PEMF is pulsed electromagnetic field therapy

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Pulse Forms

As elaborated on the previous Frequency page, the actual pulsing rate (= frequency) is very important for pulsing electromagnetic field therapy. 

In addition to the frequency, the actual pulse width for each individual pulse is important in order to obtain sufficient energy for transfer into the body. 

In the picture is shown the basic different waveforms as used in PEMF devices.

Pulse Forms used in PEMF devicesPulse Forms

The red waveform is a sine wave

And the green waveform is a square wave  

While the blue waveform is a triangle wave 

And the purple waveform at the is a sawtooth wave

All PEMF devices use one or more of these waveforms or a combination of them to transfer the pulsed electromagnetic energy into the body.   

The mathematician Joseph Fourier discovered that Sinusoidal waves are the actual basic "building blocks" that make up nearly all other periodic waveforms, including square wavestriangle waves and sawtooth waves!

The irregular sound waves of human speech are made up of sine waves. The human ear recognizes single sine waves because these sine wave sounds are pure. Other examples of clean sine wave sounds are the vibrations of a tuning fork or ticking against a crystal tumbler. 

The human ear will hear "noisy" sounds if sound waves contain more than one sine wave, also called "harmonics". We will elaborate on this subject later, on the Electrosmog page.

The easiest way of using any one of the waves in the picture above is to apply one of them directly as pulsed frequency for the pulsing electromagnetic field device, which is usually done in battery powered and other low intensity devices. E.g. by using any one of these waves there is no need to apply other technologies other than simply changing the amount of waves supplied during each second and this directly relates to the pulsed frequency!

This method does not offer effective application of PEMF.

Take a closer look at the differences between the basic wave forms and the way the pulsing repetition rate is applied to generate the pulsed frequencies, as basis for the frequency specifications. 

For example: if we want to open the tap and fill our kettle with water, the time we need to fill the kettle depends directly upon the water pressure and the time we keep the tap open. If we open the tap only a little bit it takes much longer to fill the kettle, right? We are actually looking at two completely different things (time and pressure), together responsible for the final result. 

Effective PEMF devices are developed to do exactly the same: during the time the pulse is applied (opening the tap) the magnetic energy is emitted. Depending on the basic waveform used (the water pressure) this results directly in the quantity of the magnetic energy applied and is one of absolute important issues for the efficacy of the device. 

In conclusion: The amount of times we open the water tap each second is similar to the pulsed frequency, and the water pressure is similar to the amount of energy generated.

But hold on, we are not yet there. The efficacy of the device does not only depend on the amount of energy transferred into the body but also on the waveform used during the individual pulse applications. The waveform is important for the ability to absorb the energy inside the body and the efficacy of the device is highly dependent on the type of waveforms that are used in combination with the pulsed frequencies. 

There are manufacturers who claim that their unique waveforms are more effective but contradict their own statements at the same time. 

Bemer PEMF signalE.g. the Bemer signal is a simple series of sine wave signals, which increase in frequency during the pulse time and they are applied inside a triangle pulse form! This effectively causes suppression of the effective lower frequencies, while at the same time letting only the higher frequencies through, which are known to be the hardly effective! To make it worse: they have a fixed pulsed frequency of 30 Hz and the sine wave frequencies they use go up to ~ 1000 Hz! 

For the Parmeds systems we of course want to use the best possible "building blocks" during each individual pulse (remember this is not the pulsing frequency!) and this is of course the sinusoidal wave form.

Sinus and rectified sinus used in PEMFSinus and rectified sinus

 

At the left side of this picture we see a basic sine wave signal form. Because we want to utilize the signal to the full extent, we "rectify" the negative part of the signal and obtain a rectified sine wave signal shown at the right side of the picture.

 

Now use "packages" of the rectified sine wave signals are used during each individual pulse. The specific quantities of these rectified sine wave signals are "packed" inside each pulse and use this advanced technology to change the energy transferred during each pulse as explained on the Intensity page. This technology requires extensive knowledge in electronics hardware and software, which is of course extensively available at the company.

We will relate to how we were able to address the specific problems related to this technology on the Electrosmog page.