CH103111A - Device for emitting oscillations for wireless telephony. - Google Patents

Device for emitting oscillations for wireless telephony.

Info

Publication number
CH103111A
CH103111A CH103111DA CH103111A CH 103111 A CH103111 A CH 103111A CH 103111D A CH103111D A CH 103111DA CH 103111 A CH103111 A CH 103111A
Authority
CH
Switzerland
Prior art keywords
microphone
generator
wireless telephony
oscillations
rest
Prior art date
Application number
Other languages
French (fr)
Inventor
Radio-Electrique Soc Francaise
Original Assignee
Radio Electr Soc Fr
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 Radio Electr Soc Fr filed Critical Radio Electr Soc Fr
Publication of CH103111A publication Critical patent/CH103111A/en

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Description

  

  Dispositif d'émission d'oscillations pour téléphonie sans<B>fil.</B>    La présente invention se rapporte<B>à</B> un  dispositif d'émission d'oscillations pour télé  phonie sans fil, comprenant un microphone,  un     g,#nérateur   <B>à</B> tubes     thermo-ioniques    et un  circuit     d'utiti#;atioti.    Ce dispositif est carac  térisé en ce     que    le débit du générateur dans  le circuit d'utilisation n'a lieu que lorsque  le microphone fonctionne, le générateur res  tant au repos lorsque le microphone est     lui-          même    au repos.  



  Le dessin     ci-aiinex6    représente,<B>à</B> titre  d'exemple,     une    forme d'exécution de l'objet  de l'invention.  



  Dans cette forme d'exécution, on a cons  titué un pont de     Wheatstone    avec trois im  pédances     Zi    A<I>A</I> et un dispositif de mo  dulation constitué par un microphone<B>M</B> suivi  d'ampli     ficateurs        rnicrophoniques        non-représen-          tés.    Une diagonale<B>du</B> pont est alimentée  par la source<B>à</B> haute fréquence composée de  tubes     thermo-ioniques,    taudis qu'un trans  formateur     Ti    est situé sur l'autre diagonale.  Le transformateur     Ti    est relié en<B>1</B> et 2 au  circuit d'utilisation.

   Le réglage est tel que,  lorsqu'on ne parle pas devant le microphone,  le transformateur     Ti    n'est le siège d'aucun    courant. On ne recueillera, donc de la puis  sance<B>à</B> haute fréquence aux bornes<B>1</B> et 2  que du fait de la conversation.



  Device for transmitting oscillations for wireless telephony. </B> The present invention relates <B> to </B> a device for transmitting oscillations for wireless telephony, comprising a microphone, a generator <B> with </B> thermo-ionic tubes and a circuit of initiation #; atioti. This device is characterized in that the flow rate of the generator in the user circuit takes place only when the microphone is operating, the generator being at rest when the microphone itself is at rest.



  The above drawing shows, <B> to </B> by way of example, one embodiment of the object of the invention.



  In this embodiment, a Wheatstone bridge has been constructed with three im pedances Zi A <I> A </I> and a modulating device consisting of a microphone <B> M </B> followed by microphonic amplifiers not shown. A diagonal <B> of the </B> bridge is powered by the high frequency <B> </B> source composed of thermionic tubes, slums that a Ti transformer is located on the other diagonal. The transformer Ti is connected at <B> 1 </B> and 2 to the user circuit.

   The setting is such that, when you are not speaking in front of the microphone, the transformer Ti is not the seat of any current. High frequency <B> at </B> power at terminals <B> 1 </B> and 2 will only be collected as a result of the conversation.

 

Claims (1)

REVENDICATION. Dispositif d'émission d'oscillations olir téléphonie sans<B>fil,</B> comprenant un micro phone, un générateur<B>à</B> tube.#; thermo-ioniques et un circuit d'utilisation, caractérisé en ce que le débit du générateur dans le circuit d'utilisation n'a lieu que lorsque le micro phone fonctionne, le générateur restant au repos lorsque<B>le</B> microphone est lui-même au repos. CLAIM. Device for transmitting oscillations olir wireless telephony, </B> comprising a microphone, a generator <B> to </B> tube. #; thermionics and a user circuit, characterized in that the flow of the generator in the user circuit takes place only when the microphone is operating, the generator remaining at rest when <B> the </B> microphone is itself at rest. SOUS-REVENDICATION' Dispositif selon la revendication, dans le quel le microphone est placé dans une des branches d'un pont de Wheatstone dont les trois -autres branches sont constituées par des impédances, le générateur étant relié<B>à</B> l'une des diagonales du pont, tandis que l'autre diagonale est reliée<B>à</B> la source<B>à</B> haute fré quence. SUB-CLAIM Device according to claim, in which the microphone is placed in one of the branches of a Wheatstone bridge, the three other branches of which are formed by impedances, the generator being connected <B> to </B> one of the diagonals of the bridge, while the other diagonal is connected <B> to </B> the source <B> at </B> high frequency.
CH103111D 1916-10-23 1919-12-15 Device for emitting oscillations for wireless telephony. CH103111A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR103111X 1916-10-23

Publications (1)

Publication Number Publication Date
CH103111A true CH103111A (en) 1924-02-01

Family

ID=8871878

Family Applications (1)

Application Number Title Priority Date Filing Date
CH103111D CH103111A (en) 1916-10-23 1919-12-15 Device for emitting oscillations for wireless telephony.

Country Status (1)

Country Link
CH (1) CH103111A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3017607A (en) * 1952-07-29 1962-01-16 Sidney M Rubens Acoustic impedance detecting apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3017607A (en) * 1952-07-29 1962-01-16 Sidney M Rubens Acoustic impedance detecting apparatus

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