DE603924C - Circuit arrangement for telephone systems with dialer operation and production of different connections via the same connection devices and lines - Google Patents

Description

GERMAN EMPIRE

ISSUED ΑΠ OCTOBER 11, 1934

REICH PATENT OFFICE

PATENT LETTERING

CLASS 21a ³ GROUP 67

Siemens & Halske Akt.-Ges. in Berlin-Siemensstadt *)

Addition to patent 543

Patented in the German Empire on September 16, 1926 The main patent started on October 18, 1925.

The subject of the main patent is a circuit arrangement for telephone systems with voter operation and the establishment of connections of various values via the same Connection devices and lines in which a connection according to their Valence of switching devices is controlled, which depends on the number in front of the Adjustment current surges recorded initial current surges in various ways be brought into effect.

The control of the connection devices by the introducing current surges requires a certain time, and it may happen that the first set rush current is sent out before this control is completed which can lead to malfunctions and possibly incorrect connections.

The invention aims to eliminate these difficulties, which is simple Way is achieved in that one at the outgoing end of the connection line arranged rush current transformer is under the influence of setting current surges Relay arrangement is assigned, which the impulse relay only after inclusion brings one or more numbered current impulses to effect and, after the end of the series of current impulses, the transmission an additional number corresponding to the initially suppressed rushes Power surges caused by the transmission relay.

An exemplary embodiment is shown in the figures a circuit for establishing local and remote connections via a two-wire Connecting line and shown via the same line selector.

The figure shows a subscriber station JVi, which can be connected to the group selector GW via a preselector VW , to whose connection contacts the outgoing end of two-wire connecting lines is connected by means of a "transformer Ue 1. This transformer Ue 1 can also be used via a preselector FVW during manufacture The preselector FVW is connected to a jack FK1, which is arranged at the remote station FP1 . A transformer Ue 2 is arranged at the incoming end of a two-wire connection line, which

The patent seeker stated as the inventor:

Dr. Maximilian Mathias in Berlin-Charlottenburg.

a line selector, not shown, is assigned for local and long-distance traffic. This line selector corresponds to the line selector LW shown in the main patent.

The general mode of operation of this arrangement is as follows:

If the transformer Ue ι at the outgoing end of a two-wire connection line ίο is occupied by a subscriber, the transmission of a current impulse takes place via the connection line, whereby the switching devices combined in the transformer Ue2 are influenced in such a way that they control the line selector when a local connection is made. If, on the other hand, the remote station / ⁷ ZV has been connected to the transformer Uex , two initial current impulses are sent over the connecting line before the setting current surges and the devices of the transformer Ue 2 at the incoming end of the connecting line for controlling the line selector are influenced when a remote connection is established.

The mode of operation of the switching devices shown in the accompanying figure when establishing a local connection and a remote connection will now be described in more detail below. For this purpose, it is assumed that the subscriber station Λ / Ί indicated in the figure wishes to establish a connection with a subscriber who can be reached via the line selector downstream of the transmitter Ue 2.

When the handset is picked up, the connection devices upstream of the transmitter Ue 1 are occupied in a known manner and raised to the desired decade by dialing the first digit of the group selector. The group selector will now automatically search for a free transformer. If the transformer Ue ι is the first free in this series of contacts, the following circuit is established: earth in the GW, break contacts 9 /, 34CI, 11 Iv, 21 / z, winding of relay X ₁ battery, earth. The relay X is energized and flips its contacts. Via the contacts 22 χ and 23 χ , the alternating current source WQ is applied to the left windings of the transformer 24 of the connecting line, whereby the alternating current relay 7 2 in the transformer Ue2 is excited at the incoming end of the connecting line. Via the contact 5 λ: the relay Ci (winding I) is excited, which closes a holding circuit for its second winding via its contacts35ei, the upper voice wire for the winding of the surge receiving relay A ι switches on the changeover contact 36 c I and the contact 34 c ι the Circuit for relay X opens, which now disconnects the AC power source from the connecting line at contacts 22 χ and 23 χ. Therefore, only a short current impulse is sent over the connection line to the AC relay / 2 in the transformer Ue 2. The relay E is energized via the contacts 38 er and 6x and closes its own holding circuit via its contact 3 e. Relay E puts its contacts around and over earth, contact 2 e, normally closed contact 10 ^, winding of relay N, battery, earth, relay N is energized.

