US2231155A - Stabilized-frequency oscillator arrangement - Google Patents

Stabilized-frequency oscillator arrangement Download PDF

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Publication number
US2231155A
US2231155A US209202A US20920238A US2231155A US 2231155 A US2231155 A US 2231155A US 209202 A US209202 A US 209202A US 20920238 A US20920238 A US 20920238A US 2231155 A US2231155 A US 2231155A
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United States
Prior art keywords
voltage
grid
circuit
excitation
frequency
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Expired - Lifetime
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US209202A
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English (en)
Inventor
Chireix Henri
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Thales SA
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CSF Compagnie Generale de Telegraphie sans Fil SA
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    • 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

Definitions

  • the said The invention is based upon an appreciation point is connected through a capacity of large of the fact that, if in addition to the normal value 8; and his will brin a out no han e i excitation on the control grid (which excitation the properties of the circuit organization.
  • the excitation may (Suppressor grid) o e p ntode- Vary only small amount, t t effect never- 'It will be noted that the circuit of the said grid theless can be made very variable if a slight varicomprises in addition to t e c upling coil IS, the
  • the first grid and the coupled to a d on th th r hand, t p t plate of the vacuum tube are respectively coupled tial between the center point B of the small into the oscillatory circuit 2, 3 by means of conductance 9 and the point of junction of one of 50 densersfi and 6.
  • the condenser 6, in effect, is a the large inductances 9' or 9" and the condenser blocking condenser.
  • a plate blocking inductance l 0, labeled 0 or D (or the potential in inductance coil 1 is provided between the plate of the vacuum l3 coupled to the large inductance 9").
  • the battery l4 alone will govern ing potential as shown. 1 the biasing of the suppressor grid, and the ex- 55 citation in quadrature set up at it has a definite effect.
  • vectors BC and BD When detuned, vectors BC and BD become BC and BD', they continue to be equal and opposed, and their amplitude changes very little in regard to vectors'BC and BD.
  • the resultants AC and AD become clearly different, and the rectified potentials applied to the terminals of resistances a and b are proportional to the amplitudes of said vectors which explains a resulting term which modifies the continuous bias on the suppressor grid.
  • Fig. 2 the same reference letters are used for identical elements as in Fig. 1.
  • the voltage across the terminals of I3 is amplified by the variablet tube it instead of being applied directly to a control electrode of tube I.
  • the amplified potential serves to control the pentode by connecting the plate of tube IS with the screen of tube l and a suitable positive potential through a blocking inductance coil I1.
  • An oscillation generator comprising an electron tube having a cathode, an anode, first and second grid electrodes, a tuned circuit coupled to said cathode, anode and first grid electrode, and means for producing an oscillatory voltage in said tuned circuit, said means comprising means for applying an excitation voltage derived from said tuned circuit to said first grid electrode of the tube for sustaining oscillations, means for applying a second excitation voltage derived from said tuned circuit to said second grid electrode of the tube, means for dephasing said second excitation voltage substantially in quadrature with respect to said first excitation voltage, means for combining voltages proportional to said two excitation voltages to produce two direct current voltages, one responsive to the vector sum and one responsive to the vector difference of said proportional voltages, and means for applying the resultant of said two direct current voltages to said second grid, whereby the frequency of said tuned circuit is stabilized.
  • An oscillation generator comprising an electron tube having a cathode, an anode, first and second grid electrodes, a main tuned circuit coupled to said cathode and one of the said grid electrodes, an auxiliary tuned circuit having two sides and coupled with said main tuned circuit so as to be driven thereby, means for combining voltage from the main tuned circuit and voltage on one side of the auxiliary tuned circuit, and means for rectifying said combined voltage,
  • An oscillation generator comprising an electron discharge device having a cathode, an anode and a grid, means for producing oscillations including sources of potential for energizing said electrodes and a tuned circuit composed of inductance and capacitance, means for deriving from said tuned circuit a voltage which increases with frequency and another voltage which decreases with increase in frequency, separate means for rectifying said voltages, an apertured electrode in said tube for affecting the frequency of said oscillations, and means for combining the rectified voltages in opposition to each other and for applying the resultant to said apertured electrode, whereby the frequency of oscillations produced by said generator is stabilized without dependence upon amplitude Variations.
