The purpose of this circuit is to measure the resistance of an antenna at the resonant frequency. The circuit is from an old American documentation for hams.
A VCO or VCF [Voltage to Frequency Converter] can be built using part of a 4048 [PLL] circuit. The...
Maxim MAX20056B 6 Channel High Brightness LED Controller Maxim Integrated makes available through...
Mouser Electronics owns the Littelfuse SP3422 low-capacitance TVS diode arrays. These components are...