Suggested by Siliconix in documentation from the 90s, this amplifier has its gain digitally selected. The components are from that time, not easy to find today.
Found in American documentation from the 90s, this circuit can be applied to other operational ones. We...
This switched circuit was found in an old documentation and no information about the transformer...
This decoder circuit 3 of 8 was found in a publication for PCs from 1992. The circuits are TTL and...