The figure shows the equivalent circuit for the LM381 audio preamplifier IC. The circuit was found in the February 1990 issue of Radio Electronics magazine.
The original version of this circuit was obtained in a 1995 magazine Electronics Now. The magazine no...
We found this circuit in a Popular Electronics from the 80s. This circuit eventually doesn't work with...
This circuit was found in a 1975 filter cookbook. The operational may be others, but they should...