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 operational amplifier used in this configuration is uncommon today, but more modern types can...
This is a circuit that appears several times in this section and in articles. It is a preamplifier for...
We found this circuit in the August 1994 issue of Electronics Now. The 4046 is unusual today. The...