US2297410A - High frequency circuit - Google Patents

High frequency circuit Download PDF

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Publication number
US2297410A
US2297410A US311068A US31106839A US2297410A US 2297410 A US2297410 A US 2297410A US 311068 A US311068 A US 311068A US 31106839 A US31106839 A US 31106839A US 2297410 A US2297410 A US 2297410A
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United States
Prior art keywords
high frequency
cathode
lead
spurious oscillations
self
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Expired - Lifetime
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US311068A
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English (en)
Inventor
Heinecke Erich
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Individual
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Individual
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Publication of US2297410A publication Critical patent/US2297410A/en
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    • 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
    • H03F1/10—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of amplifying elements with multiple electrode connections

Definitions

  • the Fig. 2 is a wiring diagram illustrative to my invention.
  • the cathode K of a thermionic valve is provided with three lead-in conductors, each forming an inductance, as indicated at Z1, Z2 and Z3.
  • these inductances may be tuned to the resonance frequency of spurious oscillations so that a pure ohmic resistance is rendered effective in the inner of the valve between the actual cathode 2 and the grounded point.
  • resistors W1 and W2 may be shunted across these condensers so as to allow matching of the artificially produced ohmic impedance to the specific operating characteristics of the valve itself.
  • the capacities C1 and C2 may be formed by the space capacitances existing within the tube between the separate electrode leads or by the capacities between the connector elements of the valve socket.
  • the magnitudes of these capacitances must be chosen so as to comply with the individual requirements.
  • This invention is by no means limited for use in connection with cathode leads, since it is applicable to all kinds of electrodes which are equipped with more than one single lead-in conductor.
  • a circuit arrangement for high frequency transmitters for short and ultra-short waves including an electron discharge device comprising within an evacuatedcontainer a plurality of electrodes and a lead connected to one of said electrodes having an inherent self-induction which tends to set up spurious oscillations, characterized by the provision of at least one additional lead connected directly to said electrode the space capacity between said first-mentioned lead and said additional lead being so dimensioned as to produce in combination with the inherent selfinduction of the leads a resonant circuit tuned to the frequency of said spurious oscillations, whereby the inherent self-induction effect is translated into a resistive effect of high ohmic resistance for said spurious oscillations.
  • a circuit arrangement for high frequency transmitters for short and ultra-short waves including an electron discharge device comprising within an evacuated container a cathode and a lead connected directly to said cathode having an inherent self-induction which tends to set up spurious oscillations, characterized by the provision of at least one additional lead con- 0 nected to said cathode, the space capacity between said first-mentioned lead and said additional lead being so dimensioned as to produce in combination with the inherent self-induction of the leads a resonant circuit tuned to the frequency of said spurious oscillations, whereby the inherent self-induction efiect is translated into a resistive efiect of high ohmic resistance for said spurious oscillations.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
US311068A 1939-01-14 1939-12-27 High frequency circuit Expired - Lifetime US2297410A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2297410X 1939-01-14

Publications (1)

Publication Number Publication Date
US2297410A true US2297410A (en) 1942-09-29

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ID=7993998

Family Applications (1)

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US311068A Expired - Lifetime US2297410A (en) 1939-01-14 1939-12-27 High frequency circuit

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US (1) US2297410A (enrdf_load_stackoverflow)
BE (1) BE441220A (enrdf_load_stackoverflow)

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BE441220A (enrdf_load_stackoverflow)

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