Found in a 90s Elektor, this mixer makes use of integrated circuits of the time. The supply must be symmetrical at 15 V.
We found this circuit in a Popular Electronics of the 90s. The circuit can also be used as a seat...
This circuit is from the Linear Applications Handbook of the National Semiconductor of 1994. The...
We found this circuit in Radio Electronics magazine from January 1962. The circuit requires a good...