[Amps] Transformer reference information

[John Darwin Powers]

Dear electronators,
Thanks to those who helped transform my knowledge base and increased  
my core knowledge of such an important subject.  One thing that all  
members of this group should be proud of is that all of you are able  
to motivate yourself to learn and to share your knowledge with  
others  ..... contrast this to those who are addicted to video  
games.  No matter if you are a fan of Sencore or HP, you are all  
special.  One other question if I may, any opinions on toroids v.  
traditional cores in a power application?  Other information ... I  
don't know if any one has seen this companies' site before, but it  
appears that they are more than willing to accommodate small sales  
and the diy transformer builder.
http://www.isomatic.co.uk/
John