We found this circuit in an old documentation. The circuit can supply loads up to 10W with the original components. The circuit can be designed based on modern components.
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...