T
The little lost angel
I've been noticing in some ATX PSU, they have been putting ferrite
rings (that's the round thing I see on the end of video cables right?)
claiming that it reduces EMI and improves quality of the video output
as well as system stability.
My intuition says that's bullshit because on those leads, the PSU is
delivering power at 12V level, unlikely to be affected significantly
by EMI. Then there are all those caps on the cards and motherboards
that would probably deal with any ripple/noise etc already.
But of course not having any formal training in EE means I could be
the one getting it all wrong. So the question to all the experts is
that: Are these on an ATX PSU leads there for a real engineering
purpose or just marketing as I believe?
TIA!
rings (that's the round thing I see on the end of video cables right?)
claiming that it reduces EMI and improves quality of the video output
as well as system stability.
My intuition says that's bullshit because on those leads, the PSU is
delivering power at 12V level, unlikely to be affected significantly
by EMI. Then there are all those caps on the cards and motherboards
that would probably deal with any ripple/noise etc already.
But of course not having any formal training in EE means I could be
the one getting it all wrong. So the question to all the experts is
that: Are these on an ATX PSU leads there for a real engineering
purpose or just marketing as I believe?
TIA!