Using the 555 and 7400 this circuit was found in the September 1977 Radio Electronics magazine. The power supply must be made with a voltage of 5 V.
This crystal oscillator was found in the February 1968 issue of Radio Electronics magazine. Its...
This xenon flasher version for the power grid is from an 80's EDN. The circuit uses a folder and a...
This circuit is from a factory documentation (National Semiconductor) of the 80's. The power...