The operational amplifier used is not common today, but the circuit can be implemented with modern operational ones. The gain is 1000 and the source must be symmetrical.
We found this circuit in a 1981 publication. We applied an audio signal, for example, a music...
The circuit presented was obtained in the 1994 Linear Applications Handbook from National...
An inproved version of the circuit CIR129E is shown here. The resistorR1 must be at least 5 times...