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 2000 circuit can be used to match the low impedance of a microphone to the high input...
Figure Bellow shows how to interface CMOS circuitos with TTL using the 4049 or 4050 IC. The power...
The basis of this circuit is a National Semiconductor operational amplifier that functions as a...