STEORN DEMO LIVE & STREAM in Dublin, December 15th, 10 AM

[gravityblock]

Here's a picture of an audio tape.  When the recording tape is equally wound on both sides, then the dimensions are really close to the dimensions of the cores in the Orbo when taking the wire wrapped around it into consideration.  Take both sides to double the height to make one single core or use each side to make two coils.  I speculate the 8mm audio/video record tape would give the exact dimensions without the need to double the height.  I have some, but I can't find them.

GB

[LarryC]

Please note in the following first two image captures from http://www.orbo.org.uk/ (ClanZer's replication), that the yellow colored core can be seen under the single layer of winding. Since Steorn mentioned tape and the high inductance with four toroid's, it is most likely that it is composed of one of materials stated in the last picture from http://www.magmet.com/tapecore.php.

Regards, Larry   

[gravityblock]

Please note in the following first two image captures from http://www.orbo.org.uk/ (ClanZer's replication), that the yellow colored core can be seen under the single layer of winding. Since Steorn mentioned tape and the high inductance with four toroid's, it is most likely that it is composed of one of materials stated in the last picture from http://www.magmet.com/tapecore.php.

Regards, Larry

I've already posted the information on those materials from magmet and nobody was interested.  I've also been talking about tape wound cores and nobody appeared to be interested.  I agree it could be one of those materials in the magmet page, but the effect can be found in the magnetic recording tape also.  It appears the Orbo is based on the magnetic effect of the tape drives.

It may not be recording tape, but we need to start looking at the M-H Curves in more detail instead of just the B-H Curves.  The effect can be found in the magnetic recording tape. 

This is what Steorn has done.  They took the tape drives and re-engineered it.  The dual magnets are the gap for the record/playback head which is recording or playing back the signal to the tape wound core.

They then use the linear components on the tape's M-H curve and apply a DC bias to the signal coming from the dual magnets so that it sits on one of the linear portions of the M-H curve of the tape.  This is what Sean meant by it not being an engineering problem, but the problem is with the "tape drives".  Re-engineer the tape drives and there are no problems.

GB

[gravityblock]

In order to understand how the "tape drives" were re-engineered for the Orbo please read every page of each sub-section on this page, http://www.tonmeister.ca/main/textbook/node417.html

This is absolutely amazing.  After reading this, I'm sure everybody will agree with me.

GB

[teslaalset]

I've already posted the information on those materials from magmet and nobody was interested.  I've also been talking about tape wound cores and nobody appeared to be interested.
GB

GB, don't conclude nobody is interested.
I think its very good that you look for all possible alternatives.
But it takes time to find out what materials suit the ORBO concept.
Right now most of the replicators are investigating MetGlas, but it's very well possible that soon findings will show it's not the proper material.
Naudin is reading this thread as well, he will notice your findings as well.
(I noticed he is online here once in a while). He has already investigated at least 3 different core materials and I bet he will continue to do so.

Please, keep posting you findings. They are interesting.