  • An oscillation generator comprising an electron tube having a cathode, anode, a control grid, a screen grid and a suppressor grid, a tuned circuit coupled to said anode, cathode and control grid, means for producing an oscillatory voltage in said tuned circuit and for applying to the control grid an excitation voltage derived from said tuned circuit for maintaining oscillations, biasing means in said suppressor grid circuit, means for applying a second excitation voltage to said suppressor grid circuit means for dephasing said second excitation voltage substantially in quadrature with respect to said first excitation voltage, means for combining voltages proportional to said excitation voltages to produce two direct current voltages, one responsive to the vector sum and one responsive to the vector difference of said proportional voltages, and means for applying the resultant of said two direct current voltages to said suppressor grid, whereby the frequency of said tuned circuit is stabilized.
  • An oscillation generator comprising an electron tube having a cathode, an anode, a control grid and a screen grid, a tuned circuit coupled to said cathode and control grid, means for producing an oscillatory Voltage in said tuned circuit and for applying to the control grid an excitation voltage derived from said tuned circuit for maintaining oscillations, biasing means in said screen grid circuit, means for applying a second excitation voltage to said screen grid circuit, means for dephasing said second excitation voltage substantially in quadrature with respect to said first excitation voltage, and means for combining voltages proportional to said two excitation voltages to produce two direct current voltages, one responsive to the vector sum and one responsive to the vector difierenc-e of said proportional voltages, and means for applying the resultant of said two direct current voltages to said screen grid, whereby the frequency of said tuned circuit is stabilized.
  • An oscillation generator comprising an electron tube having a cathode, an anode, a control grid and a screen grid, a tuned circuit coupled to the cathode and control grid of said tube, means for producing an oscillatory voltage in said tuned circuit and applying to the control grid a voltage excitation in dependence upon the voltage of said tun-ed circuit for maintaining oscillations, a variable mu valve relay having its anode-cathode space connected between said screen grid and cathode, biasing means in the input circuit of said variable mu valve, means in series with said biasing means for applying a second excitation voltage to said input circuit, means for dephasing said second excitation voltage substantially in quadrature with respect to said first excitation, and means responsive to the amplitude of the vector sum of said first and second excitation voltages for varying the magnitude of the voltage developed by said biasing means for stabilizing said tuned circuit frequency.
  • An oscillation generator comprising an electron discharge device having a cathode, an anode and a grid, means for producing oscillations including sources of potential for energizing said electrodes and a tuned circuit composed of inductance and capacitance, means for deriving from said tuned circuit a voltage which increases with frequency and another voltage which decreases with increase in frequency, separate means for rectifying such voltages, an apertured electrode in said tube for affecting the frequency of said oscillations, and means for combining the rectified voltages in opposition to each other for applying the resultant to said apertured electrode, a further means for applying to said apertured electrode the voltage derived from said tuned circuit and in quadrature with the voltage across said tuned circuit, whereby the frequency of oscillations produced by said generator is stabilized without dependence upon amplitude variations.

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  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
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US209202A 1937-06-01 1938-05-21 Stabilized-frequency oscillator arrangement Expired - Lifetime US2231155A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR833169T 1937-06-01

Publications (1)

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US2231155A true US2231155A (en) 1941-02-11

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ID=9296386

Family Applications (1)

Application Number Title Priority Date Filing Date
US209202A Expired - Lifetime US2231155A (en) 1937-06-01 1938-05-21 Stabilized-frequency oscillator arrangement

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US (1) US2231155A (fr)
DE (1) DE703509C (fr)
FR (1) FR833169A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL239629A (fr) * 1958-05-28

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Publication number Publication date
DE703509C (de) 1941-03-11
FR833169A (fr) 1938-10-13

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