Good evening all.

Please advise a circuit for a preamplifier (low noise) of an Bio potential Recorder?


Thanking You.

 

Hello,

I have no idea what you are talking about.
There is to less information on what you want to do.
This is waht I found on google images:
Bio potential Recorder

Bertus

 

How do you plan to use this device?

 

Maybe he is measuring brain waves and has a lot of "power line interference" because lamp cord wires were used instead of a good shielded audio cable.