tube in a bridge scheme there is provided a tuned cathode circuit.
  • Such tuned cathode circuit in itself is known in the prior art for the purpose of neutralization.
  • Fig. 1 illustrates in diagrammatic form an embodiment of the invention using a transmission line for inductance purposes
  • Fig. 2 is a simplified diagrammatic showing of the arrangement shown the capacitances of the dummy or inactive tube.
  • the other reference letters correspond to Fig. 1; It can be seen at once from an examination of Fig. 2 that imperfect neutralization owing to discrepancies as stated between the active and the inactive tube as well as inevitable inductances of the grid leads Ken and XGN can be compensated by the tuning of the impedances KB. and KN. More specifically, voltage across output circuit A will set up voltages across XGR and XGN.
  • the cathode circuits serve to establish an exact bridge balance.
  • the construction and arrangement of the cathode circuits may be chosen at will and is accomplishable in any one of the various ways disclosed in the prior art.
  • the circuit KR and KN may be tuned conjointly or separately, the latter scheme being preferable for in that way all lack of symmetry will be compensated.
  • a first tube having an anode, a cathode and a grid electrode, a second in Fig. 1 used for purposes of explaining the inthe tube capacities, and C'cx, C'AK, and C'cs tube having substantially similar characteristics as said first tube, said second tube having an anode, a cathode and a grid electrode, a connection having inherent inductance between said two grid electrodes, a pair of input terminals across which the energy to be amplified is applied, one of said terminals being connected to a point of fixed potential, the other thereof to an intermediate point of said inherent inductance, an output impedance device connected between said two anodes, said inherent inductance causing in the operation of said amplifier a potential to be impressed upon the first grid which fluctuates in response to potential fluctuation across said output impedance, inductance means consisting of a pair of parallel conductors connecting said two cathodes individually to a point of fixed potential, said parallel conductors having individual adjustments

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microwave Amplifiers (AREA)
US254536A 1938-02-05 1939-02-04 Amplifier circuit arrangement for ultra-short waves Expired - Lifetime US2257274A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE849813X 1938-02-05

Publications (1)

Publication Number Publication Date
US2257274A true US2257274A (en) 1941-09-30

Family

ID=6775958

Family Applications (1)

Application Number Title Priority Date Filing Date
US254536A Expired - Lifetime US2257274A (en) 1938-02-05 1939-02-04 Amplifier circuit arrangement for ultra-short waves

Country Status (3)

Country Link
US (1) US2257274A (fr)
FR (2) FR849813A (fr)
GB (1) GB510226A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2843828A (en) * 1951-10-18 1958-07-15 Avco Mfg Corp Ultra-high-frequency converter for very-high-frequency television receiver

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511362A (en) * 1938-12-20 1950-06-13 Mercier Jean Aircraft variable area wings using landing gear fairings
US2453489A (en) * 1944-08-12 1948-11-09 Gen Electric Ultra high frequency oscillator
US2756334A (en) * 1950-09-28 1956-07-24 Hupp Corp High frequency circuits and oscillators

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2843828A (en) * 1951-10-18 1958-07-15 Avco Mfg Corp Ultra-high-frequency converter for very-high-frequency television receiver

Also Published As

Publication number Publication date
FR849835A (fr) 1939-12-02
FR849813A (fr) 1939-12-02
GB510226A (en) 1939-07-28

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