Used in radio reception, this circuit was found in the February 1983 Radio Electronics magazine. The integrated circuit is the NE570 IC, and the power supply is 3.6 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...