SU34621A1 - Relay Generator - Google Patents

Description

 For automatic telephone exchanges and often for manual stations, it is necessary to make a call to the subscriber to have an alternating current of about eighty-hundred volts. For large-capacity stations, a special aggregate is usually installed for this purpose, for small-capacity stations, a machine inductor with an electric motor, or a rotator. These devices are difficult to manufacture and exploitation. In addition, the rotator has a number of disadvantages, such as, for example, low useful power; the maximum useful power is obtained at a load of two thousand, which is not beneficial for medium power stations; finally, as the load increases, the frequency decreases, since the transformer of the rotator is on a common core. The present invention aims at eliminating the aforementioned disadvantages by using a relay generator with a transformer for sending pulses, the primary winding of which is powered by a stationary battery with direct current interrupted by a relay controlled by two other auxiliary relays.

The drawing shows a diagram of a: unit .V is

The device is equipped with three relays, and bypassing arcing suppressors Ktt Rs, tt fte. At the beginning, relays Ri and are attached to the terminals of the current source (see drawing). while the circuit of the relay through the contacts of the relay is open. Relays / 1 and 2 have approximately the same resistance (on the order of 600 ohms), and relay Ri has a much lower resistance (on the order of 100 ohms). The device is connected to the primary winding of a transformer shunted by a spark-arresting capacitor Q; The secondary winding of this transformer, in order to smooth the currents in the secondary circuit, is also shunted by the capacitor Cj. Resistors (and, like), are resistive.

When the battery minus is applied, for example, by calling the turnips or the interrogation key at the call position, the RI relay responds quickly and with its contacts, disconnects the positive from the winding of the Rs relay, thereby switching the Rz relay RZ on the current source circuit. does not have time to work. Relay R, when turned on by its contacts, relay i triggers (having a circuit through relay R and locks relay Ri. At this time, the relay also does not come into effect, due to the fact that the current passing through its winding, provided that this winding is connected in series with winding the relay R is not enough to attract them. When blocking the relay Ri, the measles of this relay disappears and, by blocking the relay / 2, delivers a “clean plus” to the end of the relay coil, then releases its own measles relay, etc., until until the flow of the minus stops.

Thus, the relay R will operate at the same frequency as the relay R v Ri with its contacts will connect the minus to one end of the transformer primary winding. Since the midpoint of the primary winding is connected to the plus of the current source, an electromotive force will be induced in the secondary winding and pulses of alternating current will flow into the circuit connected to it.

The subject matter of the invention.

A relay pulse current generator, characterized in that the winding of the RZ relay, which connects one or another section of the primary winding of the transformer to the DC circuit, is connected to the auxiliary relay R and auxiliary relay coil, and connected to a wire supplying one of the battery poles to the relay RI and the relay core, the resistance of the windings of which relays and their connection to the battery poles are made so that after the relay 1 trips, the relay R operates, but the relay triggered only after Oh, how the relay blocks the RI relay, which in turn blocks the R relay.

Radar .

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