This excellent tube preamplifier was found in Radio Electronics magazine from July 1958. The power supply was not included. The circuit has several inputs.
The figure shows how to use the LM3914 bargraph with expanded scale. The circuit has two...
November 2016 - Mouser Electronics is indicating in its inventories the new NXP Kinetis L MCUs....
This circuit was found on a Radio Elettronica (Italy) from April 1974. The circuit can be easily...