The movement of the LEDs in this circuit mimics the back-and-forth movement of a pendulum, making it suitable for clock projects. The circuit is from a Radio Electronics magazine from May 1978.
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...