SU99906A1 - A device for adding the power of two generators to a common load resistance - Google Patents

Description

The object of the present invention is a device for combining the power of two independent generators.

The devices of the same purpose known in the art have significant drawbacks. In devices assembled according to a bridge circuit, the load resistance of the generators is unequal and has a large reactive component, which is why their use is impractical. These devices, which are composed of line segments, can practically only be used at fixed frequencies in the range of y. to. in.

The proposed device, in contrast to the known ones, provides an equal load of generators with a lower reactive component and can be used to add power to both high frequency generators and sound frequency generators.

In the described device for combining the power of two generators according to the invention, either an oscillating circuit, the reactance value

which is small compared with a shunt; 1 m circuit with ballast resistance, or an iron-core transformer, which has a small loss and dissipation inductance and a greater mutual inductance between the windings.

The scheme and principle of operation of the described device are explained in FIG. 1-5.

In the device, generators / and 2 operate on a total load of 3 (R), in series with which ballast resistance 4 (Rfj) is included.

In the case of the operation of one generator / if the equality of the soprotiBlein} and 4 is set, the voltage of the generator / is distributed equally among these resistances. Transformer 5 is turned on in such a way that the voltage on its secondary winding is antiphase voltage and on the resistance of the payload 3 and with a transformation ratio equal to one is equal to the voltage drop U, -; on the ballast resistance, tension 4. As a result, the voltage between the points a and v is equal to the difference between the voltage and and U "and, -. With equal voltage

“And the potential difference at the points a mv, i.e. at the terminals of the generator 2, is zero at any value of the current of the generator /. Thus, in the device according to the proposed schemes, both generators work independently on the total load.

The current of the generator 2, when turned on, creates on the primary winding of the transformer 5 and, therefore, on the ballast resistance 4, a voltage opposite in phase to the voltage generated by the current generator attorney /. Under the condition of equal amplitudes and voltages of i-generators / n 2, the voltage on the ballast resistance 4 created by the generator 2 current will be equal to the voltage created by the generator current /, n fully compensates for it.

In this case, the voltage drop across the ballast resistance and 0 and all of the two generators 1 and 2 are released in the load.

If it is necessary to build up the power of two generators of different power), then transformer 5 should have a transformation ratio equal to p. -1, and the ballast resistance should be equal to the load resistance 3 multiplied by p-1. The device is shown in FIG. 1 may be applied in the audio frequency range. In this case, the main requirement for the device — the absence of the reaction of one generator to another and the active resistance of the generator load — will be fulfilled the more accurately, the smaller the losses and inductance dissipated in transformer 5 and the greater the mutual inductance between its windings.

When adding the power of high-frequency generators, a 6-1-1-1 oscillating circuit 6 can be used to rotate the phase.

In a device with a contras instead of a transformer, the condition for the absence of the response of one generator to another is satisfied if the magnitude of the reactance of the circuit is small compared with the ballast impedance of the circuit.

FIG. 2 shows one of the possible sk, device for adding the high-frequency generator powers in the case of an unbalanced load. With equal power () of the generators: / and .2 in the device but the diagram, f shown in FIG. 2, the capacitors of 7 to 8 should be equal. The ballast sop (discharge 4) is greater than four times; 1 or the payload 3 is four times as the transformation ratio of circuit 6 is 0.5 and the ballast resistance 4, converted into points a-b, will be O, 25 „where J is the value resistance to useful load 5; / d - value of ballast resistance 4.

When using a device to add power to two short-wave transmitters, it is advisable, for convenience, to match the transformer-transformer feeder resistance

vat

ballast resistance should be taken R - 1Rf. Such a transformation of resistance can be obtained in the device according to the scheme shown in FIG. 3. The device according to this scheme allows, besides the TOGO, some detuning of the circuit 9 to compensate for the reactive component of the feeder, if the coefficient of the traveling wave is not equal to 1 in it.

The device according to the scheme shown in FIG. 4 is advisable to use when adding the power of the generators, having a symmetrical output.

In y. to. in. In the range described in the device, in order to rotate the phase, instead of contours, segments of lines of corresponding length can be applied.

Pa figs. 5 shows a circuit for the case of a series connection of generators.

The described device can be used in the technique of high-power wired broadcasting and for adding power to long-wave and short-wave radio transmitters.

Subject invention

Claims (2)

1- A device for adding the powers of two generators on a common load resistance, which contains, in addition to the load resistance, one or several ballasts, and is designed in such a way that the currents of the generators are in phase in the resistance of the payload and out of phase in the ballast resistance, in order to reduce the electrical connection between the generators and the reactive component, their load, in order to suspend the rotation of the phase, an oscillating circuit was used. reactive resistances which is small compared with shunt coitur ballast resistance. 2. Modification of the device according to claim I, characterized in that a phase transformer with a 5 (iron core, having small losses and dissipation inductance and a large mutual inductance between the windings) is used to rotate the phase. FIG. 2 - LPPG G