This circuit was found in a Radio Electronics from February 1966. With it it is possible to trace the curve of a tunnel diode visualizing it on an oscilloscope.
This car alarm was obtained in a Signetics documentation from the 1980s. The circuit uses the 555...
The frequency of this circuit can be varied from zero. The circuit uses the CMOS 4046 and was...
This simple binary counter triggers two LEDs according to the number of pulses applied to the...