Found elsewhere in this section, this circuit mimics the noise of a steam locomotive. This was obtained from an Electronics Today International of the 1980s.
We found this circuit in an old American documentation. The circuit is suitable for motorcycles and...
This circuit was found in a 1977 Radio Handbook. Transistors admit equivalents. The lamp is an old...
This circuit was found in an old publication about transistors. The circuit can be used to drive...