I've downloaded and I am reading it happily, with Acrobat 5.
Perhaps the protection is new to the newer versions of
Acrobat. I have not, however, tried to print it.
The super regulator looks awesome. I'd heard about it,
but this is the first time I've been pointed to the correct
reference. Thanks
Glassman.
On the other hand, LM3x7/LT1963 is 15 components
(well, 30 including +ve and -ve) all included, meaning
rectifier, filters and passives, all avaliable from Digi-Key,
and only one (OK, two) critical capacitor (the output
cap for the LT1963 seems to be so, I'd use 50-100 uF with
very low internal resistance). It would need a rather large
(1-2000 uF?) cap as out of the LM317 to feed the LT1963
and, of course, good filters for ripple ahead of the LM317
(the 317 is internally protected so a cap as load should
not blow it up at startup--the protection is good, I ran
a 317 at 250% capacity
overnight once, and it was still
good to go the next morning. Had a heatsink, though).
Perhaps a smallish tantalum (1-2uF), too, at the out of each
regulator. The LM317 sheet suggests yet another cap to
improve ripple rejection, too. This is still at about 15 pieces,
including the bells and whistles. Probably ~$50 in new
parts (if I'm lucky rummaging in my spare parts bins)
including a nice 25VA 22V+22V toroidal transformer, and could
fit in a smallish box with the Gilmore board.
All supplies (SuperRegulator or else) would run at 400 mA
most of the time, with IMHO small load swings mostly because of
the rather ugly nature of the load that the drivers of the cans are,
but I may be wrong here, especially for low impedence cans
(i.e. high power delivered to the load).
The real question is, what's the difference on the
audio side? Hmmm. I suppose it's all about the dynamic
behavior of the PSU--how do you measure that?
And how does the difference translate into color?
OK--how do you measure that, short of rigging some
really fancy gear for the purpose? Any ideas?