I can't find the answers to these in the books and I've wondered about them
for years.
When winding a coil on a standard (say 1/4") former with ferrite or iron
dust core, should the secondary be wound adjacent to the "hot" end of the
primary or the earthy end? Also, should the earthy end of the secondary be
adjacent to the primary hot end or earthy end?
What's the difference between dust iron and ferrite cores and can you tell
the difference by just looking at them?
Thanks. Howard.