We found this circuit in the 1992 special edition of the Electronics Experimenter Handbook. The components used are still current, many admitting equivalents.
Found in a 90s documentation, this circuit triggers the SCR when there is an overvoltage in order...
The presented circuit makes use of operational ones that are not common in the market. More modern...
In the figure we have a monostable that is activated with switch S1 and pressed for an instant. The...