From: Joerg Hansmann (info_at_jhansmann.de)
Date: 2002-04-21 10:44:50
Hi Andreas,
----- Original Message -----
From: sleeper75se <sleeper75se_at_yahoo.se>
To: <buildcheapeeg_at_yahoogroups.com>
Sent: Wednesday, April 17, 2002 10:29 PM
Subject: [buildcheapeeg] Re: TinyEEG update
> --- In buildcheapeeg_at_yahoogroups.com, "Joerg Hansmann" <info_at_jhansmann.de> wrote:
> Hi Joerg,
>
> > So the next step will be connecting your tinyEEG-amplifier
> > with the ADC ?
>
> Well... since I have this power-rail feedback problem,
Under what test conditions does this problem occurr ?
IIRR you wrote about "problems" when the inputs were open.
Have you done tests with realistic input impedances (e.g.
2 x 20k variable resistors to analog common with a few 100pF
in parallel ) ?
Regards,
Joerg
This archive was generated by hypermail 2.1.4 : 2002-07-27 12:28:43 BST