SU2299A1 - Telephone translate - Google Patents

Description

The subject of the present invention is an automatically regulated telephone translation system. those. a system that does not violate the two-way reinforcement of pfegors over a two-wire line, even if one of the shoulders changes its retarding resistance several times over the percentage norm that is permissible with an ordinary circuit. In the proposed telephone translation, additional regulating voltages of the circuits are used in the presence of special main circuits in differential closed cores. It is possible to apply this system on lines that are in poor condition and on terminal central stations in the absence of the necessary supervision.

, FIG. 1, 2, 3, 4, and 5 depict diagrams of five variants that clarify the proposed telephone translation (Figures 1-5 depict mono-translation, since duplex translation is, as is well known, mutually reinforcing conversation by two mono-translations with the replacement of one of their shoulders with an artificial line). The proposed telephone translation consists (Fig. 1) of a differential transformer having an average core 1 and two extreme 2 and 3. On the core / the primary wrap 4 is wound, fed by telephone amplified currents from an aggregation unit of thermal amplifiers 5 with indication of the arrow of the amplification process . The transformer cores 2 and 3 are each equipped with a pair of secondary windings 6, 7, 8 and 9, identical with each other, with windings 6 and 8 connected in parallel to the arm, and windings 7 and 9 to the arm Is- iCurrent to be amplified, t. -e that are received by the shoulder or the shoulder ./7, 4 are fed to a special receiving transformer 70, consisting of a circular winding / 7, connected to the wires. Wires., In this case must be connected by a jumper 12.

Since the retarding resistance of the arm LL due to linear leakage is not large compared to the resistance of the rolls 6, 7, 8 and 9, then, for example, the current supplied by the left shoulder will pass, mainly, the circuit JIJ2Jl ,, JIJhL. The secondary winding 3 of the transformer 10 generates higher voltage currents entering the amplifier 5. With equal shoulder resistances, the induction work in the windings b, 7 and 8, 9 will be identical, therefore, the magnetic flux from the core 7 will split equally into the cores 2 and 3. But if one of the shoulders, for example the right arm, becomes less resistive, then the magnetic flux will branch off, respectively, to a greater degree to the core 8; therefore e. The power of the variable currents will become greater in the windings 8, 9 than in the windings b, 7, but zooming in (i.e., self-sounding) will not occur, because each of the windings that generates a smaller e. D. force connected in parallel with the winding, generating a large e. d. force Due to the fact that at the terminals of the windings b and 5 and 7 and 9 there will be identical potential differences - the winding 11 of the receiving transformer, as connected to their terminals, of the same sign, will be idle) and this is required. Obviously, a critical imbalance will occur for self-regulatory broadcasting. but it will be many times more than normal in an ordinary system. FIG. Figure 2 shows the execution of the same transmission transformer circuit 1, 2, 3, but each of the identical secondary windings b, 7, 8 and ji 9 continues in the reception winding 60, 70, 80, 90 which belongs to the same section, which is wound as shown , differential: 60 and 70 on receiving transformer 14, and 80 and 90 on transformer 75. As a result, the amplified currents passing through the windings 60 and 70. and SO and 90, do not induce currents in series-connected secondary windings 76 and 77, powering the amplifier 5. The transformer circuit is achieved with the above scheme (together About conductive) interaction of the shoulders. Currents coming, for example, shoulder

LH, windings 76 and 77 are induced by sections 60 and 80, then passage through windings 6 VI 8, and currents of reverse directions are induced in circuits 7, 70 and 9, 90; these currents are summed up in transformers 14 and 15 in the effect on windings 76 and 77, as a result of which the reception power will be weakened solely by the ohmic resistance of windings 6 and S, but not by leaks, as in the previous system.

FIG. 3 shows the execution of the same scheme of the transmitting transformer 7 2, 3, with the difference that the windings b and 7 and 8 and 9 are connected in series with parallel connection of the left and right groups of sections into series-connected circuits of the left and right translation arm.

