This circuit was described in an article in Electronics Now magazine in December 1995. The circuit uses integrated circuits that are still well known today.
This circuit causes an LED to flash if the monitored voltage exceeds the value set in the pot. The...
This circuit was found in a Radio Electronics from the 90's. It provides lower frequency signals from...
We found this circuit in the January 1970 issue of Radio Electronics magazine. The transistors are general...