10 May
2012
10 May
'12
10 a.m.
On Wed, May 09, 2012 at 10:06:23PM +0200, Arnold Krille wrote:
I thought the same when it comes to audio equipment.
But one of my electronic
mentors teached me: "Isn't it better to have a PSU with internal frequencies
well in the MHz region to influence your audio (where its easy to filter) than
having a PSU with 50Hz and harmonics to influence your audio?"
Your mentor is missing the point that even for a switched mode PSU the
input is 50 or 60 Hz, and *something* has to store enough energy to bridge
the gaps between half cycle peaks. So you'll get mains harmonics anyway,
just as with a linear PSU.
Ciao,
--
FA
A world of exhaustive, reliable metadata would be an utopia.
It's also a pipe-dream, founded on self-delusion, nerd hubris
and hysterically inflated market opportunities. (Cory Doctorow)