This sophisticated decade of benchtop resistors was found in the November 1989 issue of Radio Electronics magazine. The circuit is supposed to use precision resistors.
This electronic “windsock” is operated by a magnetic switching system. It was found in a Radio...
Found in a 1967 RCA manual, the purpose of this circuit is to keep the coffee warm in an electric...
With the use of a very sensitive and lockable relay this circuit can be used in intervals of 15 to...