This circuit was found in an Electronic Design from the 90s. The shapes of the signals obtained as result of the inputs are shown next to the diagram.
This circuit is from 1968 documentation. We can assemble it with more modern components such as a...
Found in a 90s Silicon Chip documentation this circuit is intended to protect a speaker system in...
The UVTRON tube is an ultraviolet radiation sensor. In this circuit from Radio Electronics from...