The circuit shown was obtained in American documentation from 1968. MOSFETs can be replaced by equivalents. The circuit dissipation is less than 0.5 mW.
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...