The diodes are for general use and the transistors also in this Exclusive-OR circuit. The circuit may have the values of the resistors changed to 5 V logic.
We found this circuit in the April 1975 Radio Electronics magazine. The circuit has a latch and...
We found this sophisticated home alarm in a 1994 documentation. The circuit supports sensors of...
This circuit was found in the 1991 Electronics Experimenter's Handbook. It activates a relay when...