Research website of Vyacheslav Gorchilin
2026-07-21
All articles/Electronic circuits
Large Scalar Field Healing Coil: A Practical Guide. In a previous paper, we examined in detail a compact healing coil based on the use of a second magnetic field. Despite its small size, the device demonstrated interesting practical results and became a starting point for further research. More details about its operating principle and initial experiments can be found in . . However, further experiments showed that the potential of this technology is far from exhausted. The idea arose to create a coil with a significantly larger diameter, capable of generating a wider area of ​​action. As a result, a design with a diameter of approximately 0 cm was developed, allowing simultaneous treatment of one or more organs. At the same time, the output power was increased by approximately 0-6 times, to approximately 0 W. . When developing the new design, the primary focus was not on increasing power per se, but on creating the cleanest possible operating region. To this end, special circuit and design solutions were adopted aimed at significantly compensating for the classical electric and magnetic field components. According to the proposed model, this design allows for an increase in the relative contribution of the hypothetical scalar component, which is the focus of this work. . The device consists of two main components: an electronic generator and a large flat coil. Below, we will examine their structure, operating principles, and tuning features, and explain why this particular design was chosen after numerous experiments. . Device Circuitry. The generator is based on a circuit discussed in detail . Interestingly, from a classical circuit design perspective, this transistor connection should not ensure stable oscillation generation. However, numerous experiments have shown the opposite: the circuit starts reliably, is highly stable, and maintains operation over a wide range of supply voltages approximately 0 to 0 V. . Compared to the basic design, inductor L0 was added to the generator. Its purpose is twofold: to improve the output signal shape, bringing it closer to a sinusoidal form, and to increase the overall efficiency of the device. This reduces parasitic harmonics, and the operation of the entire system becomes more stable . . Otherwise, the circuit is virtually identical to the original design. Resistors R0 and R0 provide the necessary base bias for transistor VT0. Generation is initiated by positive feedback through capacitor C0. Elements L0, L0, and C0 form the main oscillatory circuit, which determines the oscillator's operating mode. The second circuit, consisting of L0 and C0, is electrically connected to the first and serves to increase oscillation stability and stabilize the operating mode. . A unique feature of the circuit is its ability to operate in two different modes. In the first mode, the secondary winding of coil L0 remains open, and the device functions as a conventional high-frequency oscillator. In the second mode, the secondary winding is closed, which fundamentally changes the coil's operating characteristics. This mode is used in this design. According to the proposed model, this connection significantly weakens the classical electric and eddy magnetic components of the field, while simultaneously enhancing the manifestation of the scalar component under study. .
LEDs D0 and D0 perform two functions. First, they electrically close the secondary winding L0, ensuring the required operating mode of the coil. Secondly, they provide a convenient indicator of the presence of an oscillatory process. When the generator is operating properly, the LEDs glow steadily, indicating the required coil excitation mode has been established. . The inductance of the primary winding of the coil constructed by the author was approximately 0 μH. However, experience has shown that the device remains functional even at values ​​in the range of approximately 25–45 μH. In this case, the generator's operating frequency changes primarily, while its operating principle remains unchanged. A characteristic feature of the design is that after the secondary winding is closed, its effect on the magnetic coupling leads to a decrease inThe measured inductance of the primary winding decreases by approximately two times. This is the operating mode of the coil in the finished device. . When the supply voltage is reduced from 0 V to 0 V, the circuit's output power decreases by approximately four times. While it is advisable to mount transistor VT0 on a small heatsink at 0 V, it does not heat up at all at 0 V. . Scalar Coil Design. The coil design is based on the same technology used in the compact version of the device and is described in detail . However, the increase in size required a number of important changes that directly impacted the stability of the generation and the characteristics of the generated field. This section is devoted to these features. . Manufacturing begins with the primary winding. Enameled copper wire with a diameter of 0.6–0.7 mm is wound onto a smooth tube approximately 0 mm in diameter. The resulting winding should be approximately 60–65 cm long. After winding is complete, the coil is carefully removed from the mandrel and uniformly stretched to a length of approximately 0 m . It is important to stretch without localized areas of compaction to ensure that the pitch of the turns remains as uniform as possible along the entire length of the coil. Heat-shrink tubing is then placed onto the resulting coil, which, after heating, securely holds the turns in place. The result is the finished primary winding. . The primary winding's length of approximately 0 meters was chosen deliberately. It corresponds to the length of the spiral guide made inside the coil body. This ensures that the stretched winding is precisely positioned along the entire length of the guide with a uniform turn pitch, avoiding areas of compression or overstretching. This solution significantly simplifies assembly, ensures secure fixation of the coil, and maintains uniform winding geometry along its entire perimeter. . The secondary winding is wound over the primary winding in a similar manner. Experience has shown that its number of turns should be approximately 2–2.5 times greater than the number of turns of the primary winding. Due to the transparency of the heat-shrink tubing, the turns of the primary winding are clearly visible, making it convenient to lay two or three turns of the secondary winding over each turn of the primary winding. After winding is complete, a layer of heat shrink is placed on top, permanently securing the entire structure. The coil is then placed in the housing . .
