The coils of this circuit will determine the transmission frequency of this device. The circuit is from the 1960 Mullard transistor reference manual and makes use of germanium transistors.
We found this circuit in a publication from the 1980s. The circuit can still be easily implemented...
This xenon lamp circuit is from old documentation. The trip transformer has a 1: 1 turn ratio and...
This circuit is from an old documentation, but perfectly current. In place of the battery, 2 or 4...