This circuit makes use of a special LM195 power transistor not very easy to obtain. The circuit is from the 1994 Linear Applications Handbook by National Semiconductor.
This National Semiconductor circuit uses integrated circuits that are uncommon today. The circuit...
The circuit in the figure is very interesting because it simulates an SCR triggered by light. When...
This circuit is from a 1998 Electronics Now and can be easily assembled since it uses a common...