This circuit is from the September 1985 issue of Radio Electronics magazine. The circuit has an LED charge indicator and is based on CMOS logic. The MOSFET must be equipped with a heat sink.
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...