When the connection line is occupied by the outgoing end of the same through the transformer Ue 1, the initial current surge is, as described above, the; Impulse receiving relay / 2 of the transformer Ue 2 energized at the incoming end of the connection line. The relay / 2 is provided with two windings, one of which, II, is in series with a capacitor Co parallel to the other winding I. By this arrangement, the current flowing through the winding II is ^{shifted by 90 0} in the _t phase, so that. A safe operation of the AC relay / 2 is guaranteed by the short setting current surges. The relay / 2 now includes at its contact 3512 one circuit for the relays previous year and below the contact 3612 circuit for the relay C2: earth, contacts 3612, 37ei, winding of the relay C2, contacts 38cι and 39ei, battery, earth. The relay C 2 responds, closes a holding circuit for itself at its contact 40 c 2 , opens the short circuit via the winding of the relay Ei at contact 38 c 1 and closes its contacts 41c2 and 42 c2. At contact 41 c2 a circuit from the battery is closed via the resistor WS, contacts 45 ni, 4.4.1 2, 43, Ki and 41C 2 to earth. The downstream line selector is assigned via contact 42c2. When the current impulse has ended, relay / 2 drops out and opens the course via the winding of relay Ni at contact 4412. Relay Ni responds and prepares a circuit for relay Ui at contact 46 »1. At the same time, the circuit for relay V "3 is interrupted at contact 3512, which drops out after a short time and energizes relay Ui via its contact 47 ^ 3. This closes a holding circuit for itself at contact 48 u ι, which via contact 41c 2 extends to ground and interrupts the contact μ ι the circuit of the relay Ni. on contact 49 «1, the rush current circuit is for the transmitter 2 in conjunction Ue

standing line selector prepared. When relay C2 responds, the short circuit for relay Ei was canceled by opening contact 38ei, which responds and prepares the short circuit of relay C 2 at contact 50 e 1. The relay E τ remains energized in series with the relay C 2 via this holding circuit during the entire connection.

If the participant now selects the second digit, the relay A 1 is energized with the first current surge via: Earth in the upstream connection device, α-wire, normally open contact 36 c 1, normally closed contact 3211, 33 P ^l > winding of relay A1, battery, ground . Relay A. 1 changes its contact 13αϊ, which closes the following circuit for relay Ui : earth, normally open contact 1301, normally closed contact 18 m, winding [of relay U, resistor Wi, battery, earth. Relay U operates its contacts 1 6m, "" and relay M is energized in the following circuit: earth, normally open contact i6m, winding I of relay M, winding · T of relay U, resistor Wi, battery, earth. About contact 18? » the winding I of the relay U is short-circuited and at the same time the short-circuit of the winding II of the relay U is canceled, so that the relay U remains excited via its second winding and contact 1301. The relays U and M are held during the current impulse. The relays must be adjusted so that the contact 12 α ι has already dropped out again when the contact 22 m is actuated. Relay M moves its contact 22m so that the following number current surges cause relay X to respond with interruptions every time relay A is excited via: earth, current contact 12 «1, working contacts 22»;., 21 n, winding of relay X , Battery, earth. The current surges are transmitted to the transformer Ue2 through the contacts 22.1: and 23 χ. After the last current surge, the relay U is de-energized after the contact i3 <zi has dropped. Relay M is designed as a delay relay and drops out later, so that relay X is again excited via: earth, normally closed contact 23 u, working contacts 22 m, 21η, winding ¹ of relay X, battery, earth.

The AC relay J2 is alternately energized and de-energized by the "current impulses" sent to the transformer Ue 2.

The delay relay V3 is energized via the contact 35 12 and remains activated during each series of impulses. Relay C2 is short-circuited at contact 36/2 with every current impulse, which, however, acts as a delay relay and remains energized during the current impulse series.

In addition, each time relay / 2 responds, the following surge circuit to the line selector occurs: Earth, contacts 491t, 1, 571-2, upper speech line to the surge receiving relay of the line selector after the battery. At the same time, the control battery is connected to resistor W6 to the lower voice line via contact 123 »3. These power surges raise the line selector to the desired decade. The next series of rushes, by which the line selector is set to the particular terminal contact in the relevant decade, is transmitted in the same way as described above.

To initiate the connection means the AC relay / 2 of the transformer must Ue2 a relatively long alternating current surge from the AC - 80 are transmitted source WQ in the transformer Ue. 1 In the present invention, this takes place in a somewhat different manner than in the main patent.

