We found this time base circuit in a timer project from the August 1972 Radio Electronics magazine. The circuit takes advantage of the 60 Hz signal from the power grid.
This headphone amplifier was found in a 1966 documentation. The transistor is made of germanium and the...
The signal injector illustrated in the figure uses a single integrated circuit and generates...
The note sequence for this circuit is achieved through integrated circuits controlled by the 555....