This circuit was found in documentation from the 80s. It is based on unijunction transistors not very common today being synchronized by the 60 Hz power grid.
This source of two voltages and two currents was found in documentation translated from Argentina. We...
This circuit was obtained in a 1991 Electronics Handbook. The publication no longer exists, but...
This circuit is from a Radio Electronics from February 1965. The transistor is general-purpose germanium at...