US1890527A - Frequency multiplication - Google Patents

Frequency multiplication Download PDF

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Publication number
US1890527A
US1890527A US499450A US49945030A US1890527A US 1890527 A US1890527 A US 1890527A US 499450 A US499450 A US 499450A US 49945030 A US49945030 A US 49945030A US 1890527 A US1890527 A US 1890527A
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US
United States
Prior art keywords
frequency
filament
heating
circuit
current
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
US499450A
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English (en)
Inventor
Osnos Mendel
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 US1890527A publication Critical patent/US1890527A/en
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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
    • H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
    • H03B19/06—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes
    • H03B19/08—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes by means of a discharge device
    • H03B19/10—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes by means of a discharge device using multiplication only

Definitions

  • the present invention has for an object the provision of methods and means for amplifying these overtones or higher harmonics and/or to increase their number.
  • the modulating action of the alternating current heating the filament is utilized in the operation of electric valves when working as low or high frequency converters, by choosing the frequency of the heating or filament current so that in relation to the fundamental wave a practical improvement of the desired frelation, there is produced in the valve current, I
  • Figure 2 illustrates a similar systemwherein currents of different frequency are applied "to the input and filament heating circuits of a vacuum tube frequency multiplier.
  • alternating energy from an oscillator 2 of suitable construction is applied to the input circuit of electron discharge device 4, througlithe action of transformer 6 and-to the cathode heating circuit thereofthrough the action of transformer8.
  • the frequency of currents applied may either be a low frequency, such as an audio frequency, a superaudible frequency, or a radio frequency, depending upon the desired output.
  • frequency multiplier 4 may be fed to any suitable utilization circuit, or fed in a similar fashion to a similarly connected frequency multiplier for still further increasing the frequency of alternating current originally derived from oscillator 2.
  • frequency multiplier 12 is fed to the input side of electron discharge device frequency multiplier 14; whereas, energy of a frequency of the same order corresponding to that of oscillator'2 is fed to the cathode circuit thereof through transformer 16 as shown.
  • energy of desired frequencies may be derived for direct use or for further frequency multiplication and ampli- 'fication.
  • the filament or cathode may be of the indirectlyvheated type although it is'preferred that the cathode consist merely of a high resistance conductor.
  • a high frequency producing means com-v prising asource of oscillations and means for multiplying the frequency of said oscillations including, a thermionic discharge device having input and output electrodes including a heated cathode, a transformer having its primary winding connected to said oscillator and its secondary winding connected in series with the heated cathode of said tube, an input circuit including an inductance connected between the control electrode of said tube and the electrical midpoint of said secondary winding of said transformer, a second inductance connected with said oscillator and coupled to said first named inductance, a circuit connected between the output electrodes of said tube,.and means in said output circuit for tuning the'same to a multiple of the frequency of said source.

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  • Amplifiers (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
US499450A 1929-12-02 1930-12-02 Frequency multiplication Expired - Lifetime US1890527A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE358754T 1929-12-02

Publications (1)

Publication Number Publication Date
US1890527A true US1890527A (en) 1932-12-13

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ID=31895351

Family Applications (1)

Application Number Title Priority Date Filing Date
US499450A Expired - Lifetime US1890527A (en) 1929-12-02 1930-12-02 Frequency multiplication

Country Status (2)

Country Link
US (1) US1890527A (enrdf_load_stackoverflow)
GB (1) GB358754A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3076133A (en) * 1959-07-31 1963-01-29 Hughes Aircraft Co Parametric frequency multiplier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3076133A (en) * 1959-07-31 1963-01-29 Hughes Aircraft Co Parametric frequency multiplier

Also Published As

Publication number Publication date
GB358754A (enrdf_load_stackoverflow) 1931-10-15

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