DE626395C - Circuit arrangement for current surge transmitters, in particular with devices for current surge correction in telecommunications systems - Google Patents

Description

GERMAN EMPIRE

ISSUED ON FEBRUARY 25, 1936

REICH PATENT OFFICE

PATENT LETTERING

JKi 626395 CLASS 21a ³ GROUP 67

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

Patented in the German Empire on June 11, 1932

The present invention relates to a circuit arrangement for impulse transmitters, especially with devices for current surge correction in telecommunication, esp special telephone systems with dialer operation. In such transformers the individual Switching operations are often transmitted by power surges of various lengths. For example the occupancy and the selector setting is controlled by short power surges, the triggering by initiated a long electrical surge. Such impulse transformers now have the disadvantage that under certain conditions when initiating a certain switching process, z. B. if another, unintended switching process is triggered before the selector setting is completed, z. B. further setting of the voters and thus false calls is effected.

The solution to the problem, the erroneous setting of voters by false impulses and Preventing false calls from subscribers caused by this has already become known. However, the known arrangements require a relatively large amount of switching means and cumbersome Circuit arrangements.

The present invention avoids these disadvantages by providing the surge transfer relay only effective when an auxiliary relay influenced by the surge receiving relay drops out which is due to its excitation when a long current surge arrives Impulse circuit brings the relay closing the relay to be passed on.

The present invention can be used with particular advantage in current impulse transmitters Use devices for current surge correction, in which the to be transmitted Passed power surges with a duration independent of the received power surge will.

The accompanying drawing shows an embodiment of the invention.

When the transformer shown is assigned, a short alternating current pulse arrives via line L ₁ , which briefly excites the alternating current relay /. Relay / energized via its contact 18 i the auxiliary relay K. Due to the energization of the relay K following circuit for the occupancy relay S is formed: earth contacts 23 k, 22 u, winding of the relay S, contact 19 s, resistance Wi, battery, Earth. The relay S remains on its contact for 24 s after the relay K has dropped out. When the relay S responds, the contact opens for 19 s and the short circuit for the relay U is interrupted. The relay U responds in the following circuits: earth, contact 24s, winding

*) The patent seeker stated as the inventor:

Dr.-Ing. Johannes Boysen in Berlin-Siemensstadt.

development of relay S, winding of relay U, resistance Wi, battery, - earth. Relay U closes its contact 21 u and thereby prepares the trip. - - When the relay K is energized, the delay relay V is energized in the following circuits: earth, contact 15 k, winding of relay V, battery, earth. Relay V closes its contact 10 ν and thereby prepares a circuit for the impulse relay H. This circuit is closed when the occupancy pulse has ended and the relay / and relay K have dropped out. Relay H then responds in the following circuits: earth, contacts 14 k, 10 v, 12 q, winding of relay H, battery, earth. By energizing the relay if during occupancy, excitation circuits for the relays M and Q of the current surge correction device are closed, which are later / described. The response 'of the impulse relay H, which passes the current impulses over the line ig through its contact 2 h , is initially without effect, since the two wires of the line Z, ₂ are still ■ interrupted by the contacts 3 β and 4 e. The energization of relay H creates the following circuit for delay relays E and T : - earth, contacts 7 s, 5 · h, windings of relays E and T, battery, earth. The two relays remain independent of relay H via contact 6 t. Relay E switches by closing its contacts 3 e and 4 <? the two wires of the line Z ₂ through. Relay T closes through its contact 1 1 on the choke coil Dr a loop through which the downstream selector, z. B. a selection is occupied. The preselector runs.an and is in a known manner on a free number current surge receiver, z. B. an I. group selector.

