AT131802B - Attachment for full AC mains connection operation for receiving ultrashort waves and for connection to the low-frequency amplifier of conventional radio receivers. - Google Patents

Attachment for full AC mains connection operation for receiving ultrashort waves and for connection to the low-frequency amplifier of conventional radio receivers.

Info

Publication number
AT131802B
AT131802B AT131802DA AT131802B AT 131802 B AT131802 B AT 131802B AT 131802D A AT131802D A AT 131802DA AT 131802 B AT131802 B AT 131802B
Authority
AT
Austria
Prior art keywords
attachment
full
low
connection
frequency amplifier
Prior art date
Application number
Other languages
German (de)
Original Assignee
Telefunken Gmbh
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 Gmbh filed Critical Telefunken Gmbh
Application granted granted Critical
Publication of AT131802B publication Critical patent/AT131802B/en

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  • Amplifiers (AREA)

Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 



   Für den Empfang von Ultrakurzsendern wird man zweckmässigerweise Vorsatzgeräte benutzen, die   grundsätzlich   nur aus dem   Gleichrichter bestellen und   die an die Grammophonbuchsen normaler Rundfunkempfänger angeschlossen werden. Die Apparatur zum Empfang der ultrakurzen Wellen wird dadurch um den Preis des   Niederfrequenzverstärkers   verbilligt. 



   Der näehstliegende Gedanke ist der, die Betriebsspannungen des   Vorsatzgerätes   einem eigenen kleinen   Netzanschlussgerät   zu entnehmen. Der Nachteil dieser Anordnung ist der grosse Anfwand und der dadurch bedingte hohe Preis. Man hat daher vorgeschlagen, die Betriebsspannungen für das Vorsatzgerät dem angeschlossenen Empfänger zu entnehmen. Dieses Verfahren hat aber den   Nachteil, dass   die Heizspannung von Netzanschlussempfängern sehr schwer zugänglich ist. Ausserdem ist die zusätzliche 
 EMI1.2 
 überlastet werden. 



   Erfindungsgemäss werden diese Nachteile dadurch behoben, dass die Vorsatzgeräte einen eigenen kleinen Transformator zur Lieferung der Heizspannung erhalten, während sie den erforderlichen. Anodenstrom dem angeschlossenen Rundfunkempfänger entnehmen. Um dies ohne Schwierigkeiten   durchführen   
 EMI1.3 
 nämlich kleiner als 2 Milliampere, ist. Dieses Verfahren hat den Vorteil, dass die   zusätzliche Belastung   des   Netzansehlussgerätes   beim angeschlossenen   Rundfunkempfänger   sehr gering ist. Ausserdem ist die   Anodenspannmg   des   Rundfunkempfängers   zumeist an den   Lautsprecherbuchsen leicht zugänglich.   



   PATENT-ANSPRÜCHE : 
 EMI1.4 
 zeichnet, dass die zum Betrieb des Vorsatzgerätes erforderliche Heizleistung einem besonderen im Vorsatz-   gerät   vorhandenen Heiztransformator entnommen wird, während die   erforderliche Anodenleistuna dem   
 EMI1.5 
 dass sein   Anodenstromverbraueh   kleiner als 2   Milliampere   ist. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 
 EMI1.1
 



   For the reception of ultrashort transmitters, it is expedient to use attachments that basically only order from the rectifier and that are connected to the gramophone sockets of normal radio receivers. The apparatus for receiving the ultrashort waves is thereby cheaper at the price of the low-frequency amplifier.



   The closest idea is to take the operating voltages of the attachment from its own small power supply unit. The disadvantage of this arrangement is the large amount of effort required and the resulting high price. It has therefore been proposed that the operating voltages for the front attachment be taken from the connected receiver. However, this method has the disadvantage that the heating voltage of network connection receivers is very difficult to access. Also is the additional
 EMI1.2
 become overloaded.



   According to the invention, these disadvantages are eliminated in that the front-end devices receive their own small transformer for supplying the heating voltage while they supply the required. Take the anode current from the connected radio receiver. To do this without difficulty
 EMI1.3
 namely less than 2 milliamperes. This method has the advantage that the additional load on the network connection device at the connected radio receiver is very low. In addition, the anode voltage of the radio receiver is mostly easily accessible at the speaker jacks.



   PATENT CLAIMS:
 EMI1.4
 indicates that the heating power required to operate the attachment is taken from a special heating transformer in the attachment, while the required anode power is
 EMI1.5
 that its anode current consumption is less than 2 milliamperes.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

2. Vorsatzgerät für vollen Wechselstrom-Netzanschlussbetrieb zum Empfang von ultrakurzen EMI1.6 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. 2. Attachment for full AC mains connection operation for receiving ultrashort EMI1.6 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT131802D 1931-06-17 1932-03-04 Attachment for full AC mains connection operation for receiving ultrashort waves and for connection to the low-frequency amplifier of conventional radio receivers. AT131802B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE131802X 1931-06-17

Publications (1)

Publication Number Publication Date
AT131802B true AT131802B (en) 1933-02-10

Family

ID=29277689

Family Applications (1)

Application Number Title Priority Date Filing Date
AT131802D AT131802B (en) 1931-06-17 1932-03-04 Attachment for full AC mains connection operation for receiving ultrashort waves and for connection to the low-frequency amplifier of conventional radio receivers.

Country Status (1)

Country Link
AT (1) AT131802B (en)

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