Re: Group feedback

From: sleeper75se (sleeper75se_at_yahoo.se)
Date: 2001-12-05 10:40:02


--- In buildcheapeeg_at_yahoogroups.com, "sleeper75se" <sleeper75se_at_yahoo.se> wrote:

> ---------> live electrode (+)
> |
> V1 = 100uV sine voltage source
> |
> -----+
> | |
> V3 Z
> | Z 100k 'unbalancing resistor' -
> | Z useless as I simulate with TL071.
> | |
> DRL V2 = as V1
> |
> ---------> reference electrode (-)
>
> V3 = 1.5V 50Hz sine - power line interference.
> DRL = right-leg-drive connection

D*mn, it gets mangled. Is this better:

+---- + V3 - --> DRL
|
+----- + V2 - ------>
|
+----- - V1 + ------>

Anyway, I'm splitting the EEG signal source (V1 and V2) in half and
insert a 50Hz interference signal (V3) in the middle.



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