It serves as a reference, since today we can have simpler and more compact solutions. This circuit is from an Electronics Experimenter Handbook from 1992. The integrated circuits are from that time.
This circuit was found in a Radio Electronics issue from May 1989. Please note that it may not...
The circuit in the figure is very interesting because it simulates an SCR triggered by light. When...
The circuit shown is a suggestion by National Semiconductor in its 1994 Linear Applications...