RU147038U1 - RESONANT TRANSFORMER - Google Patents

Abstract

Resonant transformer, including primary and secondary windings, the secondary winding of which is an oscillating circuit, characterized in that around the primary and secondary windings there is a closed conductive surface galvanically connected to the end of the secondary winding closest to the primary winding.

Description

Technical field

The claimed technical solution relates to a conversion technique.

State of the art

A transformer comprising the primary and secondary windings is known from the state of the art, the end of the secondary winding closest to the primary winding being galvanically connected to earth, and the secondary winding circuit being an oscillating circuit (Tesla N. Electric transformer: US Pat. US 593138 USA. 1897). This technical solution, hereinafter referred to as the resonant transformer, provides the ability to achieve a high voltage transformation ratio. However, it has disadvantages: the negative impact of its electromagnetic radiation on the surrounding devices and living organisms, as well as the need for grounding of the secondary winding.

Utility Model Disclosure

The task to which the claimed technical solution is directed is:

- in the protection of living organisms and technical devices from electromagnetic radiation produced by a resonant transformer;

- in increasing the voltage on the secondary winding, hereinafter referred to as the output voltage, resonant transformer with a constant value of the voltage on the primary winding, hereinafter referred to as the supply voltage;

- eliminating the need for grounding of the secondary winding of the resonant transformer.

This problem is solved due to the fact that in the resonant transformer that includes the primary and secondary windings, the secondary winding of which is an oscillating circuit, around the primary and secondary windings there is a closed conductive surface galvanically connected to the end of the secondary winding closest to the primary winding.

The technical result provided by the given set of features is a significant reduction in electromagnetic radiation from the secondary winding of the resonant transformer outside the Faraday cage (the result is confirmed by measurements carried out using the three-component meter of electromagnetic field parameters Narda NBM-520 and shown in Fig. 1) due to radiation compensation field formed by the produced movement of charges of the conductive surface, as well as an increase in the output voltage of the reson a transformer at a constant supply voltage (the result is confirmed by measurements carried out using a Phenix Technologies KVM100 kilovoltmeter and shown in Fig. 2), by increasing the capacity of the secondary circuit, which increases the quality factor of the secondary circuit and the amount of energy stored in it, and, as experiments have shown, it ensures the operation of a resonant transformer without grounding the secondary winding.

List of figures

In FIG. 1 is a graph of the dependences of the electric field E and the magnetic field B induction as a function of the distance from the secondary winding with and without Faraday cage. In FIG. 2 shows a graph of the voltage across the secondary winding versus the number of turns of the primary at different capacities of the secondary circuit. In FIG. 3 shows a resonant transformer.

Utility Model Implementation

Around the primary winding 1 and the secondary winding 2 is located, in this case, coaxially with the secondary winding at a distance from the conductive parts of the primary and secondary winding circuits, sufficient to prevent electrical breakdown, closed conductive surface 3, then Faraday cage, galvanically connected to the closest to the primary winding the end of the secondary winding 4 and having, in this case, the shape of a cylinder. A Faraday cage may also take the form of, for example, a prism, sphere, cone, truncated pyramid, truncated sphere, or truncated cone. With the end of the secondary winding other than the end connected to the Faraday cage, a conductive surface 5, for example, spherical or toroidal, can be galvanically connected. The material from which the Faraday cage is made can be a steel wire coated with copper or other metal with a low resistivity. The voltage on the primary winding is supplied in this case by a power supply unit (PSU) 6 with the possibility of generating an alternating current having a frequency equal to or close to the resonant frequency of the secondary winding circuit.

The device operates as follows. When a current flows in the primary winding, having a frequency equal to or close to the resonant frequency of the secondary winding circuit, charges move in the Faraday cage 3 under the influence of electromagnetic radiation of the secondary winding 2, creating a field that compensates for this radiation. When the Faraday 3 cell is galvanically connected to the end of the secondary winding 2 closest to the primary winding, an increased capacity of the secondary winding circuit is created: this increases the quality factor of the oscillatory circuit of the secondary winding and the amount of energy stored in it.

The advantages of this technical solution are a significant reduction in electromagnetic radiation, an increase in the transformation coefficient of the resonant transformer, and ensuring its operation without grounding the secondary winding. This can be applied in educational institutions to ensure electromagnetic safety when demonstrating experiments in physics using a resonant transformer; in those devices where a resonant transformer is used as one of the parts - to reduce the effect of electromagnetic radiation on other parts of these devices sensitive to electromagnetic radiation; as well as in cases where it is not possible or inconvenient to provide grounding of the secondary winding of the resonant transformer.

Claims (1)

Resonant transformer, including primary and secondary windings, the secondary winding of which is an oscillating circuit, characterized in that around the primary and secondary windings there is a closed conductive surface galvanically connected to the end of the secondary winding closest to the primary winding.

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