Approved by the FCC, this circuit was found in documentation from the 1980s. The circuit uses an unusual component today.
We found this circuit in the April 1993 Electronics Now magazine. Almost any general-purpose JFET...
I got this circuit from an English magazine from 1977. It can still be easily assembled, as the...
Found in a 1967 General Electric SCR manual, this circuit can be used to protect a load by...