Phil Allison" wrote
** Autos have less copper losses and much better bandwidth than
a
isolation type.
Sometimes. Is that what ** means?
Wanna compare figures on a 4:1 impedance step down toroidal
with a
160 VA size core ?
Read the other posts that I agreed with. 4:1 is easy. 400:1 is
nearer what most people would use here. Neither would 160VA be
appropriate in most cases. Care to cite a reasonable comparison?
Care to back up your statement about "much" wider bandwidth, in the
context of an OPT for a domestic valve amp? Can you think of any
other important parameters other than copper losses and bandwidth?
Ever wondered why no-one uses, or supplies, auto-transformers for
valve amp OPTs?
cheers, Ian
|