This circuit was found in a 1965 General Electric documentation. SCRs and unijunction may be current equivalents. The circuit has period adjustment and symmetry.
Although the output voltage obtained is high, the current is very low, given the power of the...
This circuit is from an old publication from the 70s, but it can be implemented with modern diacs...
This level matrix display was found in a 1994 documentation, but it can still be assembled, as the...