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.
Found in documentation from the 1990s, this circuit converts 12 V to 9 V from a car's power...
We found this circuit in a 1969 General Electric documentation. The circuit uses transistors of the...
This voltage doubler is indicated for applications where a voltage equal to twice that applied at the...