SU37757A1 - Electric switch - Google Patents

Description

Electrical switches of the transformer type with variable magnetic coupling between the primary and secondary windings and with an open magnetic circuit are already known. The present invention relates to such a switch device and consists in its constructive implementation.

In the schematic drawing of FIG. 1 shows a view of the proposed switch on the side and FIG. 2-cross-section.

The switch is made in the form of a U-shaped core and is equipped with two windings, one of which is energized, and a second electric power receiver, for example, an electric incandescent lamp, is connected to the second circuit. At the poles of the U-shaped core, the part C is located on the axis O and is made asymmetric with respect to the axis of rotation.

Due to the asymmetry of part C, in one of its extreme positions (Fig. 1), it will shunt the magnetic circuit of the core at the location of the secondary winding, and the alternating magnetic shot arising in the primary winding closes through part C (except for an insignificant dispersion flow) , induce electromotive force in the secondary winding will not. Accordingly, the current in the circuit of the energy receiver will be zero. At the other extreme position of part C (when the axis O rotates 180 ° relative to the position shown in Fig. 1), a protrusion GI of smaller radius will be located between the ends of the core poles, as a result of which the magnetic flux of the primary winding closes through the part of the core carrying the secondary winding. In this position, the magnetic core with windings superimposed on it will not differ from a conventional transformer, and an electromotive force will be induced in its secondary winding, and an electric current will flow in the power receiver circuit.

It should be noted that in the off position of the switch, when all the space inside the core is filled with the iron of part C, its full resistance will be sufficiently large, and, consequently, the magnitude of the magnetizing current consumed in the idle position, compared with other systems of the same switches, will be insignificant.: g, -:; The subject matter of the invention.

An electric switch of the transformer type with variable magnetic coupling between the primary and secondary windings and with an open magnetic circuit, characterized in that it is made in a vice U-shaped core and a part of a rotatable part located at the poles of this core that is made asymmetric with respect to the axis of rotation with the aim that, in one of its extreme positions, there is a closure. The magnetic circuit of the transformer is at the ends of the core, and in the other extreme position bypass the magnetic circuit; In that part of the core to which there is a secondary obmogka,