Using a component of the era, this 1968 Mallory circuit uses an output transformer whose characteristics were not provided in the original documentation.
We do not know exactly what sound a flying saucer makes, or if it makes a sound! But this is not...
This circuit was published in an English magazine from 1977, but it can be easily assembled since...
This circuit for modeling was found in a 1980s documentation. The SCR can be the TIC106 and the...