DE1015066B - Circuit arrangement for relay pulse generators for generating constant pulses in telecommunications, especially telephone systems - Google Patents

Description

In telecommunications, especially telephone systems, a large number of relay pulse generators have become known, that work with very little effort. So it is z. B. conceivable with a single switched as a self-interrupter Relay to generate pulses.

Such circuits are used to generate pulses of constant length at constant intervals however, not to be used, as they are highly voltage-dependent. A flawless and constant impulse but must be required when a pulse generator as a central clock, z. B. for time zone counting, Should be used. On the other hand, with such clock generators, it is also worth more effort because they are arranged centrally and, for example, supply an entire office with a certain time cycle.

It is already an arrangement (cardiac circuit) for generating time clocks with constant pulse and The length of the pause has become known, in which, in addition to its own pulse relay, there is a pulse and a pause control relay and a common auxiliary relay is provided. In this known arrangement, the control relays are instantaneous switched on; when they are switched off, however, they drop into a capacitor charging circuit with a delay. The pulse relay and the pulse control relay are under the influence of the auxiliary relay, the pause control relay the influence of the pulse control relay and the auxiliary relay under the influence of both control relays. Two essentials Disadvantages of this known arrangement are that they are used to generate short pulses and / or Pulse pauses useless and can only be regulated within narrow limits.

The object of the invention is to avoid these disadvantages of the known arrangement.

This is achieved in that each control relay is designed as a polarized relay with two armature rest positions has at least two windings, the excitations of which counteract each other, and a rectifier prevents these windings from being excited in the same direction.

According to a further embodiment of the invention, the excitation of two windings in the same direction is one Rectifiers preventing control relays in series with one of the windings so that no induction current is passed through them can flow. The rectifier causes attenuation of the circuits, which means faster work the relay is enabled.

An exemplary embodiment of the invention is shown in the drawing. A pulse generator is shown, consisting of a pulse relay /, the control relays A and B as well as a pulse and a break auxiliary relay C and D. The two control relays A, B and the pulse relay J are polarized relays with the contacts in rest position on both sides. Each of the three mentioned relays is equipped with two windings, the beginnings of which are un-circuitry

for relay pulse generator for generation

Constantly timed pulses in telecommunication systems, in particular telephone systems

Applicant:

Siemens & Halske Aktiengesellschaft,

Berlin and Munich,
Munich 2, Wittelsbacherplatz 2

Dipl.-Ing. Walter Voithenleitner, Munich,
has been named as the inventor

even, 1, 3, and ends with even, 2, 4, numbers.
One of the polarized relays will be referred to as positive excitation in the following when the excitation of the one winding connected with its winding start at positive potential is greater than that of the winding with its winding start at negative potential. In the following, negative excitation is used when the excitation of the one winding which has its winding start at negative potential is greater than that of the winding which has its winding start at positive potential. With positive excitation, the contacts of relays A, B and / keep the position shown in the drawing. If the relays are excited negatively, they switch their contacts,

d. that is, they open the contacts shown closed in the figure, and vice versa.

In the idle state, a circuit is closed for the pulse relay /

1. +, lan, (1) 1 / (2), D, -.

The start of the winding, 1, of the / relay is at positive potential, i.e. it is positively excited and accordingly keeps its contact 2i - as shown in the drawing - closed. The auxiliary break relay D in circuit 1 has responded and has closed its contacts 3d, 4d and 5d . The capacitor Ka is charged via

0 j- ^U ' ^Ka ^ a

2. + ,, 5d, 6, -.

The resistors 6 and 7 as well as the voltage divider, consisting of the resistors 8, 9 and 10, are

709 560/152

selects that the rectifier Ga is loaded in this switching state in the reverse direction and accordingly no current flows through the winding 14 of the control relay 4. In contrast, winding 114 of the 4-relay is switched on:

3. +, Ad, (4) 114 (3), 11, -.

Since there is a negative potential at the beginning of the winding 3 of the winding 114, the relay 4 is negatively excited. It has accordingly opened its contact 12 ″ and closed its contact 13 ″. The winding I / of the pulse relay / lying in circuit 1 is therefore not short-circuited via contacts 12 ″, lan. The capacitor Kb is charged:

4. +, 14, Kb, (4) IIB (3), 15, -.

The .B relay is positively excited via its winding I, so that, as shown in the figure, its contact 16 δ is closed and its contact 17 δ is open: If the charge reversal of the capacitor Ka has progressed so far that the rectifier Ga becomes permeable , in addition to its negative excitation via winding ILA, relay A receives a positive via winding 1.4:

11. +,

7, Ga, (1) 14 (2)
87-9

119, 10,

14, Gb, (I) IB (2)
18, 119

II19, 20, -.

