Hey brad

What was the res freq of the bifi you have? These 1.2mhz and 1.3, which you had shown at first, are they way above the res freq? Dont remember what yours was.

It seems as though your light test in the 2nd vid to russ, it is possible that if you get rid of the Lt1, Lt2 may get brighter by reducing that added voltage division in the circuit. This is something I hadnt heard of yet for testing and seems to be good.  Like the middle connection between coils is where the load should be? Well thats different for sure. Like the bifi can be used as a sort of supercharger..   Hmm, if we removed r1, would there be balance in the coil and no current in r2? The only thing to set it off balance would be the windings if one is a bit different than the other, like if the ends of the outer windings break off in the same place, one of those, the outer winding, would be a longer wire in the end...


Mags

Quote from: Magluvin on May 01, 2017, 01:01:48 AM
Hey brad

What was the res freq of the bifi you have? These 1.2mhz and 1.3, which you had shown at first, are they way above the res freq? Dont remember what yours was.

It seems as though your light test in the 2nd vid to russ, it is possible that if you get rid of the Lt1, Lt2 may get brighter by reducing that added voltage division in the circuit. This is something I hadnt heard of yet for testing and seems to be good.  Like the middle connection between coils is where the load should be? Well thats different for sure. Like the bifi can be used as a sort of supercharger..   Hmm, if we removed r1, would there be balance in the coil and no current in r2? The only thing to set it off balance would be the windings if one is a bit different than the other, like if the ends of the outer windings break off in the same place, one of those, the outer winding, would be a longer wire in the end...


Mags

Those frequencies seem to be where less P/in for most P/out is.

Never really looked at the specific resonant frequency ,but the ringing in the below picture is it-if you can work that out 

It seems that L1 and L2 must work together,in order to get the high current between them.

Not long got home from work,so it's grab a coffee time,and back to the bench.

Going to try that HF isolation transformer at the center tap of the BPC,and see what i can get out of it.


Brad

Mag's and Stefan

I will no longer be acting as a moderator of this thread.


Brad

It seems like things are getting exciting! And for those who until now never recognize anything special  in the pancake bifilar coils ...... please me, they are so entertained at moment !


Nelson Rocha

Many years in the works ,

actually partzman's open source MEI Bifilar work has been going on for a long time,  it is an ongoing investigation.

more here
http://www.overunityresearch.com/index.php?topic=3445.msg61454;topicseen#msg61454
been at his open source bench there for many years.

respectfully
Chet K

edit: spelling correction