From: sleeper75se (sleeper75se_at_yahoo.se)
Date: 2002-02-04 01:58:21
--- In buildcheapeeg_at_yahoogroups.com, "Jim Meissner" <jpmeissner_at_mindspring.com> wrote:
> I am trying warn you of pitfalls without squashing your
> creative juices. Step one is to build "something" and test.
> Then you will have an opportunity to determine whether this
> driven shield is a good idea or not.
Hi Jim,
I will try both ways when I get to the building stage.
Right now, I'm waiting for the parts to arrive.
> Also I am not convinced that this fancy filter is needed
> unless it was designed to reduce the 50/60 Hz interference.
> My design used no filters and worked quite well.
It is possible that the filter is overkill in some (most?) instances,
but can you really be sure about what kind of interference exists
above 60Hz and is picked up by the body? The filter guarantees that
there is no aliasing within the filter amplifier bandwidth (< 1MHz).
Regards,
Andreas
This archive was generated by hypermail 2.1.4 : 2002-07-27 12:28:38 BST