This circuit can be used to obtain a zener voltage from a common zener of another value, adjusting in a multimeter. The circuit is from an American documentation of the 1970s.
This is a circuit that should not be used for readers interested in a fair game. The circuit...
This interesting idea was obtained in a 1982 documentation and can be used for special effects in...
We found this circuit in an old publication from Argentina. The relay must be of the sensitive type,...