This radio for the AM band has the traditional superheterodyne configuration with several transistors and integrated audio amplifier circuit. The circuit is from the 70s.
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...