The power transistors from this 1999 source must be mounted on excellent heat sinks. The circuit is suitable for supplying automotive devices up to 30 A. The 13.8 V output is set to P1.
With this circuit it is possible to excite direct current relays from an alternating signal,...
This circuit is from an old documentation. The integrated circuit can be replaced by a modern...
The FET can be a BF245, and the other transistors can be the BC548 and BC558 in this simple AM...