DE202384C

DE202384C -

Info

Publication number: DE202384C
Application number: DENDAT202384D
Authority: DE
Also published as: DE195642C

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

KLASSE 21». GRUPPECLASS 21 ». GROUP

Zusatz zum Patente 195642 vom 30. Oktober 1906.Addendum to patent 195642 of October 30, 1906.

Patentiert im Deutschen Reiche vom 10. August 1907 ab. Längste Dauer: 29.Oktober 1921.Patented in the German Empire on August 10, 1907. Longest duration: October 29, 1921.

In der Patentschrift 195642 ist eine Rufschaltung für Fernsprechvermittlungsämter mit Zentralmikrophon- und Anrufbatterie beschrieben, bei der in die Stöpselleitung Organe eingeschaltet sind, welche einen Durchgang von Gleichstrom verhindern sollen, damit von dem nicht geerdeten Pol der.Batterie über die Anrufwicklung des Anrufrelais und die Wicklung der Drosselspüle nicht Gleichstrom zur Erde fließen kann.In the patent specification 195642 a call circuit is described for telephone exchanges with central microphone and call battery, in which organs are switched into the plug line, which are supposed to prevent the passage of direct current, so from the non-earthed pole of the battery via the call winding of the call relay and the coil winding cannot flow direct current to earth.

Durch vorliegende Erfindung werden unter Beibehaltung der im Hauptpatente beschriebenen Verteilung des Rufstromes auf die beiden Wicklungen des Anruf relais diese Verriegelungsorgane entbehrlich gemacht, indem die beiden auf der Drosselspule in Fig. 2 der oben genannten Patentschrift befindlichen Wicklungen m und η in vorliegender Erfindung nicht gemeinsam geerdet werden, sondem daß das eine Ende der_veinen Wicklung direkt, das eine Ende der anderen Wicklung dagegen über die Zentralbatterie geerdet wird, wobei der Strom in den Wicklungen m und η durch eine besondere, von der Ruf maschine gespeiste Primärwicklung induziert wird. Statt der durch die Wicklungen des Transformators bewirkten Teilung des Rufstromes kann derselbe auch durch andere Mittel, z. B. zwei voneinander getrennte, synchron laufende, stets gleichzeitig eingeschaltete Rufmaschinen auf die beiden Anrufrelaiswicklungen verteilt werden. ,By the present invention, while maintaining the distribution of the ringing current described in the main patent on the two windings of the call relay, these locking elements are made dispensable by the two windings m and η on the choke coil in Fig. 2 of the above-mentioned patent not being grounded together in the present invention are, special that one end of the _v a winding directly, the one end of the other winding is grounded on the other hand via the central battery, the current in the windings m and η is induced by a special primary winding fed by the call machine. Instead of the division of the ringing current caused by the windings of the transformer, the same can also be used by other means, e.g. B. two separate, synchronously running, always simultaneously switched call machines are distributed to the two call relay windings. ,

Ausführungsformen des Erfindungsgegenstandes ergeben sich aus den Fig. 1 und 2. In Fig. ι ist beispielsweise die Anordnung mit einem Transformator!) dargestellt, welcher einerseits eine von der Rufstromquelle R M gespeiste Wicklung 0 besitzt und andererseits die Wicklungen m und η trägt. Diese Wicklungen m und η sind einerseits an die Rufkontakte r des Umschalters S geführt, an den die Leitungen des Verbindungsstöpsels h herangeführt sind. Das andere Ende der Wicklung m ist direkt, das andere Ende der Wicklung η über die Zenträlbatterie B an Erde gelegt. .Embodiments of the subject matter of the invention emerge from FIGS. 1 and 2. In FIG. 1, for example, the arrangement with a transformer is shown, which on the one hand has a winding 0 fed by the ringing current source RM and on the other hand carries the windings m and η. These windings m and η are, on the one hand, led to the call contacts r of the changeover switch S , to which the lines of the connecting plug h are led. The other end of the winding m is connected directly, the other end of the winding η via the central battery B to earth. .

Hierdurch werden, sobald der Stöpsel h in eine der Klinken eingeführt wird, zwei getrennte Wechselstromkreise hergestellt, von denen der eine aus der Wicklung m des Transformators D und der Haltewicklung d des Anrufrelais besteht, während der andere aus der Wicklung η des Transformators und der Anzugswicklung c des Anrüfrelais gebildet ist. Zwischen diesen beiden Kreisen liegt dann die Batterie des Amtes. Bei dieser Schaltung kann ein Gleichstromfluß über Teile der Wechselstromkreise nicht stattfinden, trotzdem besondere Gleichstromverriegelungsorgane, wie Kondensatoren, Polarisationszellen u. dgl., nicht vorhanden sind. Jedoch ist es bei vorliegender Erfindung erforderlich, um einen Stromfluß über die Rufmaschine R M zu verhindern, an Stelle der im HauptpatenteAs a result, as soon as the plug h is inserted into one of the jacks, two separate alternating current circuits are established, one of which consists of the winding m of the transformer D and the holding winding d of the call relay, while the other consists of the winding η of the transformer and the pull-in winding c of the call relay is formed. The office's battery is located between these two circles. With this circuit, a direct current flow through parts of the alternating current circuits cannot take place, although special direct current locking devices such as capacitors, polarization cells and the like are not present. However, in the present invention, it is necessary to prevent current flow through the paging machine RM in lieu of that in the main patents

Claims

(Fig. 2) shown inductor D (autotransformer) to use a transformer D with separate windings. However, this does not change the mode of operation of the invention as described in the main patent, as well as the current flow, etc. The call of the subscriber Ä from the office is done by inserting the plug h into a line jack and by connecting the plug parts to the AC power source RM through the intermediary of the transformer D and the button S. The following sequence results for the ringing current sent to the intercom A: The alternating current induced in windings m and η flows via line b to subscriber A, line a, plug tip from h through winding η via battery B to earth, ztt-the 'earthed end of coil m back to the plug neck. Another embodiment for the subject matter of the invention can be seen from FIG. Here, avoiding the transformer, two separate, synchronously running, always simultaneously switched on call machines RM1 and RM2 are used, which are switched on in place of the windings m and η in the line. In this case, the following current course results for the ringing circuit: The current goes from the 'ringing current source R M1 via the neck of the plug h ,. Line b, subscriber A, line a, plug tip of the plug h via call machine R M2, battery B to earth and from there to the earthed pole of the call machine R M1. Here, inter alia. the advantage achieved that it can be operated very economically, since the transformer losses etc. are eliminated, and that voltage regulation and the current distribution caused thereby in the coils of the call relay is possible in the simplest manner. ■ Patent claims:

1. Call circuit for telephone exchanges with central microphone and '

- Call battery according to patent 195642, characterized in that the alternating current generators (RM, D) used for distributing the call current to the call and hold winding (c and d) are connected to the earthed central battery (B) in such a way that each of the two parts (m, n) of the power generating system, with the associated call relay coil (d, c) forms a closed circuit excluding the central battery, for the purpose of preventing direct current flows during the call.

2. Arrangement according to claim 1 j, characterized in that two separate, from a call machine (RM) via a transformer (D) excited secondary windings (m, n) are used as an alternator, which are connected to the same pole of the battery (B) are connected like the associated relay winding

3. Arrangement according to claim 1, there -, - characterized j that two separate, synchronously running, always simultaneously switched call machines (RM ₁ , RM ₂ ) are used as alternating current generator.

1 sheet of drawings.