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.Info
- 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
Links
- 230000005284 excitation Effects 0.000 claims description 2
- 238000004804 winding Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000003442 weekly effect Effects 0.000 description 1
Landscapes
- Synchronous Machinery (AREA)
Description
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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
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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
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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.
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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
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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
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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)
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) |
-
1912
- 1912-04-17 AT AT64270D patent/AT64270B/en active
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