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Old 4th January 2011, 12:27 PM   #151
protos is offline protos  Greece
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OK it works better with a simple mosfet follower.
However the current is too high.
The coil has maybe 1 ohm resistance and I am using a square wave of a couple of volts.This means that the output is quite few watts.
So I see the transistor needs a good heatsink.
Unless ofcourse I pad down the output to a few hundred millivolts.
What is the voltage on the other circuits mentioned previously eg kbk etc?
Can Allen please respond on this?
Are we talking millivolts here for the output or is there something I am missing such as cancellation?
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Old 4th January 2011, 01:24 PM   #152
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Default Limiting power emission

Hi protos,

In my realization, I limit current with 560 ohm resistor in series with 1mH coil.
I kept output tension (560R + coil) at 2V RMS. The output signal is a sinewave.
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Old 4th January 2011, 01:56 PM   #153
protos is offline protos  Greece
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So in fact the voltage over the coil is minimal, right?
If we assume the impedance in the coili s no more than 1 ohm or thereabouts then it forms a divider with 560 ohms bringing the voltage to around 4mV over the coil, correct?
And yet it works for you it seems.
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Old 4th January 2011, 02:10 PM   #154
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Quote:
Originally Posted by protos View Post
So in fact the voltage over the coil is minimal, right?
If we assume the impedance in the coili s no more than 1 ohm or thereabouts then it forms a divider with 560 ohms bringing the voltage to around 4mV over the coil, correct?
And yet it works for you it seems.
Right
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Old 6th January 2011, 06:18 PM   #155
protos is offline protos  Greece
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So I put a 33r in series and the voltage over the coil is 100mv.
I tested it on my main system and it works as planned.
Just one thing about this is that you cannot A/B immediately.You have to wait a minute or two before you play a track again in order to "absorb" or "detune" in respect of the waves otherwise quick a/b will confuse you.

However once you settle in the effect is almost amazing. Everything is wetter , more natural sounding , bigger and more coherent.
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Old 7th February 2011, 06:34 PM   #156
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Old 6th March 2011, 08:05 PM   #157
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Good evening everyone, I was literally devouring this topic as I decided to build my own resonator and have extensively searched the internet already.
I guess I would go with the AR schematics but could someone indicate parts and values on it? Also, I would draw a spiral coil on PCB instead of squares with the same "circles" count as on AR.
Alternatively, could someone suggest a good and stable oscillator project which has already been tried and tested in this particular application from your own experience?
Finally,what is the desired emitting power level?
Thank you.

Last edited by Willi Studer; 6th March 2011 at 08:11 PM. Reason: Additions
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Old 7th March 2011, 07:28 AM   #158
protos is offline protos  Greece
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ne 555 basic application schematic tuned for 7.83hz , 12v, mosfet follower into anti-parallel secondaries transformer with about 10,000uf for the dc.
The higher voltage translates into a bigger effect.
If you limit the output with a resistor then it is not the same.Maybe lower voltage is ok for health and sleep in long term mode but for music I find the highest is better.
I have made three and I am beta testing with members of the ACA audiophile club here.
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Old 11th March 2011, 12:59 PM   #159
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Default Interesting video...

HI People!
I'm an audiophile and I'm very attracted from your interesting posts about the Schumann Resonator.Here there is a video that confirms at 7.83 Hz happens something special:Marcos Dancing Magnets
The toroidal coil is pulsed with a progressive square wave,mantaining the same ampltude of the signal at each frequency.Note when the signal reach the center frequency of 7.8 hz, the oscillation of the donut magnets are at maximum and diminuish when you go out of phase. Really cool!

Some pages ago, was posted a schematic of the Audio Revive RR-77.If someone is so gentle to PM the missing values of the parts,it will be greatly appreciated.Thank you!
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Old 8th July 2011, 07:33 AM   #160
protos is offline protos  Greece
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See the review from our audio club here:
Audiophile Club of Athens - A.C.A. - Tony Pothitos
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