PHYS345 Electricity and Electronics

Hint for P14-3

Derive the gain of 100 from a differential configuration. The input impedance of this part of the circuit will be Ri+Rf. How can the remaining two op amps be used to increase the effective impedance seen by the electrodes?

Last updated Dec. 1, 1998.
Copyright George Watson, Univ. of Delaware, 1998.