From: sleeper75se (sleeper75se_at_yahoo.se)
Date: 2002-03-14 06:30:58
--- In buildcheapeeg_at_yahoogroups.com, Sar Saloth <sarsaloth_at_yahoo.com> wrote:
> I will comment (ha, you knew that would happen). You can increase
> the common-mode impedance by replacing your second stage pi filter
> with one that includes in inductor in the ground (just like your
> input stage with the beads). Even for commercial medically
> approved supplies, common mode noise is a big issue, and even when
> they claim that the supplies meat everything, sometimes you have
> to add more common-mode impedance.
>
> If you want to see proof - sorry, I am not able to provide any.
Gee, I suppose I will have to put in that extra $2.50 toroid on pure
faith then. ;o) I was afraid I was overdoing it, not the other way
around...
Since we're on that note: how about putting each filter stage in a
shielded enclosure of its own, at least for the first three stages? A
sort of staggered shielding if you will.
Regards,
Andreas
This archive was generated by hypermail 2.1.4 : 2002-07-27 12:28:40 BST