This simple 15 V power supply was found in an article describing an assembly in the January 1987 Radio Electronics magazine. The power supply is used to power the circuit described.
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...