DIY Schumann resonator? - Page 12 - diyAudio
Go Back   Home > Forums > General Interest > Everything Else

Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 26th March 2010, 06:47 PM   #111
diyAudio Member
 
Join Date: Aug 2003
Location: Calgary on the Bow
one of my friends has two small Chinese built units (I don't know the name, no markings) into which I installed a larger coil made from 30 gage wire oblong 4 X 6 inches. When we installed the new coil into one of the units and placed the unit back into his system along with the stock unit. We noticed an improvement overall with the addition of the unit with the larger coil as dramatic as what we had heard when he had first tried one unit for the first time. The interesting thing was that when we switched off the unit with the larger coil (the stock coil unit was still running) it was as if we had only one unit on and that it had been turned off, even though there was still a stock unit running. Switching off the stock unit while the one with the larger coil was on had almost no noticeable affect. So the larger coil made a big difference in output so much so it totally overshadowed the effect of the smaller coil in the stock unit.
Larger coil (antenna) results in larger radiation area of the transmitted signal. Higher voltage driving the coil and you get a louder signal and more range of the transmitted signal. I don't know where the line is for enough and too much. I have since replaced the coil in my friends second unit and now both have 4 X 6 inch coils installed and he seems quite happy.
__________________
moray james
  Reply With Quote
Old 27th March 2010, 03:02 PM   #112
diyAudio Member
 
Eric Juaneda's Avatar
 
Join Date: Dec 2006
Location: Avignon, France
Hello Moray,
Quote:
Originally Posted by moray james View Post
one of my friends has two small Chinese built units (I don't know the name, no markings) into which I installed a larger coil...
Did you mean that your friend run two independent Schumann generators in the same room?
__________________
Eric Juaneda - tech.Juaneda.com - Junilabs.com
  Reply With Quote
Old 27th March 2010, 04:23 PM   #113
diyAudio Member
 
Join Date: Aug 2003
Location: Calgary on the Bow
Quote:
Originally Posted by Eric Juaneda View Post
Hello Moray,
Did you mean that your friend run two independent Schumann generators in the same room?
Yes that is exactly what he was doing. he told me that he felt that the effect was cumulative.
__________________
moray james
  Reply With Quote
Old 30th March 2010, 06:34 AM   #114
diyAudio Member
 
Join Date: Aug 2003
Location: Calgary on the Bow
We:ll I just finished the first of two cylindrical coils. This one is a bifilar coil that has a core of small cylindrical neo magnet slugs about 3/8 long and a little under a 1/4 inch in dia. the length is about 3 inches long. The coil is about 3/4 of an inch in diametre overall wound with 30 gage magnet wire. This is installed in a friends Chinese generator box and seems to be working fine but I want to have a look at the wave form on the scope some time this weekend.
I will build another coil like this one but not bifilar. That will give me two similar coils one bifilar to make Scalar waves the other magnetic then we can compare the different coils in his two generators and get an idea of how each type performs.
__________________
moray james

Last edited by moray james; 30th March 2010 at 06:36 AM.
  Reply With Quote
Old 2nd April 2010, 08:09 AM   #115
diyAudio Member
 
Join Date: Aug 2003
Location: Calgary on the Bow
Ok this unit has been running for a while and is very smooth feeling so smooth I was kind of worried that the coil might be loading down the oscillator so much that it might not be working at all or at a much reduced level. That was my conscious worry but It felt like it was fine. Well I got the unit to my friends place and we hooked it up to the scope. The unit runs perfectly and the interesting part is that the sine wave out put is perfectly symmetrical. Now with the stock coil and the 4 inch round coil and the 4 x 6 inch oblong coil (all bifilar) the wave form was fine for the first 90 degrees then badly deformed for the next 90 degrees then back to fine then deformed. So I was surprised that with the largest coil by far the wave form is totally smooth all 360 degrees. This is a much more relaxed feeling unit now there is no edge and I can forget that it is even on. I will build up a similar sized magnetic coil and install that one into this same unit and use a switch so that I can switch between the bifilar coil and the magnetic coil and will report back with what I find at that time. Best regards Moray James.
__________________
moray james

