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 uses a pressure switch to turn a relay on or off. The supply must be 6 or 12 V...
The FET used can be an equivalent like the BF245 or MPF102 and the operational one also admits an...
This circuit for testing sources up to 10 A was found in the magazine Radio Electronics Special...