November 26, 2022 by Mirko Pavleski
The simplest way so far, to make PEMF device yourself and try the effects of this type of therapy.
Pulsed ElectroMagnetic Field therapy, also known as PEMF, is a drug-free, non-invasive, pain-relief alternative treatment, which also promotes accelerated healing for ailments and injuries. PEMF therapy improves sleep, mental focus, and the body's overall performance by helping the energy output and regeneration of the body's cells. In several of my previous videos, I described ways to make such a device yourself. Due to the great interest and many questions that were asked to me in the previous period, I decided to make this video in which I will try to explain the working principle and its components in a very simple way, so that those readers who only have basic technical knowledge could understand what it is about. I will also describe to you the simplest way so far, to make such a device yourself and try the effects of this type of therapy.
I want to emphasize that I am not a medical person and I will not discuss the effects, although I personally have positive experiences. However, I can confirm (which is also scientifically proven) that this type of low-frequency magnetic flux therapy does not have any negative health effects, except for persons where it is contraindicated (Pregnancy, Pacemakers, bleeding, Active tuberculosis, Malignancies). In fact, MRI imaging uses magnetic fields that are thousands of times stronger than those at PEMF and we all know that this imaging is completely harmless
Each PEMF device basically consists of three parts:
- Square wave generator
- Amplifier of this signal,
- and a coil that generates the magnetic flux
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Many devices can be used as a source of rectangular pulses:
Several versions of this small signal generator can be purchased for less than $10. This is a great little device and is suitable if we have some experience building electronic devices, so we can make an independent PEMF device. In addition to selecting the frequency, we can also control the duty cycle, which should normally be around 10-50%.
Many devices can be used as a source of rectangular pulses:
Several versions of this small signal generator can be purchased for less than $10. This is a great little device and is suitable if we have some experience building electronic devices, so we can make an independent PEMF device. In addition to selecting the frequency, we can also control the duty cycle, which should normally be around 10-50%.
The next part of the PEMF generator is the signal amplifier, for which we have three options:
First, we can buy an audio amplifier with a power of 30 watts or more and use it only for this device, which is a relatively expensive option. The next option is, if we have a home audio amplifier, we can also use it for this purpose, avoiding additional expenses. The third option comes into consideration if we have some experience in making electronic devices, and in that case we would make one of the mosfet amplifiers that I have presented to you in my previous videos.
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These are ready-made coils that I had from previous projects, and they have an ohmic resistance of about 15 Ohms, so the field they generate is weaker and amounts to about 5 Gauss, which is still quite enough for magnetic therapy. However, if you want to achieve a stronger magnetic field, the ohmic resistance of the coil should be about 5 ohms, at least 3.6, and with a 50 watt amplifier, a magnetic field with a strength of 20 Gauss is obtained. To achieve lower resistance, coils should be wound with thicker wire.
In the following, I will show you how to make the simplest PEMF device at home, using materials that can be found very easily.
The Signal Generator function is taken over by any smartphone, which I hope you all have at hand. It is only necessary to install the previously mentioned free application "Signal Generator".
To amplify the rectangular signal generated by the smartphone, we will use an audio amplifier that we usually have for listening to music.
If we don't want to use the amplifier for this purpose, we can buy an inexpensive Class D amplifier with Bluetooth connectivity that costs less than $40 and uses Laptop Power Supply(19V DC).
