US1931870A - Connection for electron tubes for the multiplication of frequency - Google Patents

Connection for electron tubes for the multiplication of frequency Download PDF

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Publication number
US1931870A
US1931870A US492760A US49276030A US1931870A US 1931870 A US1931870 A US 1931870A US 492760 A US492760 A US 492760A US 49276030 A US49276030 A US 49276030A US 1931870 A US1931870 A US 1931870A
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US
United States
Prior art keywords
frequency
grid
current
tube
anode
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
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US492760A
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English (en)
Inventor
Kramar Ernst
Rochow Hans
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.)
Alcatel Lucent Deutschland AG
C Lorenz AG
Original Assignee
Standard Elektrik Lorenz 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 Standard Elektrik Lorenz AG filed Critical Standard Elektrik Lorenz AG
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Publication of US1931870A publication Critical patent/US1931870A/en
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Expired - Lifetime legal-status Critical Current

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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
    • 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

  • a fundamental. or monitored frequency is supplied from a central station. From this fundamental frequency higher harmonics are obtained by means of frequency multiplying devices.
  • the resultant frequencies produced in accordance with this invention may, by proper adjustment of the associated apparatus, be made to have the same amplitude and a period or cycle individual to the particular transmitting apparatus supplied therewith.
  • This variation in amplitude of the fundamental frequency may be attributed tothe practice of using the standard electric cables of telephone and telegraph lines for conveying the current to the various broadcasting stations.
  • apparatus broadcasting ona predeter mined wave length or frequency may be thrown completely out of operation due merely to-a very slight drop in the amplitude of the current supplied.
  • the inconveniences referred to can be avoided since the negative bias is divided into a firmly adjusted bias and. a bias which will change in dependency on the grid current of the multiplying tube or valve.
  • Figure 1 shows diagrammatically the characteristic curve of the valve
  • I v Figure 2 is a diagram of the connections.
  • I In Figurel the characteristic curve of the tube and the variations of the fundamental frequency supplied or of theanode currents produced respectively, are represented diagrammatically.
  • the upper (hatched) section of the alternating frequency supplied to the grid will shift from the point 2 to the left hand side, and there can occur no longer any anode current.
  • the negative biassing of the grid is constituted by a fixed portion and a changing portion, which will undergo changes in dependency on the grid-current of the tube.
  • the working point of the characteristic curve of the tube must be arranged in such a manner, that work is done in the positive territory, so that upon occurrence of the impulses of positive voltage in the tube a'grid current will flow.
  • the grid current for the control of the variable biassed portion.
  • Alternating frequency is supplied by way of the inductance L1 to the inductance L2.
  • the grid of the tube R in the anode circuit of which an oscillatory circuit is situated, formed of the elements C2 and L3, from which circuit the multiplied frequency V is drawn.
  • a highly negative bias is imparted to the grid and the source of bias B is shunted by the capacity C1.
  • a transformer having a high leakage reactance As a first means for obtaining the effect according to the invention the use of a transformer having a high leakage reactance is suggested. This may be done by loosely coupling the windings, by increasing the number of turns on both primary and secondary, or, in the case of an iron core transformer, by adjustment so that the peak of the desired voltages in the primary occurs at a value of grid current which saturates the core. If this transformer has a high leakage reactance its secondary voltage will be automatically re Jerusalem by a stronger grid current. As thismeans inmost instances will not suflice alone, a resistance W1 is inserted in the lead for the continuous current bias supply of the grid.
  • This resistance Will cooperate with the transformer to act in the manner of an automatic biassing device and in the case of amplitude fluctuations the grid current will also assist to automatically adjust the proper bias.
  • a resistance W2 is provided in the lead tothe anode.
  • 'A frequency multiplier comprising a vacuum tube having anode, cathode and grid circuits, means for biasing the grid of said tube at least to the cut-off point, inductive means for impressing an alternating current on said grid circuit in such a manner that current of one polarity only causes an impulse of current to flow in the anode circuit, and means including a resistance in said grid circuit for changing the bias in said grid circuit in proportion to the changes in amplitude of said current.
  • a frequencymultiplier comprising a vacuum tube having anode, cathode and grid circuits, means for biasing the grid of said tube at least to the cut-off point, means for inducing analternating current in said grid circuit in such a manner that the positive peaks of said current cause an impulse of current to flow in the anode circuit, and means including a resistance in said grid circuit for changing the bias in said grid circuit in proportion to the changesin amplitude of said positive peaks.
  • a frequency multiplier comprising a vacuum tube having anode, cathode and grid circuits,
  • means including a resistance in said grid circuit for changing the bias in said grid circuit in proportion to the changes in amplitude of said positive peaks, and for making a predetermined portion of each positive impulse effective to render said vacuum tube operative.

Landscapes

  • Microwave Tubes (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Particle Accelerators (AREA)
  • Amplifiers (AREA)
US492760A 1929-11-09 1930-11-01 Connection for electron tubes for the multiplication of frequency Expired - Lifetime US1931870A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEL76699D DE535528C (de) 1929-11-09 1929-11-09 Elektronenroehrenschaltung zur Frequenzvervielfachung
DE356988T 1929-11-09

Publications (1)

Publication Number Publication Date
US1931870A true US1931870A (en) 1933-10-24

Family

ID=31947507

Family Applications (1)

Application Number Title Priority Date Filing Date
US492760A Expired - Lifetime US1931870A (en) 1929-11-09 1930-11-01 Connection for electron tubes for the multiplication of frequency

Country Status (6)

Country Link
US (1) US1931870A (enrdf_load_stackoverflow)
AT (1) AT126308B (enrdf_load_stackoverflow)
DE (1) DE535528C (enrdf_load_stackoverflow)
FR (1) FR704209A (enrdf_load_stackoverflow)
GB (1) GB356988A (enrdf_load_stackoverflow)
NL (1) NL33959C (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2468624A (en) * 1945-02-28 1949-04-26 Rca Corp Modulated wave shaper
US2501122A (en) * 1945-07-04 1950-03-21 Rca Corp Angle modulation receiver
US3161780A (en) * 1959-09-29 1964-12-15 Siemens Ag Pulse distortion circuit for producing odd and even multiples of a fundamental frequency

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE967712C (de) * 1943-10-23 1957-12-05 Lorenz C Ag Oberwellengenerator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2468624A (en) * 1945-02-28 1949-04-26 Rca Corp Modulated wave shaper
US2501122A (en) * 1945-07-04 1950-03-21 Rca Corp Angle modulation receiver
US3161780A (en) * 1959-09-29 1964-12-15 Siemens Ag Pulse distortion circuit for producing odd and even multiples of a fundamental frequency

Also Published As

Publication number Publication date
GB356988A (enrdf_load_stackoverflow) 1931-09-17
NL33959C (enrdf_load_stackoverflow)
AT126308B (de) 1932-01-11
FR704209A (fr) 1931-05-15
DE535528C (de) 1931-10-12

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