The integrated circuit used in this application is uncommon today. The circuit is from American documentation from the 1980s. It can be changed to use more modern equivalent components.
This high-performance circuit was found in the 1982 SGS Linear Integrated Circuits Manual. The...
Found in a 90s Electronics Engineering, this circuit makes use of components of the time. The...
Found in a magazine 73 for radio amateurs, this circuit has two settings, one for the interval and the...