As can be seen, the entire transmitting circuit is included in the wires of different shoulders, while the wires are connected with an O jumper. as two identical primary ones - 77 and 72 are located on the extreme cores 20 and 30. Windings 11 and 12 are connected by ends into jumper O, and beginnings in the middle of windings b, 7 and 8, 9; therefore, with equal resistance of the left and right shoulders, the receiving transformer will be inactive. In case of unequal resistances of the shoulders in the windings 77 and 72, the currents of the same direction are in the vehicle, but their strength will be significantly weakened due to the mutual balancing effect of sections 6 and 7 and 7 and §, located on the extreme cores of the differential transformer 2 and 3. An increase in the balancing effect of the circuit in this case can be achieved by a special closed loop formed by windings 27 and 22, imposed over sections b and 7 and § and 9. The maximum effect of such a loop occurs if you fit its own nny oscillation period at an average frequency of telephone currents; this is achieved by introducing a suitable capacitor 23 into the indicated circuit of the capacitor 23. All current flowing into the circuit, for example, a shoulder, will branch out with windings 7 and 12, but will not flow into the shoulder, because it induces windings b and 9 reverse currents in the windings

7 and 5.

FIG. 4 shows a differential receiving transformer 70, 20. 30 identical with the above-described dispatch. In this scheme, the telephone currents generated by the amplifier 5 are directed to the shoulders LL and L, L, branched by identical windings 11 and 12 of cores 20 and 30. Overhead windings 11 and 12 are sections 21 and 22 of the counterbalance circuit, in which the capacitor 23 and the primary winding 24 of the second receiving transformer 700. The winding 24 excites the secondary winding 13 of the power amplifier 5. When the shoulder resistances are equal, the currents in sections 77 and 72 will be in one direction, therefore, equalizing circuit 21, 22, 23, 24 does not generate current; in case of unequal shoulders, the occurrence of equalization by the circuit 21, 22, 23, 24 of the current forces in sections 77 and 72 will occur. The current entering the circuit, for example, the arm j7i, will pass along path i, 77 72, therefore, the circuit 27 22 23, 24 generates reception and transmits it to transformer 700 to amplifier 5. The present circuit can be simplified by excluding the second receiving transformer 700, then the exciting amplifier winding 13 must be superimposed in two sections, like winding 27, 22; in the latter circuit design, the equalizing effect is reduced due to an increase in the receiving power. In view of the above, the application of equalizing windings outside the transmission scheme is less expedient and less effective.

FIG. 5 depicts a complex system of transmission to auto transport.

In this scheme, the main windings b and 9 feed the shoulders and telephone currents excited by the primary parallel windings 4, 4. Equalizing windings 27 and 22 are superimposed over sections b and 4 and 9 and 4, forming a special resonant equalizing circuit with a capacitor 23; on the other hand, in the differential transformer, a second equalizing, but not resonant circuit 4, 4 is autolitically formed, which is sufficiently valid, in view of the significant ohmic resistance of its shunting power source.

As a result of the action of the resonant and non-resonant circuits, a sufficiently dull resonance is obtained to obtain the maximum unbalance of the translation arms at all conversational frequencies. In terms of reception, the latter is more advantageous than the FIG. 1, since the lowering of the self-induction of the shunt winding b and 9 will be half as much.

When performing the above-described systems, the following device is recommended, eliminating the need to excessively reduce the cross section of the iron cores of the structure. It is known that with weak magnetization the coefficient of magnetic susceptibility X of iron and. Has a generally small value, and it increases significantly with increasing magnetic induction. Therefore, in a differential transformer, its middle core / or 70 (FIGS. 4 and 5) is supplied with an additional polarizing winding connected in series with a reactive coil and a rheostat in the circuit of a particular battery. By adjusting the current strength (constant induction), it is possible to set the magnetic susceptibility coefficient of the most advantageous value, but regardless of this, the dependence of the core on the completely random effects of lightning discharges and external strong currents that violate the entire adjustment of ordinary translations is also eliminated.

SUBJECT OF THE PATENT.

The telephone translation, which is characterized by the fact that, in order to achieve automatic adjustment in the case of electrical imbalance of the shoulders of translation, transformers are used with a branched and polarized direct current core, equipped with additional equalizing circuits (L, -8, -L and 5, -7, -L, in Fig. 1; L ,, -80, -8, -L and Is-70, -7, -L, on

FIG. 2; 27, -22-23 and b, -7-8-9 "and FIG. 3; 21, -22, -23, -24 in FIG. 4 and 27, -22, -23 and 4, -4 in FIG. 5) electrically coupled or through a magnetic flux with main circuits.

Tipo-piyugrafi “Kraiuy Pechatnik, Leningrad, International, 75.