In the group selector, the circuit for the relay C 1 in the transformer Ue ι was interrupted. The relay Ci drops out and closes an excitation circuit for the relay M (winding II) via its contact 37c 1, which actuates its contact 22m, whereby the following circuit is formed for the relay X : earth, break contact 23 u, make contacts 22 «and 2IW, winding of relay X, battery, earth. The relay X connects the alternating current source WQ to the connection line via its contacts 22 χ and 23 χ , and the circuit for the relay X is only interrupted after a relatively long time at contact 2TM, since the relay N is connected to earth, working contacts 5 χ and 1 e has closed its own holding circuit. Only after the relay E, which drops out with a delay, interrupts this holding circuit at contact 1 e and the relay JV then drops out with a delay, the circuit for the relay X is also interrupted.

The long alternating current surge connected to the voice lines via the contacts of relay X excites relay / 2 in transformer Ue 2 , which short- circuits the winding of relay C 2 at its contact 36t2 via contact 50ei. The relay C 2 drops out after a short time and interrupts the holding circuit of the relay Ei at contact 40 c 2. The holding circuit of relay Ui is opened at contact 41 C2. The relay C 2 also opens its contact 42 c 2, whereby the triggering of the line selector is brought about.

It is now the establishment of a remote connection via the connection line with one connected to the line selector

Participants described in more detail. The officer at Fernplatz FPl is given the number of the requested participant in any way. The officer flips the selector switch and inserts the plug St into a free handle FKl. The pre-selector FVW connected to the occupied pawl searches freely for a free transmitter connected to an outgoing connection line in the desired direction, for example U ei . By flipping the selector switch, the battery is applied to the contact η ι via the contact springs 102, 103 and 104, line 110, plug St, pawl FKl, upper switching arms from FVW and via the contact 36c 1 to the winding I of the relay F. ¹ The relay F. responds, opens at its contact 9 / the short circuit via its winding II, so that this is excited in series with relay X via the isolating relay of the FVW. The relay X applies the alternating current source WQ to the left windings of the transformer 24 via its contacts 22 χ and 23 χ , whereby the alternating current relay / 2 in Fig. 2 of the main patent is excited at the incoming end of the connecting line. Relay C1 is excited via contact $ x. The relay C1 closes a holding circuit for its second winding via its contact 35ei, and the winding II of the relay F switches the upper voice wire to the winding of the surge receiving relay Ai at the changeover contact 36c ι and opens the circuit for the relay X at the contact 34c 1, the now disconnect the AC power source from the connection line at contacts 22 χ and 23jtr (first introducing current surge). Relay E is energized via earth, normally open contact 38c i, normally closed contact 6x, winding of relay E, battery, earth and closes its own holding circuit via contact 3 e. Relay E moves its contacts 1e and 2e ; The relay X is excited for the second time via the latter via: earth, make contacts 2, e, 10 f, break contact 2IM, winding of relay X, battery, earth. Relay JV is now excited via earth, working contacts S x, 1 · e, winding of relay JV, battery, earth, which through its contact 21 »interrupts the circuit for relay X. As a result, a second introducing current surge is sent through the contacts 22 χ and 23 χ from the alternating current source WQ via the connecting line to the alternating current relay / 2 at the incoming end of the connecting line. Relay JV closes its own holding circuit at contact 13 κ via earth, working contacts 38 c 1, 13 n, winding of relay JV, battery, earth.

The relay J 2 is energized twice by the two initiating current surges. The relays C2 ,, Ei and V 3 are energized as described above with the first current surge. The relays Ei and C2. are placed in a holding circuit via contact 40 c 2. The relay V3 remains energized during the two initiating current surges, since it is designed as a delay relay. The relay JV1 responds after the end of the first introducing current impulse by opening the short circuit via its winding at contact 44ΐ2. However, relay Ui cannot yet be energized because its circuit at contact 472/3 is open. At the second initiating current surge, relay Fi is energized in the following ways: earth, contacts 41C2, 43MI, 4412, 100MI, winding of relay F1, battery, earth. Relay F1 responds and closes a holding circuit for itself via contact 101/1. Shortly after the end of the second initiating current impulse, the relay V2 drops out and closes the above-described circuit for the relay U 1. When relay C 2 responded, the line selector was occupied via contact 42 c 2.

If the remote operator now operates the dial, the same processes take place as described above for local traffic.

