From: yaniv_vi (yaniv_vi_at_yahoo.com)
Date: 2002-02-18 18:45:25
hi joerg
great work ! especially the drl(seen the graph , pretty impressive.
does it works like this for other kinds of radiated interference?)
and the "light" version idea .
cheers mate ,
yaniv
--- In buildcheapeeg_at_yahoogroups.com, "Joerg Hansmann" <info_at_jhansmann.de> wrote:
> Hi,
>
> on
>
> http://www.jhansmann.de/eeg/eeg.html
>
> you can find the new schematic of the modularEEG amplifier section.
>
> It is partially verified by LTspice simulations and
> a simplified prototype (comEEG with DRL)
>
> Nearly each part of the new design can be bypassed, because it is
> modular in itself:
>
> The optional parts are:
>
> 1) input ESD/user protection
> 2) DRL circuit
> 3) anti-alias filter
> 4) virtual ground (can be replaced by external +-5V supply,
additional clipping stage required to protect ADC inputs in this
case)
>
> So it is possible to build a "light" version without the above
> parts.
>
> The new design does not use shield drivers because they do not
make much sense
> together with a DRL. Also without shield drivers HF rejection is
much easier.
>
> Regards,
>
> Joerg
This archive was generated by hypermail 2.1.4 : 2002-07-27 12:28:38 BST