SU48780A1 - Apparatus for receiving ac pulses of a peak shape - Google Patents

Description

The main author's certificate LL 43455, issued by A. G. Aleksandrov to them, describes a device for obtaining 1 M11 pulses of alternating current of a pico-shaped form using two transformers, the primary windings of which are connected to one network.

One of the above transformers is outputted with a highly saturated magnetic circuit and a secondary voltage of a peak shape, and the second is a voltage equal to the shallow part of the voltage curve of the first transformer.

The secondary windings of both transformers are connected towards each other so that the resulting voltage at the terminals of the receiver is equal to the difference between the secondary voltages of the specified transformer.

In the present invention, which is a form of the device according to the author's certificate No. 43455, as a transformer

with an unsaturated magnetic circuit, an unused iron transformer was used.

In FIG. 1 and 2 represent possible schematic diagrams of the proposed device; FIG. 3- independent current and voltage curves.

According to the invention, the primary windings 3 and 4 of two transformers with the same windings, of which one is made without iron and the other with such a small number, are connected in series with the alternating current of the desired frequency in series (Fig. 1) or in parallel (Fig. 2) that only a very small part of the alternating current period is iron saturated. To compensate for the unwanted induced fundamental frequency used to produce pulses, the secondary and primary windings of these transformers are turned on so that in the absence of iron, the voltage at the output of the device is zero.

The idea of the invention can be explained in the following. If through the primary

Since the transformer winding with a very small amount of iron flows an alternating sinusoidal current /, then the flow 0 through the iron will change with the current only a very small part of the period (Fig. 3). For most of the period, it remains constant. The current in the air created by the current through the primary overlay of the transformer varies in proportion to the current, and the electromotive force from this flow in the secondary winding will be sinusoidal. The electromotive force created by the flow through the iron must have a pulsed form, since only a small part of the alternating current period changes the flow. If the electromotive force in the secondary winding of the transformer created by the flow through the air is compensated by appropriate inclusion (for example, according to the scheme of FIG. 1 or 2) of the second one as

The first transformer, but without iron, then as a result of the output of such a device, the voltage will be in the form of short pulses (Fig. 3, bottom curve). Duration The pulses are determined by the frequency n of the amplitude of the alternating current, and also by the parameters of a transformer with iron and can be calculated.

To increase the amplitude of the pulse, several devices of this type can be switched on so that the primary windings are connected in parallel and the secondary windings are connected in series.

The subject matter of the invention.

The form of the device according to claim 1 of copyright certificate No. 43455, characterized in that an iron-free transformer is used as a transformer with an unsaturated magnetic circuit.

to the dependent author's testimony of J. Vraitbart and М.. M. Rubchinsky 48780

SPIG.E

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