AT64270B - Device for amplifying alternating currents, in particular for the purposes of sending and receiving in telegraphy and telephony. - Google Patents

Device for amplifying alternating currents, in particular for the purposes of sending and receiving in telegraphy and telephony.

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Publication number
AT64270B
AT64270B AT64270DA AT64270B AT 64270 B AT64270 B AT 64270B AT 64270D A AT64270D A AT 64270DA AT 64270 B AT64270 B AT 64270B
Authority
AT
Austria
Prior art keywords
telegraphy
telephony
sending
purposes
receiving
Prior art date
Application number
Other languages
German (de)
Inventor
Rudolf Dr Goldschmidt
Original Assignee
Rudolf Dr Goldschmidt
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 Rudolf Dr Goldschmidt filed Critical Rudolf Dr Goldschmidt
Application granted granted Critical
Publication of AT64270B publication Critical patent/AT64270B/en

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  • Synchronous Machinery (AREA)

Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 



   In dem Patente Nr. 63441 ist eine Vorrichtung zur Verstärkung schwacher elektrischer Wechselströme beschrieben, die im wesentlichen darauf beruht, dass ein von einer beliebigen Wechselstromquelle mit der Frequenz   Mi   erregter Asynchrongenerator übersynchron angetrieben wird, und zwar mit einer solchen Drebgeschwindigkeit   wo,   dass die durch den Schlupf   Wo - Wl   im Rotorkreis induzierte Spannung die Primärspannung durch Rückwirkung gänzlich oder fast aufhebt. Damit im Sekundärkreis tatsächlich nur Ströme von der Schlupffrequenz   M-Mi Giessen,   muss er auf diese Frequenz abgestimmt werden. 



  Auch der Primärkreis muss auf die von der beliebigen   Wochselstromquelle   entnommenen Frequenz   Mi   abgestimmt sein (Fig. 1). 



   Der Zweck der vorliegenden Erfindung ist der, diese doppelte Abstimmung zu ersparen und durch eine einzige zu ersetzen. Es gelingt dies, wenn man die Primärfrequenz und die Schlupffrequenz einander gleich macht, d. h. wenn   #0 - #1 = #1   oder wenn 
 EMI1.2 
 und Sekundärstromkreis zu einem einzigen Stromkreis vereinigt. Dabei können Rotor-und Statorwicklung parallel oder (wie in Fig. 2) hintereinander geschaltet sein. 



   Nach Gleichung 6) der Beschreibung des Stammpatentes wird die dem Generator 
 EMI1.3 
 
 EMI1.4 
 
 EMI1.5 
 äquivalente Widerstand des vereinigten Stromkreises   nach Flg. 2   zu R = Konst.   #1   oder etwas grösser zu wählen sein, in Übereinstimmung mit Gleichung   1)   der angezogenen Beschreibung des Stammpatentes, wo   i2   = il zu setzen ist. 



   Auch hier können, ebenso wie bei der Anordnung des Stammpatentes, die Erregerquelle 31 und der Nutzwiderstand   V   (Fig. 2) parallel oder hintereinander liegen. 



  Ferner können die Wicklungen P und S, anstatt sich relativ zueinander zu bewegen, stillstehen und die Selbst- oder gegenseitige Induktion durch Rotation eines Eisenkernes verändert werden, wobei dann wieder die beiden Wicklungen zu einer einzigen tereinigt werden können.



   <Desc / Clms Page number 1>
 
 EMI1.1
 



   In the patent no. 63441 a device for amplifying weak electrical alternating currents is described, which is based essentially on the fact that an asynchronous generator excited by any alternating current source with the frequency Mi is driven over-synchronously, and at such a speed of rotation that the Slip Wo - Wl The voltage induced in the rotor circuit completely or almost eliminates the primary voltage through reaction. So that in the secondary circuit only currents of the slip frequency M-Mi pour, it must be adjusted to this frequency.



  The primary circuit must also be tuned to the frequency Mi drawn from any weekly power source (FIG. 1).



   The purpose of the present invention is to save this double tuning and to replace it with a single one. This is possible if the primary frequency and the slip frequency are made equal to one another, i.e. H. if # 0 - # 1 = # 1 or if
 EMI1.2
 and secondary circuit combined into a single circuit. The rotor and stator windings can be connected in parallel or (as in FIG. 2) in series.



   According to equation 6) of the description of the parent patent, the generator
 EMI1.3
 
 EMI1.4
 
 EMI1.5
 equivalent resistance of the combined circuit according to Flg. 2 to R = const. # 1 or slightly larger must be selected in accordance with equation 1) of the description of the parent patent referred to, where i2 = il is to be set.



   Here, too, as in the arrangement of the parent patent, the excitation source 31 and the useful resistor V (FIG. 2) can be parallel or one behind the other.



  Furthermore, instead of moving relative to one another, the windings P and S can stand still and the self-induction or mutual induction can be changed by rotating an iron core, in which case the two windings can again be cleaned into a single one.

 

Claims (1)

PATENT-ANSPRUCH : Vorrichtung zur Verstärkung von Wechselströmen, insbesondere für die Zwecke des Sendens und Empfangens in der Telegraphie und Telephonie, nach Patent Nr. 63441 dadurch gekennzeichnet, dass die Schlupffrequenz im Rotorkreis gleich der Primärfrequenz gewählt wird und Stator- und Rotorkreis in einem Stromkreise vereinigt werden, der auf die gewählte Erregerfrequenz abgestimmt wird. EMI1.6 PATENT CLAIM: Device for amplifying alternating currents, in particular for the purposes of sending and receiving in telegraphy and telephony, according to Patent No. 63441, characterized in that the slip frequency in the rotor circuit is chosen to be equal to the primary frequency and the stator and rotor circuit are combined in one circuit, which is matched to the selected excitation frequency. EMI1.6
AT64270D 1910-04-11 1912-04-17 Device for amplifying alternating currents, in particular for the purposes of sending and receiving in telegraphy and telephony. AT64270B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE63441X 1910-04-11
AT64270T 1912-04-17

Publications (1)

Publication Number Publication Date
AT64270B true AT64270B (en) 1914-04-10

Family

ID=25603070

Family Applications (1)

Application Number Title Priority Date Filing Date
AT64270D AT64270B (en) 1910-04-11 1912-04-17 Device for amplifying alternating currents, in particular for the purposes of sending and receiving in telegraphy and telephony.

Country Status (1)

Country Link
AT (1) AT64270B (en)

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