home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: sci.electronics
- Path: sparky!uunet!mcsun!chsun!bernina!schaerer
- From: schaerer@isi.ethz.ch (Thomas Schaerer)
- Subject: Re: How does EEG's work?
- Message-ID: <1992Dec14.185309.21059@bernina.ethz.ch>
- Sender: news@bernina.ethz.ch (USENET News System)
- Organization: Swiss Federal Institute of Technology (ETH), Zurich, CH
- X-Newsreader: TIN [version 1.1 PL8]
- References: <cantrell.724092668@sauron.msfc.nasa.gov>
- Date: Mon, 14 Dec 1992 18:53:09 GMT
- Lines: 10
-
- Eric Cantrell (cantrell@sauron.msfc.nasa.gov) wrote:
-
- : 3) I know that EKG's use some kind of dual precision amplifiers, does EEG's
- : pretty much use the same scheme?
-
- If you build the amplifier with opamps, you need THREE opamps to make a
- instrumental-amplifier with symmetrical high-input-impedance. But there are
- integrated instrumental-amplifier too.
-
- Bye Thomas
-