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.
I found this circuit in a 1992 Electronics Experimenter Handbook. The circuit can be easily...
We found this circuit in an Analog Devices documentation from the 90s. The circuit is based on a...
The circuit in the figure operates at frequencies from 4 to 20 MHz and also uses a common junction FET...