After setting the line selector, as described in more detail in the main patent, the relay D located on the upper speech wire is energized to earth in the line selector. Relay D closes the following holding circuit for itself: battery, contact 117 ^ winding II of D, 120ei, earth. In addition, the battery is applied across the resistor Wd and across the contacts 121 ζ and 122 d to the lower voice line. ^{This energizes relay ^ S 1} via contacts 123z / 3, 124MI, 5 "winding and contact 1252 to earth. It closes a circuit for relay Z at contact 126 s and applies alternating current via contacts 78J and 79.Γ from the current source WQ 1 to the connection line, whereby the relay / 1 is excited at the outgoing end of the connection line, which closes a circuit for the relay H at its contact 129 ^ 1, which excites the relay Q via its contact 130A · and at Contact 131 & battery applies to winding I of relay P. Relay Q closes a holding circuit at contact 1329 for its winding II and for winding II of: Relay Pi ₁ which runs to earth via contact 38 c 1 an indicator SZ located at the remote station FPl in a bridge to the wires of the cord circuit is activated: battery, contact 131 h, winding I of relay Pi, contact 134g, winding of relay B1, lower voice line,

middle switch arm from FVW, pawl spring 109, plug wire 108, line 107, SZ, line 110, plug wire in, pawl spring 112, upper switch arm from FVW, contacts 63c 1, 32ii, 135 / Ί, winding of relay G ₃ contacts 44.ni, 10 f, 2e, earth. When the indicator appears, the officer recognizes that the line selector LW is set and prepared for the test.

When relay Z at the incoming end of the connection line responded, it closed a holding circuit for itself at its contact 1372 and at the same time interrupted the circuit of relay 6 "at contact 125 s. Relay S is bridged via contacts 1382 and 139» ι At the same time, the battery is removed from the lower voice wire by opening the contact 121 s . The relay 5 now opens its contacts 78 s and 79 s, whereby the alternating current source WQ 1 is disconnected from the connection line and the relay / 1 is de-energized At contact 12g i ι this relay interrupts the circuit of relay H, which drops out after a short time and at contact 131 h interrupts the circuit of indicator SZ via winding I of relay P 1. It should also be mentioned that indicator SZ is only switched on during the drop-out delay of the relay H , because then the contacts 3211 and 131 h are closed.

To initiate the test, the officer flips the test switch PS. As a result, the battery is applied to the winding of the relay G via the switch PS, contact spring 141 and 104 cles switch PS, line xio, in, latch spring 112, upper switching arm of the FVW, contacts 36CI, 3211, 135 / Ί, the other end of which is via the contacts 14m, iof and 2 e is connected to earth connection. Relay G responds via this circuit and closes the working circuit for relay M (winding II) via its contact Jg. Now relay X responds via the following circuit: earth, normally closed contact 2311, working contacts 22 m and 21η, winding of relay X, battery, earth. The AC power source WQ is connected to the connecting line via the contacts 22 χ and 23.tr. The relay M also interrupts the circuit for the relay G, which! the circuit for relay M opens again at contact Jg. Relay M drops out with a delay and, by moving its contact 22 m, brings relay X to drop out. Through the contacts χ and 23 λ; the alternating current source WQ is switched off again. To initiate the test, a short current surge is sent over the connection line. The further test procedures take place in the same way as described in the main patent.

The four-bond devices are also released in the same way as is described in local traffic and in the main patent.

Claims (3)

Patent claims: 1. Circuit arrangement for telephone systems with dialer operation and production of connections of different values via the same connection devices and lines according to patent 543 948, characterized in that a relay arrangement (M, U) which is under the influence of setting current surges is assigned to a current impulse transmitter (Uei) arranged at the outgoing end of the connection line is that the current impulse transmission relay (X) only after receiving brings one or more number surges to effect and after completion of the current surge the transmission series of a corresponding to the initially suppressed surges number of additional current pulses by the transmission relay (X) causes. go 2. Circuit arrangement according to claim i, characterized in that the relay arrangement (M, U) is switched on by the first number current surge recorded by the current surge receiving relay (Ai) and prepares the circuit for the transmission relay (X) , which is only closed when a further current surge is received, will. 3. Circuit arrangement according to claim ij, characterized in that the Duration of the additional current impulse is determined by the release time of the delay relay (M) of the relay arrangement. 1 sheet of drawings BERLTK. PRINTED IN BER HEiCHSDRUCKERET "Rf- '·