Found in an Electronic Design from the 90s, this circuit provides outputs according to the input following the truth table given next to the diagram. The various options are shown.
This circuit is recommended for alarm systems since it has a good output stage. The circuit is...
) Suggested by Philips in a 1968 documentation this circuit has very high 10 ohm on-load voltage...
No information is given about the transformers in this circuit suggested by Motorola in a 1968...