US1909751A - Transmitter - Google Patents

Transmitter Download PDF

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Publication number
US1909751A
US1909751A US595803A US59580332A US1909751A US 1909751 A US1909751 A US 1909751A US 595803 A US595803 A US 595803A US 59580332 A US59580332 A US 59580332A US 1909751 A US1909751 A US 1909751A
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US
United States
Prior art keywords
tubes
direct current
source
circuit
potential
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
US595803A
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English (en)
Inventor
Buschbeck Werner
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 US1909751A publication Critical patent/US1909751A/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

Definitions

  • This invention relates to a circuit arrangement adapted. to reduce high-frequency energy losses in plate protective resistances in push-pull transmitters.
  • Fig. 1 shows a trans mitting circuit in which the novel features of the present invention are included; while Figs. 2, 3 and 4 show modifications of the arrangement of Fig. 1.
  • the chokecoils of pairs of opposite tubes are embraced by one condenser as shown in Fig. 4.
  • the terminals of each choke'coil D remote from the plate electrode of the tube to which it supplies charging potential is connected as shown to the corresponding terminal of another tube similarly located in groups of push-pull tubes through a condenser C2 as indicated.
  • This perm. s the radio frequency currents to pass .hrough the circuits without passin through the resistances 9", wherein losses would occur.
  • the condensers C not being connected to the filaments of the tubes are cated in Fig. 1.
  • the tank circuit of each modification may be connected with any load circuit, for example, an aerial system as indicated in Fig. 1 or an amplifier as indicated in Fig. 3.
  • An alternatin current -relay including, a pair or" hermionic tubes, each having an anode and a cathode, the cathodes being connected together, an alternating current circuit there bein connecting the anodes of said tubes in pushpull relation, said alternating current circuit being completed by a direct connection to the cathodes of tubes, a source of direct current potential, a separate circuit for applying direct current potential between the anodes and cathodes of said tubes comprising, a connection between one terminal of said source and the cathodes of said tubes, connections between the other terminal of said source and the anode electrode of each of said tubes, a resistance and a choke coil in series in each of said connections in the order given, the resistance acting to prevent flashover between said tubes when the applied direct current potential is too high, the choke coil acting to substantially prevent alternatcurrent from said alternating current circuit from reaching said resistance in said direct current source, and means for shunting any alternating current which gets through said choke coils around said source and said resistance including a capacity
  • a radio frequency relay including, a pair or thermionic tubes, each having an anode and acathode, the cathodes being connected together, an alternating current circuit including an inductance connecting the anodes of said tubes in push-pull relation, a pair of capacities in parallel with said inductance, and means for completing said alternating current circuit including, a connection between adjacent electrodes of said capacities and the cathodes of said tubes, a

Landscapes

  • Amplifiers (AREA)
  • Particle Accelerators (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
US595803A 1931-01-09 1932-02-29 Transmitter Expired - Lifetime US1909751A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE379957X 1931-01-09

Publications (1)

Publication Number Publication Date
US1909751A true US1909751A (en) 1933-05-16

Family

ID=6344781

Family Applications (1)

Application Number Title Priority Date Filing Date
US595803A Expired - Lifetime US1909751A (en) 1931-01-09 1932-02-29 Transmitter

Country Status (3)

Country Link
US (1) US1909751A (de)
AT (1) AT131313B (de)
GB (1) GB379957A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428616A (en) * 1943-11-02 1947-10-07 Philco Corp Electrical protective device

Also Published As

Publication number Publication date
GB379957A (en) 1932-09-08
AT131313B (de) 1933-01-10

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