This circuit is from a Mallory 1968’s documentation. The integrated circuit is of the time and the transistor admits equivalents.
We found this circuit in the September 1995 issue of Electronics Now magazine. The circuit has 6...
This circuit causes a buzzer to emit an intermittent tone when the temperature sensed by the...
This circuit was found in a 1994 Electronics Now. The circuit uses an old analog TV flyback and...