We found this circuit in an Electronic Engineering of the 90s. The circuit can be implemented with any logic and next to the diagram the truth table for the indications is given.
This non-inverting AC amplifier was found on a Popular Electronics. The setting applies to any...
Based on a CA3059 zero-cross switch, this circuit was found in the July 1995 Electronics Now...
This circuit was found in an article in Radio Electronics magazine. The issue is from July 1992...