DE1013701B - Circuit arrangement for dialers with one direction of movement in telecommunications, in particular telephone systems - Google Patents

Description

GERMAN

The invention relates to a circuit arrangement for voters with a direction of movement which search for a free line of the marked group after their setting for a group contact, for telecommunications, in particular telephone systems.

An arrangement of this type has already become known, in which the setting of the voter is carried out two relays are controlled, one of which only controls the free selection within the groups, while the other relay comes into effect during the controlled selection. The said relays are influenced by a special control arm of the voter. In this known arrangement is on At the end of each group a special rest step is provided, on which the activation of the free choice initiating relay takes place. This latching step at the end of each group can, as is known for other groups Arrangements provided locking steps, at the beginning of each group not with outgoing lines be wired.

The object of the present invention is to reduce the complexity of the control relay and the switching arms to reduce such arrangements and at the same time a better exploitation of such voters enable by outgoing lines both to the switching positions in which group test contacts as well as to the last switch positions of each group. This is achieved in that a control relay switched on by a fast switching test relay responds with a delay, the test relay subsequently switches off the group test arm and switches it on to the individual line test arm and that the test relay drops out during this switchover.

Through the instantaneous activation of a control relay on the group test contacts and the it is this effected switchover of the test relay from the group test arm to the single line test arm possible without the need for a second control relay and a control switch arm of the selector to connect outgoing lines to the group test contacts. Since this is the switchover of the test relay The control relays do not operate via a control switch arm, but only as a function of the test relay is excited, outgoing lines can also be connected to the last contacts in each group.

According to a further embodiment of the invention, the control relay receives its pick-up delay at the same time as it is switched on, one of its windings is short-circuited. After the However, the test relay pulls its armature fully on without delay.

The response delay of the control relay ensures that the test relay during the switchover from the group to the individual circuit arrangement
for voters with one direction of movement

in. telecommunications,
in particular telephone systems

Applicant:
Siemens & Halske Aktiengesellschaft,

Berlin and Munich,
Munich 2, Witteisbacherplatz 2

Dipl.-Ing. Ernst .Endorf and Karl Kirn, Munich,
have been named as inventors

line test poor prolonged time between contact opening and closing with certainty drops. the The pick-up delay is canceled so that after the test relay has dropped out, the motor does not stop before testing the Switching step on which the group test contact is located starts up.

An auxiliary test relay switched on by the test relay opens the when the blocking and holding circuit is closed formed short circuit of the response winding of the test relay, so that this during the switchover drops immediately from group to single line test arm.

An exemplary embodiment of the invention is shown in the drawing. There are only those for understanding the invention shown absolutely necessary switching means and circuits.

Fast-moving, single-motor driven voters are assumed. The occupancy relay and the potential to the stator coils of the Selector motor applying control relays are not shown. Likewise, it is not illustrated how that Setting of a marking device that characterizes the group test contact of a selected traffic direction and the group test contact is marked.

Of the switching arms of the voter only Gruppenprüfarm and who Einzelleitungsprüfarm ca are shown with part of the swept by them contact rows.

709 657/147

After the selector has been assigned, the contacts 1 c and 2 c are closed by the assignment relay C, not shown. The test is prepared on contact Ic and the switchover from group test arm da to the single line test arm ca on contact 2c.

By a series of current impulses, for example consisting of two current impulses, emitted by the calling station or by a register upstream in the connection path; the setting of the marking device takes place. Subsequently, responsive to an unillustrated control relay D, which opens its contact 3d and its contacts 4 includes d and 5d. A circuit for the stator coil M 1 of the selector motor is closed at contact 4 a ":

1. +, Ad, ..., ml, .. '., Ml, -.

The voter starts up in a known manner and opens or closes its cam contact ml or w2. If the voter arms of the voter have adjusted to the first bank contact, circuit 1 is interrupted and a circuit is closed in which the stator coil M 2 of the voter motor is switched on:

2. +, 4a ", ..., jm2, ..., MI, -.

