This circuit was found in a 1980s documentation for amateur radio. The circuit is for 9 MHz signals and values in parentheses for FI of 455 kHz. The circuit can be adapted to other frequencies.
Found in American documentation from the 1990s, this simple circuit excites a LASER diode. The...
This circuit was found in an old American documentation. The integrated circuit used is uncommon...
This circuit was obtained from the February 1990 issue of Radio Electronics magazine. The circuit...