Last edited by moray james; 2nd April 2010 at 08:12 AM.
  Reply With Quote
Old 5th April 2010, 02:32 PM   #116
diyAudio Member
 
Join Date: Jun 2004
Location: emilia
Hello Moray,
I follow this post with much interest.
I've done my schumann resonator monhs ago with a dual opamp: the oscillator was the easiest part but the antenna was a mistery for me, because I have no experiences in radiated fields.
In my device I used a simple 10 inches diameter coil made by 200 meters of 30awg enameled copper wire -no bifilar, simply spiral.
What I obtained is a magnetic coil connected with the circuit via a bypass capacitor (200uF) in series and a resistor to keep the output load not too low.
The sine waveform looks symmetrical and good but non perfect.
When I power the unit on I can feel in a few seconds a very little whistle in my head, a strange hiss together with the sensation of freshness of mind, certainly something not so good to keep on during sleeping.
I have to try the bifilar coil even if I don't understand what I radiate with a bifilar spiral (for sure I don't radiate a magnetic field).
Best Regards Roberto
  Reply With Quote
Old 5th April 2010, 04:30 PM   #117
diyAudio Member
 
Join Date: Aug 2003
Location: Calgary on the Bow
Hey Roberto: thanks for the post. Just wondering if you have played with the values of the cap and resistor that couple your coil? I am also curious to know what voltage you are running your output stage at and if you can ascertain how wide a range or transmission you are getting. I am interested in in a design that will cover the area of a whole house rather than just one room sized area.
I am sure that there would be interest in your circuit if you care to post it along with comments. I have found a number of different circuits but I am not an electronic builder so I have no reference to know which might be better suited. Regards Moray James.
__________________
moray james
  Reply With Quote
Old 7th April 2010, 08:27 PM   #118
diyAudio Member
 
Eric Juaneda's Avatar
 
Join Date: Dec 2006
Location: Avignon, France
Quote:
Originally Posted by bettersimple View Post
When I power the unit on I can feel in a few seconds...
I made some test this evening (now exactly). It seems that 10 seconds are necessary to feel the full benefit of the generator (power off to power on).
We need same duration to feel the full effect of switching off the generator (power on to power off).

If you made some test, take your time
__________________
Eric Juaneda - tech.Juaneda.com - Junilabs.com
  Reply With Quote
Old 7th April 2010, 08:40 PM   #119
diyAudio Member
 
Eric Juaneda's Avatar
 
Join Date: Dec 2006
Location: Avignon, France
Hello Moray,
Quote:
Originally Posted by moray james View Post
I am interested in in a design that will cover the area of a whole house rather than just one room sized area.
The position of generator is very important. Putting generator in high position is better (on the top of a shelf for example). Putting generator near equipments is not a good idea. Prefer a distance of two or three meters, the result is more homogeneous.
The ideal position seems to be in the center of the house on the highest floor.
__________________
Eric Juaneda - tech.Juaneda.com - Junilabs.com
  Reply With Quote
Old 7th April 2010, 08:48 PM   #120
diyAudio Member
 
Join Date: Aug 2003
Location: Calgary on the Bow
Thanks for your observations Eric. Can you describe your coil and also what voltage you are running it at? do you feel that your set up covers the whole house? Regards.
__________________
moray james
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Resonator guitars PhaseLockLoopy Instruments and Amps 3 30th May 2008 04:28 PM
Cabinet brace act as helmholtz resonator? RyanW Multi-Way 17 2nd October 2007 11:08 PM
Horn-Resonator? TroelsM Multi-Way 5 29th September 2005 02:23 PM
isobaric resonator? tade Subwoofers 6 17th August 2005 07:24 AM
Ceramic resonator pinout trwh Digital Source 2 21st July 2002 12:35 PM


New To Site? Need Help?

All times are GMT. The time now is 11:08 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2