We found this circuit in the November 1984 Radio Electronics magazine. The base frequency is given by C1. The power supply can be between 3 and 12 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...