The voter looks for the highlighted group contact HR2 of the line group G2. When this switch position is reached, the test relay P responds:

3. +, lc, Sd, GL, 6ph, IP, IIP, 7m, da, HRZ,

The test relay stops the selector in a known manner by switching on the second, non-energized stator coil. Is z. If, for example, cam contact m 1 is closed on group contact HR 2 and cam contact ml is opened, circuit 1 is effective again for stator coil M 1, while stator coil M2 is in the following circuit:

4. +, 4 rf, ..., ml, ..., Sp, M2, -.

40

In addition to contact Sp , the test relay has also closed its contacts 9p, 10p, Up and 12 ^. The auxiliary test relay Ph is switched on parallel to the high-resistance pickup winding I of the test relay P:

5. +, lc, Bd, GL, ₁ IIP, Tu, da, HR2,

It opens its contact 6 ph and thus the short circuit of the high-resistance response winding I of the P relay and closes its contacts 13 ph and 14 ph. The circuit for the relays P and Ph is thus in a new way:

6. +, Ic, 9p, 13ph, Ph, UP, Tu, HR2, ..., -.

The control relay U was switched on by closing contact 12 p :

7. +, 2c, 12p, Up, IU, -.

Since outgoing lines are connected in the switch positions of the selector in which group contacts are located, a test must also be able to be carried out via the individual line test arm in these switch positions. Before switching over from the group to the individual line test arm by the Z7 relay, it must therefore be ensured that the settling time of the selector arms has ended. The t / relay is delayed on by short-circuiting its winding II at the Up contact. After opening the contact Tu and before closing the contact 15 m, the test relay P and thus the auxiliary test relay Ph drop out. By opening the contact 11 p , the response delay of the control relay U is canceled so that it can pull through suddenly. Since the contact m closing a holding circuit was closed at the same time as the 7 m contact was opened, the iJ relay picks up fully in a new circuit after the P relay has dropped out:

c, 16m, UU, IU, -.

60 The contact 15 u is closed and the test via the single line test arm approx . If the outgoing line connected to the bank contacts (17, ...) corresponding to the group contact HR2 is free, the test relay P responds again immediately:

9. +, Ic, 3d, GL, 6ph, IP, IIP, 15m, ca, 17,

By closing the contact Sp again , the selector is held in this switch position, and after the P / i relay has responded, the speech wires are switched through via contacts (not shown).

If the outgoing connection line connected in the switch position of the group contact HR2 was not free, the selector starts up and searches for a free outgoing line within group G 2, on which it is shut down in a known manner by the test relay.

Claims (6)

PATENT REQUIREMENTS: 1. Circuit arrangement for voters with a direction of movement, which after their setting on a group contact are looking for a free line of the marked group, for telecommunication, in particular for telephone systems, characterized in that a control relay (U) switched on by a fast-switching test relay (P) responds with a delay, the test relay (P) subsequently switches the group test arm (da) off and on to the single-line test arm (ca) and that the test relay (P) drops out during this switchover (7 μ / 15 m). 2. Circuit arrangement according to claim 1, characterized in that the control relay receives a pull-in delay due to the short circuit (11 p) of a winding (II U) occurring at the same time as switching on (12 p). 3. Circuit arrangement according to claim 2, characterized in that after the test relay (P) has dropped, the control relay (U) fully attracts its armature without delay. 4. Circuit arrangement according to claim 2, characterized in that a contact (16 m) of the control relay (! 7), which closes a holding circuit for this, simultaneously with the opening of the test relay (P) from the group test arm (da) disconnecting contact (Tu ) is closed. 5. Circuit arrangement according to claim 1, characterized in that one of the test relay (P) switched on auxiliary test relay ( Ph), which during the switching of the test relay (P) from the group test arm (da) to the single line test arm (ca) together with the test relay (P ) drops, the test circuit opens (6 ph). 6. Circuit arrangement according to claim 5, characterized in that when the test circuit is opened (6 ph) by the auxiliary test relay (Ph) the short circuit formed by the test relay (P) when closing (10p) of the blocking and holding circuit The end of the response winding (IP) relay (P) is canceled. of the test Documents considered: German Patent No. 830 529. 1 sheet of drawings