To start up the pulse of the contact l "w opens and the contact 21 to be closed. Circuit 1 is interrupted at contact lan , the auxiliary pause relay D drops out. A circuit for the pulse auxiliary relay C is closed at contact 21 «»:

6. +, 21 "", 16 δ, C, -.

When the D relay drops out and the contacts Ad and Sd open, circuits 2 and 3 are interrupted. The capacitor Ka is discharged in a new circuit and recharged in the opposite direction:

7. +, 7, Ka, (4) 114 (3), 11, -.

At the beginning of this charge reversal of the capacitor Ka , the winding 14 of the 4-relay does not yet carry any current, since the rectifier Ga is still being used in the reverse direction. As before, the 4-relay is negatively excited via the winding 114, so that the contact 13 ″ continues to be closed and the contact 12 ″ remains open.

In circuit 6, the C relay responds and closes its contacts 23 c, 24 c, 25 c. A new circuit for the capacitor Kb is closed:

24c, ι

After further reloading of the capacitor Ka in the circuit 7, the positive excitation of the relay 4 is greater than the negative, so that its contact 13 "opens and its contact 12" closes. The circuit 10 is interrupted and the C relay drops out. The D relay is switched on again at contact 12 «:

12. +, 12 ", D, -.

After the C relay has dropped and the contacts 23 c, 24 c, 25 c open, the circuits 8 and 9 are interrupted. The capacitor Kb in the circuit 4 is recharged again. At the beginning of this recharging, the winding I B of the B relay is not yet carrying any current, since the rectifier Gb is still being used in the reverse direction. As before, the B-relay is negatively excited via the winding II B , so that the contact 17 δ is closed, the contact 16 δ remains open. In circuit 12, the D relay responds and closes its contacts 3d, Ad and Sd. The circuit 2 is thus closed again for the capacitor Ka , in which this capacitor is also recharged again.

By closing the contact 5 d , the circuit 11 became ineffective, since the rectifier Ga is again stressed in the reverse direction in this switching state. The 4-relay now receives negative excitation in circuit 3 via its winding 114, so that it opens its contact 12 ″ and closes contact 13 ″. The circuit 12 is interrupted. However, a new circuit is closed for the D relay, in which it continues:

14th

25c, 26, -.

In this circuit, the capacitor is first discharged and then charged in the opposite direction. By closing the contact 25 c, the circuit 5 became ineffective, since the rectifier Gb is claimed in this switching state in the reverse direction. The B-relay now receives negative excitation via its winding IIS:

9. +, 24c, (4) II B (3), 15, -.

It opens the circuit 6 at its contact 16 δ and closes its contact 17 δ. The pulse auxiliary relay C lies in a new circuit:

10. -I-, 13 ", 23c, (4) 11 / (3), C, -.

In this circuit, the / relay is also excited via its winding II /, namely negatively, since the beginning of the winding 6g, 3, has a negative potential. The pulse relay / opens its contact 2i and closes its pulse contact 27 ^, via which it sends a pulse to a downstream device, e.g. B. a relay pulse counting chain outputs.

13. +, 21 «», 176, 3d, (1) 1 / (2), D, -.

In this circuit, the / relay is again excited via its winding I /, positive as in circuit 1, so that it terminates the first pulse by opening its contact 27i and closing its contact 2i.

The pulse length can be set to a desired value by means of the resistor 26, by changing the resistance ratio 8.19 to 119, 10 and by changing the capacitance of the capacitor if «. The length of the pause can be changed accordingly at the resistor 6, the voltage divider 18,119 to II19,20 and at the capacitor Kb . If, in particular, short pulses and pulse pauses are to be generated, it is easily possible with the arrangement according to the present invention to generate pulses and pauses of only 10 ms in length.

Claims (3)

PATENT CLAIMS: 1. Circuit arrangement for relay pulse generators for generating constant pulses with a pulse and a control relay influencing the pause length in telecommunications, in particular telephone systems, characterized in that each control relay (A, B) is designed as a polarized relay with two armature rest positions, at least two Has windings whose excitations counteract each other, and a rectifier (Ga or Gb) prevents these windings from being excited in the same direction. 2. Circuit arrangement according to claim 1, characterized in that the rectifier (Ga or Gb) is in series with one winding (1 ^ 4 or 15) of the control relay (A or B) and during the over another winding ( HA or 115) of the control relay (A or B) taking place charging of a capacitor (Ka or Kb) becomes permeable. 3. Circuit arrangement according to claim 2, characterized in that each control relay (A, B) is assigned an auxiliary relay (D, C) , the charged condensate Sator (Ka or Kb) via contacts (id, Sd or 24c, 25 c) of these auxiliary relays (D or C) is discharged and charged in the opposite direction and the rectifier (Ga or Gb) is stressed in reverse direction during this reversal. Considered publications:
German Patent No. 861 272;
USA. Pat. No. 2,685,052. 1 sheet of drawings ® 709660/152 8.57