Transistor gain meter (CB20522E)

This circuit was found in a publication in the 1950s, mainly applying to germanium transistors of the time.

Overload protection (CB24883E)
This circuit is a continuation of the previous one, serving as a protector against overloads in...
Delay with UJT and SCR (CB21419E)
This circuit was taken from the 1967 General Electric SCR Manual. The circuit can use virtually any...
Three-phase generator 4017 (CB21043E)
This circuit generates rectangular signals with 3-phase outputs. The circuit is from an Electronic...