The Earth has a natural pulse known as the Schumann Resonance. This phenomena was predicted in 1952 by Winfried Otto Schumann and is produced by the continual lightning strikes on the planet. The electromagnetic waves from the lightning resonance between the earth and the ionosphere at a rate of 7.83 cycles per second. It takes highly scientific instruments to detect this signal as it is a faint one but something that plants and animals of the planet have lived with for aeons.
When cities became larger and electricity was more heavily used, this subtle earth signal got lost in the background and now you have to be in the country to be amongst it again.
A lot of people have concern that this detachment from the Schumann resonance is cause for electromagnetic stress and issues like insomnia. In the brain the pineal gland controls the rate of melatonin and at night time it signals the body to sleep. Humans are diurnal beings and rely on the presence of the sun and earth resonances for regulation. In one scientific experiment students were put into a magnetic canceling chamber for a few days to see if their diurnal clocks would be affected. The students started to follow a 25 hour day when detached from the magnetic fields of the earth. Scientists also understand that brainwave rates are influenced from electromagnetic equipment, this could include RF radiation from a television/radio antenna, cellphones, etc.
In this project I built a oscillator that creates a sine shaped wave at 7.83 cycles per second. The signal is sent to a coil that is bifilar wound and arranged so that the electromagnetic fields are self canceling. This canceling of the potential for an electromagnet is known as scalar, a standing wave of energy which is highly speculated and remains a mystery.
The power output of the generator is low (< 90 milliamps) but enough to recreate the earth signal that the human body is theorized to detect. This was a interesting and fun experiment to do.
Schumann Frequency Generator with Scalar Coil
An excellent book to
learn about electronics
by Stan Gibilisco
Bifilar coil with self canceling winding arrangement
Wein Bridge Oscillator with coil schematic
Circuitry of Schumann generator
Diagram of bifilar wound coil
Regular and scalar arrangements
I should note that the formula listed next to the schematic is: f=1/2(pie)RC
This is done for frequencies in units of 1 Kilohertz.
So, for 7.83 Hz, you need to calculate .00783 for F if you are to use this equation.
For building the circuit I used capacitors that were .43uF and with a tolerance of 1%.
The resistors were 47.5K and again a tolerance of 1%.
I learned that the tolerances should be kept low in order to ensure an outcome that is very close to the desired 7.83 Hertz. These low tolerance components can be more tricky to find, thusly you may be willing to use components with more tolerance. Also, the lamp in the circuit acts as a resistance and temperature can slightly affect the Hertz rate.
To test that the circuit is working properly I used a LED that was connected to the output signal and ground, since and LED is a diode it flashes on only one side of the sine wave. I used photo tachometer to confirm the flash rate was extremely close to 7.83 Hertz.
To experiment with the device further I have used a dc power source to raise the AC generated signal to turn it into a fluctuating dc signal while still remaining a sine waveform (basically it's raising the AC signal so that none of it ever falls into the negative region below 0 volt).
I should add that the power supply to run this circuit needs to be bi-polar, I learned this the hard way. There is a simple way to use two 9 volt batteries as a bipolar power source which would be good for starting tests.