Found in a 90s Electronic Design, this circuit employs CMOS functions to mix signals from two inputs. Capacitors and resistors depend on how the signals are to be sampled.
This circuit is from an American publication from 1978 and can currently be assembled with minor...
This is a traditional double timer configuration with the 555 found in a 1987 documentation. The...
This circuit was suggested by National Semiconductor in its Linear Applications Handbook. The...