This circuit was found in the June 1982 issue of Radio Electronics magazine. It provides reference voltages for calibrating instruments such as oscilloscopes.
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...