This game was found in an old Popular Electronics. The unijunction transistor can be 2N2646. The supply can be done with voltages from 6 to 12 V.
Found in old documentation about neon lamps, this circuit produces very low frequency signals that...
Although it is a common configuration today, this circuit was taken from an old publication. The...
This circuit is from a factory manual from the 80s. The circuit can be implemented with more...