SU29194A1 - Device for activating a relay connected to a telegraph circuit in a direct current circuit - Google Patents

Description

By inserting one or several electric lamps with a metallic filament in series with a relay winding into the local battery circuit, it is possible to slow down its operation with appropriate adjustment of the latter. KdTbpbe is achieved by the fact that the resistance of the filaments of these lamps increases significantly during the incandescence NepepbiBa current, draw it when, following the closure of the circuit by the battery will be different: the shorter the break, the greater the resistance of the lamp and the less current will go chain.

The present invention is based on the use of this phenomenon and is intended for receiving outgoing signals in telegraph devices.

In FIG. Figure 1 shows the dependence of the resistance of GET electric lamps on the strength of the current flowing through them; FIG. 2 and 3 schemes of calling devices in telegraphic translations using a relay.

A device whose circuit is fogged out in FIG. 2, consists of two half-relay relays, for example, SiYyens and ordinary call 5 with an electromagnetic mechanism

one bell cup. To the winding of the PE II, successively through; 1e, the incandescent bulbs occur plus the local battery, and to the contact J via a fuse, there is an e-minus. The anchor of the relay II is connected via a light bulb d with a carbon filament and the bell B is connected to the contact 2 of relay I and, moreover, via a signal light bulb with a ground. I

Relay I is adjusted to the neutral position of its core, and relay II is adjusted so that its measles are at idle contact 4 and circulated to working contact 3 at a current strength that went through the circuit after a preliminary break for 1 time .

The entire device is included in the local battery circuit, branched off from the corr A of the relay through the resistance. In the circuit: battery plus, winding II, pin 7, relay I relay and ground both during telegraphic work and during rest the current is insufficient to transfer the relay relay 11 to contact 3.

For a call, the end station presses a key for a defined period of time, as a result of which

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all the transmission points of the battery circuit at the contact / relay I will break and the resistance of the light bulbs a to b, due to their partial cooling, will decrease to such an extent that upon subsequent short circuit, the current will pass through the winding of relay II with a force sufficient to: pinch the pin J and close with the.-most chain signal lamp with.

On subsequent presses of the X key, the end station may, due to the closure of the bell circuit at pin 2 of relay I, call any translation with the help of a conventional ring signal -5. At the same time, the other translations that do not belong to the call can turn off their call and a signal lamp, since in this case the measles of relay II, under the influence of the battery, will contact pin 4 and open the signal circuit.

If the call chain is connected to the ground, both signals are blocked during the call: optical and sound, which are terminated by pressing the button; fei.

By connecting the signal lamp circuit with instead of ground to contact 2 of relay I, the calling station has the ability to send both signals simultaneously with a more or less long key press; optical and sound, which can also be stopped by pressing the j button.

FIG. 3 Select the scheme of a simpler ringing device, in which instead of II a shut-off valve from a telephone switchboard is taken. In this case, the signal is not obstructed, since the drain valve serves as an optical indicator for the called broadcast.

The subject matter of the invention.

Claims (1)

1. A device for actuating a relay included in a telegraph circuit according to a constant circuit, which is different in that, in order to establish whether the relay is dependent on for a break, oh, the relay, in series with ei; o winding , one or several electric lamps with metallic filament are included. 2 ,. With the device according to claim 1, assigned to receive a ringing signal in telegraph devices, the use of a push-button switch k served to return the relay II to its original position by resetting its winding (Fig. 2). /: 3. At the device according to clause 1 and 2, the use of signal devices D s / included in the circuit, installed by relay II, is parallel to the calling alarm device when the I relay of JtoHTaKTa /, which controls the activation of relay P, is thrown to pin 2 (Fig. 2 and 3). OAWV. FIGURE 1. o / i 5 10 iS 2l as 30 WQ /, fffTTH fwn fig 3.