I would like to give an update on my activities since finishing my Rodin Coil.

I found my signal generator.  The first night I tried to use it, it stopped working.  I thought I had broken it and went to bed discouraged.  The next day I found that the casing was loose and the cap range selector knob had come apart inside.  I had trouble with this thing months ago; I forgot how temperamental it is.

My oscilloscope is still packed away but, as I always do when testing coils, I set my AM radio on the lowest frequency and placed it next to the ring during testing.  Even with fresh batteries, the sine wave is weak from my SG.  So, I tried the square waves and then I was able to hear "clicks" on the radio at lower frequencies which turned into tones of increasing pitch as I increased the frequency.

When I got to the 530 kHz range, my digital AM radio showed that it had locked into a signal at that range.  So, I moved the radio up a few notches until I found a station, I think it was 560AM or thereabout.  Then I slowly increased the frequency of my SG until it effectively blocked the radio station.  At this point I moved the radio away from the coil a few feet and then I could start to hear the radio station again, despite the blocking.  I have seen these effects with other coils that I have tested.  No big deal here.

I then found a coil, about the size and weight of a full penny-roll, that was once a part of my grandfather?s old 120V tester, placed it in the middle of the ring and connected it to a Fluke multi-meter.  At one particular frequency, somewhere in the 100 kHz range, I found a 20V AC reading on the Fluke-12.

I had a small compass in and around my coil during all of these frequency sweeps?nothing, no spinning.

Now, I am thinking about how to drive more power into my ring, and in the form of sine-waves, as the Rodin videos suggest.  I need to locate a patch cord to connect my computer headphone jack to my old ghetto-blaster.  Then I will hook-up my coils to the left and right speaker jacks, find a good free program to generate sine-waves that I can control the left and right speakers independently, and crank up the volume.  I am thinking that if I get any dangerous feedback my old boom-box will take the hit and spare my PC any damage.

In the meantime, EM Devices has caught my attention with his Tiny TPU.  If he posts enough data to replicate it then I will want to make the attempt.

Rosphere--more later

Quote from: Rosphere on November 14, 2007, 02:07:46 PM
... find a good free program to generate sine-waves that I can control the left and right speakers independently,...

I was up late last night fishing around for a good program.  I downloaded a few and played around with them.  Most do not go above 100~200 kHz; I suppose that this is because higher frequencies are inaudible to humans and outside the reach of a PC sound card.  Even with this lower frequency limit, I am still interested in testing my Rodin Coil with more power.

To access the higher frequencies, with more power, I may be able to patch my signal generator through my boom-box.  However, this limits me to one signal, not two as with the software generators.

I hope that I discover something interesting to report this weekend.

@all

As a matter of interest I was reading Rodin's site and came across the document by Tom Bearden towards the end which appears to explain how to generate OU from a coil like Rodin's... I have posted an annotated copy with my explanations on the TPU End Game thread here:

http://www.overunity.com/index.php/topic,2702.msg59428.html#msg59428

Acerzw 

Quote from: Rosphere on November 14, 2007, 02:07:46 PM
...I need to locate a patch cord to connect my computer headphone jack to my old ghetto-blaster....

I just found a nice one.  "Victory is mine!"


EDIT: My first test, induction from one coil to the other. (~3.9V sinusoidal wave input on first coil.)

Quote
To access the higher frequencies, with more power, I may be able to patch my signal generator through my boom-box.  However, this limits me to one signal, not two as with the software generators.

Hi Rosphere

You might try the parallel port and a step drive circ for delivering pulses http://electronics-diy.com/electronics/stepper_motors.php