Electrosmog of PEMF devices

Electrosmog is a popular term used to indicate if an electric device causes disturbances of [electro]-magnetic radiation either transmitted through the air, like a cell phone, or fed back into the mains power grid.


Electrical signals radiated into the air may cause humming and noise in other devices, like on a radio. Electrical disturbance signals going back into the electric grid arrive at other mains outlets and will create similar noise problems as radiated electrosmog.


Similar to other electrical devices, PEMF treatment devices may also radiate and cause electrical disturbances in the power grid, if the devices are not carefully designed. It is important to understand exactly the source of these unwanted disturbance signals to be able to suppress them at source.


Pulsed frequencies contain besides the specific desired generated pulsing frequencies also so called 'harmonic' frequencies.


Harmonics of a wave is another frequency of the wave but multiplied with a factor of the original generated frequency. E.g. if the generated pulsed frequency is 1 Hz, the first harmonic is 2 Hz, the second harmonic is 3 Hz, the third harmonic is 4 Hz etc etc. These unwanted harmonic waves do decrease in strength for each next step but they are still undesirable waves and it is important to suppress them at source.

In addition, PEMF's outside the preset therapy frequencies are unwanted and is another reason why suppression of these waves in PEMF devices is required.

Pulsed wave signals which are not sinusoidal are very difficult to suppress being another reason why sine wave signals are a must for use in PEMF devices.

Because the wave signals must be switched on and off very fast it is important to perform this action exactly the moment these sine waves cross their zero point, to avoid generation of electrosmog. 

When you look at a pendulum clock you should be able to see that exactly the moment the pendulum reaches its highest point at either side, it halts for a very short moment, just before it returns to the opposite side, where it again halts for a very short moment at its highest point. 

The path of the pendulum is actually a perfect sine wave! 


All PEMF devices making use of any other wave form other than a pure sine cause electrosmog. Even if pure sine waves are the basic carrier of the PEMF signal, it is crucial that each individual pulse switches exactly at the moment when the sine wave crosses its zero point similar to the very short moment the pendulum of the clock is at a complete standstill.

Only perfect synchronization between hardware electronics and computer software as in the Parmeds devices perfection is indeed obtained of this difficult task.

Other forms of power line disturbances do exist and here is an example of noise caused by Electro Magnetic Interference or Radio Frequency Interference. The picture shows pulses of electrical noise on top of a normal power line sine waveform. 

Line noise

These undesired electrical noise signals travel via the power grid and will cause disturbances in computers and other electric devices which are connected to the same power grid. 

The Parmeds PEMF devices contain a special filtering device preventing electrical disturbance signals from entering the power grid and at the same time block existing electrosmog signals arriving from the power grid.