US1522305A - Radioreceiver - Google Patents

Radioreceiver Download PDF

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Publication number
US1522305A
US1522305A US396281A US39628120A US1522305A US 1522305 A US1522305 A US 1522305A US 396281 A US396281 A US 396281A US 39628120 A US39628120 A US 39628120A US 1522305 A US1522305 A US 1522305A
Authority
US
United States
Prior art keywords
filament
amplifier
source
waves
lamp
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
US396281A
Other languages
English (en)
Inventor
Latour Marius
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.)
Individual
Original Assignee
Individual
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
Priority to BE148951D priority Critical patent/BE148951A/xx
Priority to NL7842D priority patent/NL7842C/xx
Priority to FR503047A priority patent/FR503047A/fr
Priority to DEL50941D priority patent/DE366268C/de
Priority to GB20809/20A priority patent/GB148951A/en
Application filed by Individual filed Critical Individual
Priority to US396281A priority patent/US1522305A/en
Application granted granted Critical
Publication of US1522305A publication Critical patent/US1522305A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L13/00—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00
    • H04L13/18—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00 of receivers
    • H04L13/182—Printing mechanisms
    • H04L13/184—Photographic printing and recording
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/08—Demodulation of amplitude-modulated oscillations by means of non-linear two-pole elements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/14—Demodulation of amplitude-modulated oscillations by means of non-linear elements having more than two poles
    • H03D1/16—Demodulation of amplitude-modulated oscillations by means of non-linear elements having more than two poles of discharge tubes

Definitions

  • This invention relates to a receiving arrangement for the reception of electromagnetic waves.
  • a I such waves from a remote signalling source com trol the condition of a thermionic filament.
  • Fig. 2 is a diagram of the lamp circuit when a generator is used for this purpose.
  • the receiving aerial 1 acts on a. circuit 2 comprising an inductance and gacapacity which feeds a high frequency amplifier.
  • This amplifier is formed by severalther i IlllOIllC elements with three electrodes, grid 7 G. anode P, and filament F,mounted in usua1 -manner.,
  • the filaments of these thermionic elements are heated by a source of electrical energy 3 whilst their anodes are raised to the necessary potential by a source of electrical energy 4.
  • the filament anode circuit I of the last, amplifying tube acts through a transformer A 6 on a small lam 7, having-asfine a metallic filament as possible (-for instance of tungsten)'..
  • Each wave received by the aerial and amplifier directly raisesthc filament to incandescence.
  • continuous waves may be received without'a-ny special heterodyne device. ;Nevertheless a small local generator of continuous waves of. the same frequency as that of the sending station may be substituted for the source of directcurrent 8, in such a way that the energy of the waves emitted by the local generator.
  • the shunt resistance 9 will be preferably placed across the terminals of the lamp to protect the latter against too violent straycurrents b acting as a voltage limiter.
  • a photographic strip I similar to a recording photogra hie 'cylinder is obtained.
  • causin t is photo graphic strip to pass like a cmematograph before a selenium cell inserted in a circuit comprising a battery and a telephone, the said telephone'is able to reproduce the conversation received.
  • a recelyer' for high frequency signals J and the like,' comprising in combination a thermionic -.tube amplifier, an electric lam ccrmected-v tolf tlie said amplifier and fe the said amplifier :to be ed thereby,
  • the method of converting imperceptible high frequency signals and the like into perceptible manifestations which comprises converting said signals into electric currents, combining said currents with currents from an independent source, and passing such combined currents through a resistance adapted to be brought to a state of incandescence thereby.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Facsimiles In General (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
US396281A 1916-10-21 1920-07-14 Radioreceiver Expired - Lifetime US1522305A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BE148951D BE148951A (fr) 1916-10-21
NL7842D NL7842C (fr) 1916-10-21
FR503047A FR503047A (fr) 1916-10-21 1916-10-21 Dispositif de réception en télégraphie sans fil
DEL50941D DE366268C (de) 1916-10-21 1920-07-10 Empfangsvorrichtung fuer drahtlose Telegraphie oder Telephonie
GB20809/20A GB148951A (en) 1916-10-21 1920-07-10 Improvements in and relating to a receiving arrangement for the reception of electromagnetic waves
US396281A US1522305A (en) 1916-10-21 1920-07-14 Radioreceiver

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR503047T 1916-10-21
US396281A US1522305A (en) 1916-10-21 1920-07-14 Radioreceiver

Publications (1)

Publication Number Publication Date
US1522305A true US1522305A (en) 1925-01-06

Family

ID=26214648

Family Applications (1)

Application Number Title Priority Date Filing Date
US396281A Expired - Lifetime US1522305A (en) 1916-10-21 1920-07-14 Radioreceiver

Country Status (6)

Country Link
US (1) US1522305A (fr)
BE (1) BE148951A (fr)
DE (1) DE366268C (fr)
FR (1) FR503047A (fr)
GB (1) GB148951A (fr)
NL (1) NL7842C (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2916668A (en) * 1955-07-01 1959-12-08 Research Corp Heat stabilized field emission electron sources

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767767C (de) * 1937-04-06 1953-05-18 Automatic Telephone & Elect Funkenloeschanordnung fuer Fernmelde-, insbesondere Fernsprechanlagen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2916668A (en) * 1955-07-01 1959-12-08 Research Corp Heat stabilized field emission electron sources

Also Published As

Publication number Publication date
NL7842C (fr)
DE366268C (de) 1923-01-02
BE148951A (fr)
FR503047A (fr) 1920-06-01
GB148951A (en) 1921-10-06

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