When connecting the coil, observe the polarity of the terminals. The central terminal of coil L0 is connected to inductor L0, as shown in the circuit diagram . Incorrect connection will disrupt the generation mode and may completely prevent the required operating mode from being achieved. . It is convenient to use heat-shrinkable tubing with a diameter of 15–17 mm to secure both windings. The specific manufacturer is not critical. The main requirement is a shrink ratio of at least 0:1. . After heating, this tubing securely holds the turns, imparts the necessary mechanical strength to the structure, and protects the windings from mutual displacement during operation. . Components. LEDs D0 and D0 deserve special attention. Despite their apparent simplicity, they are one of the most important design elements. Experience has shown that the best results are achieved using compact 0-5W LEDs with a neutral light color. These LEDs have suitable electrical characteristics, perform well in this circuit, and simultaneously serve as a convenient indicator of the generation mode. can be used as an example. . The remaining components of the device are not in short supply and are easily obtained from most electronic component suppliers. The author used the following components: . The generator's design is fairly simple and doesn't impose strict requirements on the printed circuit board. Thanks to its small number of components, the device can be easily assembled on a standard breadboard, allowing you to build it yourself without having to hire a professional manufacturer. . One of two options can be used to power the generator. . Device setup. Setting up the device is straightforward and is completed after assembly is complete. Before turning on the generator for the first time, it is recommended to set the R0 trimpot to its midpoint. Then connect the oscilloscope to the terminals of the primary winding of coil L0 and apply power. . After the generator starts, LEDs D0 and D0 should light. As noted earlier, they perform two functions: they close the secondary winding of coil L0 and simultaneously serve as an indicator of the generator's normal operation. If the LEDs are steadily illuminated, this means the device has entered operating mode and the coil is excited according to the selected scheme. .
Next, by smoothly varying the resistance of trimmer resistor R0, it is necessary to achieve the most symmetrical output signal shape. Before connecting the LEDs, the oscillation shape usually corresponds to that shown in Fig. 0. After connecting them, the generation mode changes, and the oscillogram takes on the shape shown in Fig. 0. This is the operating mode for this design. . During setup, it is also recommended to monitor the power consumption of the device. With a supply voltage of 0 V, it typically does not exceed 0.0–1.2 W, and with a supply voltage of 0 V, it is approximately 0 W. Significantly exceeding these values ​​may indicate an installation error, improper coil connection, or the need for additional generator adjustment. . Please note that achieving a perfectly symmetrical waveform on the first try is not always possible. A slight signal asymmetry is acceptable and has virtually no effect on the device's operation. Once properly configured, the generator starts almost instantly each time the power is turned on and does not require readjustment. . Device Housing. A special coil housing is not required for the device to operate. If necessary, it can be assembled into a flat coil and secured.The coil can be secured with standard plastic ties or other suitable fasteners. This option is fully functional and allows for quick testing of the device after assembly. . However, for continuous use, a specially designed enclosure is recommended. It contains a spiral guide that ensures proper placement of the coil along its entire length. This maintains a uniform pitch of the turns, prevents mutual displacement, and significantly increases the mechanical strength of the entire structure. Furthermore, the enclosure protects the coil from accidental damage and gives the device a finished appearance. .
Production version: 3D body (open)
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For self-fabricating the enclosure, a complete set of 3D printing files has been prepared. It includes the coil enclosure and cover, as well as a separate enclosure and cover for the electronic generator. After printing, all parts are completely ready for assembly and require no additional machining. . All housing components are designed specifically for this design and are precisely positioned for the coil, generator board, and connecting wires. This allows for the design to be replicated without having to design the mechanical components yourself. . .
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