SCR Steady Hand (CB22098E)

This “test your nerves” game was found in old documentation. The SCR can be of any sensitive type, for example series 106.

Hand Dryer (CB18786E)
With this circuit it is possible to use a common hair dryer as a hand dryer. The circuit is timed...
Power supply for LM12 amplifier (CB26149E)
This power supply was found in the same 1990 special issue of Radio Electronics Experimenter...
Three-phase power factor controller (CB7156E)
Suggested by an Electronic Engineering, this circuit uses components of the time. Modern...