This is a two-input audio switching circuit. The operational can be of any type and more entries can be added. The power supply must be symmetrical.
This circuit is from a 1977 publication and is characterized by an adjustment of the polarization point of...
This amplifier for instrumentation with very high input impedance was found in a manual of JFET...
This circuit was found in an integrated circuit manual from the 1980s. The circuit can be designed...