When selected, the surge receiving relay / is alternately energized and de-energized by short alternating current _{surges arriving via the line X 1.} Relay / brings the relay K, relay K closes the occupancy relay S via contact 23 k for each current surge, but the relay 5 holds during the short current surges of a series of current impulses. As already mentioned, the first current surge of the relay K turns the delay relay V excited, which is also held during a series of impulses. When relay K drops out at the end of each current impulse, relay H is energized in the following circuits; ^ earth, contacts 14 k, 10 v, 12 q, winding of relay H, battery, earth. With its contact 2 h, relay H interrupts the loop running through contact 1 1 and choke coil Dr and thereby causes the surge receiving relay in the first group selector to drop out in bursts. The first group selector is set according to the current surges. As soon as the relay H has been energized after the relay K has dropped out, it is bound in the following circuits: earth, contacts 9 h, 12 q, winding of relay H, battery, earth. The energization of the relay H causes the energization of the relay M "in the following circuits: earth, contacts 17 h, 16 q, winding of relay M, battery, earth. Relay M closes the following circuit for relay Q: earth, contact 8 m, winding of relay Q, battery, earth. After relay Q has responded, relay H remains in the following circuits: earth, contacts 9 h, 13 m, winding of relay H, battery, earth. Q remains independent of the relay M in the following circuits: earth, contacts 9 h, 11 q, winding of relay Q, battery, earth. Relay Q interrupts the circuit for relay M through its contact 16 q , relay M occurs and interrupts through its contact 13 m the Holding circuit for the impulse relay H; the impulse has ended.

When triggered, a long alternating current surge arrives via line L ₁ and excites the surge receiving relay / for a longer period of time. Relay / brings relay K, relay K shorts relay 5 via earth, contacts 23 k, 21 u for a longer period of time. Relay S then falls down and stops by its contact 7 s the circuit for those relay E and T. After the drop of the relay S and within the decay time of the relay T, the relay K kept energized in the following circuits independently of the relay /: Earth, contacts 25 s, 20 t, winding of relay K, battery, earth, in order to ensure that relays E and T drop out before relay K drops out. When relay E drops out, contacts 3 e and 4 e are opened and the loop to I. group selector is permanently interrupted. The permanent interruption of the loop initiates the triggering of the group selector and the subsequent voters in a known manner. After the relay T drops out, the relay K also drops out, and now the relay H is briefly excited again in the circuits already described: earth, contacts 14 k, 10 v, 12 q, winding of relay H, battery, earth. Relay H briefly opens its contact again for 2 hours. This short opening of the contact 2 h, which results in the transmission of a current impulse with an existing loop circuit, has no effect on the 1st group selector in this case, since the two wires of the line L ₂ through the contacts 3 e and 4 e beforehand have already been interrupted.

Claims (1)

Patent claims: i. Circuit arrangement for current impulse. transmitters, especially with facilities for current surge correction in telecommunications, In particular telephone systems with dialer operation, characterized in that the impulse relay (H) only becomes effective when an auxiliary relay (K) influenced by the impulse reception relay (/) drops out, which, when a long impulse arrives, closes the relay ( T) brings to waste. ίο 2. Circuit arrangement according to claim i, characterized in that the auxiliary relay (K) influenced by the surge receiving relay, when energized by means of a normally open contact (15 k), acts on a delay relay (F) which, when the auxiliary relay (K) drops out, acts on the circuit to be closed by means of a normally closed contact (14 k) the impulse relay (H) prepared. 3. Circuit arrangement according to claim 1, characterized in that the auxiliary relay (K) influenced by the surge receiving relay acts upon its excitation on the trip relay (S) in such a way that the latter is kept excited by short current surges, but is brought to waste by a long current surge. 4. Circuit arrangement according to claim 1 and 3, characterized in that the current impulse transmission relay (H) passes on short current surges (e.g. for selector setting) through short interruptions of a loop circuit, while a short interruption of the loop circuit when receiving a long current surge (z. B. for the Tripping) is prevented by the fact that the auxiliary relay (K) influenced by the surge receiving relay causes the triggering relay (S) to drop out when it is excited and permanently interrupting the loop circuit before the surge relay (H) is excited. 5, circuit arrangement according to claim 1, characterized in that the excitation of the auxiliary relay (K) is maintained after receiving the long current impulse until the relay (T ") which closes the current impulse circuit drops out, in that the latter creates an excitation circuit for the auxiliary relay ( K) closes. 6. The circuit arrangement according to claim 1, characterized in that the pressure maintained on the recording of a long current pulse excitation circuit of the auxiliary relay (K) except by closing the rush current circuit relay (T) is closed by a relay (S) formed by the auxiliary relay (K) is caused to drop when a long current pulse is received, thereby causing the relay (T) which closes the current pulse circuit to drop. . 1 sheet of drawings