Hello, I do eeg research (brainwaves). Signals are on the order of
10 microvolts (millionths of a volt). I need a battery powered instrument to measure noise in my environment on the same order. The Vellemans, Flukes, Teks, and so on I've looked at only get down to .1 mV or 30 microvolts (Velleman 230). This won't do.
1 - does anybody know of a more sensitive, battery powered instrumcnt?
2 - could I build/buy some sort of battery powered amp or preamp for the noise I pick up with an antenna? (was thinking about a 9v guitar preamp)
Thanks in advance for any help....
Jim