SU61169A1 - Device of a chain of the otboyny relay of devices DTS - Google Patents

Description

The bumper relay of the group-finders and the linear connector of the automatic telephone stations, after the subscriber who called the station, hung up the handset on the device lever, releases and closes the lead circuit of the corresponding searcher. At the same time, the burglary relay should not react to short-term interruptions of the subscriber loop or connecting loop during dialing. Therefore, the bounce relay has a copper sleeve or washer, which makes it slow to release.

FIG. Figure 1 shows a conventional breakaway switching circuit; in fig. 2-proposed scheme.

FIG. 1 and 2, the following notation is accepted: L-pulse relay; B-relay, C-series relay; A searchable EM-electromagnet fixing a digit dialed by a subscriber, D D-clips of a subscriber or connecting line.

When the tube is picked up, the impulse relay / 1 is triggered and its contact a closes the circuit of the burglary relay B. When releasing the relay A during dialing, the burglar relay B does not have time to release its own contact and closes the circuit of the electromagnet of the EM finder through the low-impedance delayed serial relay C and contact b relay / 1.

Upon completion of sending this pulse train, relay A is again energized and turns on relay B.

When the subscriber hangs up the phone, relay A releases its measles and after it releases its measles relay B, which closes the circuit for bringing the device to its initial position (not shown in Fig. 1).

In existing group-finder and linear connector circuits, the load on the bouncing relay reaches up to eighteen springs. Due to such a large load, the bumper relay, despite the presence of a copper sleeve, does not work satisfactorily, i.e., it starts releasing measles during dialing. This phenomenon is not explained.

No. 61169-2 inadequate deceleration of the burglary relay for release, and the fact that during dialing this relay B demagnetizes faster when the serial relay is released, than magnetized during the latter's operation.

Thus, when dialing, for example, the digits O (corresponding to ten pulses), the magnetic flux in relay B decreases with each pulse and, finally, starting with a certain pulse, relay B begins to release and disrupts the connection establishment process.

The proposed breakaway circuit device eliminates this disadvantage by increasing the release time and speeding up the magnetizing process of the breakaway relay during dialing.

This is achieved by using in the breaker relay B, in addition to the main winding /, the second low impedance winding // (Fig. 2), which is powered through the quiet contact of the pulse relay .4 and creates ampervitki, insufficient Auxiliary to hold this relay when the pulse relay is long released.

After the relay A triggers (Fig. 2), the relay B triggers through its contact, receiving power to the winding /.

When relay A is released during dialing, the working circuit of the electromagnetic circuit of the EM finder is closed through a contact to relay A, contact a, relay B, its winding // (low-voltage) and relay C.

Thus, when the relay L is released, the winding / relay B loses power, but the winding // at the same time receives a thread, which creates an additional magnetic flux, and thereby facilitating the magnetization of the relay B, increases the release time of this relay, i.e., ensures reliable holding relay during dialing.

The number of ampere turns created by the winding // relay B when releasing relay A must be such that relay S cannot hold this winding if relay A releases for a long time.

Subject invention

The device of the breaker relay circuit of the instruments of the automatic telephone station, characterized in that, in order to increase the release time and speed up the process and to react the breaker relay during dialing, the latter has a second impedance winding, which receives power through the quiet contact of the pulse relay and creates ampere turns insufficient for hold this relay when the pulse relay is released.