From: Joerg Hansmann (info_at_jhansmann.de)
Date: 2002-04-23 18:18:21
Hi Andreas,
----- Original Message -----
From: sleeper75se <sleeper75se_at_yahoo.se>
To: <buildcheapeeg_at_yahoogroups.com>
Sent: Tuesday, April 23, 2002 1:15 PM
Subject: [buildcheapeeg] Re: TinyEEG update
> Hi Joerg,
>
> > The function generator is normally grounded and
> > the oscilloscope too. Are you sure, you did not
> > built a ground loop ?
>
> Ehm. No. You are right, I probably did. Could this be the cause? I
> guess a battery operated function generator is the only way around
> it.
You can feed the generator output into a small transformer
to get an isolated output. This works only for a limited
frequency range but should be OK for 10Hz sine wave.
Regards,
Joerg
This archive was generated by hypermail 2.1.4 : 2002-07-27 12:28:43 BST