This circuit is from a technical documentation on the National Semiconductor LM3909. The tripping transformer has a 1:1 turn ratio and the circuit is powered with 5V.
This circuit was found in documentation from the 1980s and can be implemented with modern...
This circuit is from a 1992 documentation, but the components used can still be easily assembled. The...
This circuit was obtained in an old American manual. The circuit is valid for any operational. The...