This circuit is from an old American amateur radio manual. The circuit shows how to use a Varicap on a high power frequency doubler circuit.
ON Semconductor FFSP0665B 650V 6A SiC Schottky Diodes Available through Mouser Electronics, these...
This circuit was found in a 1980s documentation for amateur radio. The circuit is for 9 MHz...
This linear scale circuit can use the current scale of a multimeter instead of the 50 uA...