BV to catodyne SY V0-3

Vol 0-3 Another reaction to Stuart Yaniger's article in Vol 0 about the Cathodyne (aka Concertina) phase splitter, this time by frequent contributor Burkhard Vogel from Stuttgart, Germany. Burkhard has analysed this circuit in a more formal way and comes to the conclusion that Stuart had it right. Vogel even added the complete MathCad derivation in the appendix which you can download. For those who donot have MathCad on their system, here's the PDF version.