This space is reserved for technical articles regarding transformer design as well as tube amplifier design. The articles are availabe as pdf documents.
Some articles will be rather extensive, while others are meant to give you an answer to a typical FAQ problem.
case-1, 2, 3, 4, 5 dimensions, drilling plan etc..
Ward 150 SE BLOG
A very nice improved triode cathode follower to drive difficult loads with low THD
Another excellent article on grounding at diyaudio
Journey to the center of a vacuum tube by the guy's of tubedepot : very educational, a must see
Benefits of using a 1:1 interstage transformer explained by Andy Grove at Audionote
Basic information on tubes and simple circuits for beginners
Must read original articles from the golden age of valve technology
How amophous metals are made by metal spinning as explained by
Melt spinning amorphous metals filmed at 4000 fps