Found in the CQ radio amateur magazine, this circuit generates a standard 100 kHz signal. The circuit is from 1965 and can be made with modern equivalent transistors.
The maximum amplitude of the input signals must be 5 volts and the power supply must be...
The JFETs of this old circuit admit modern equivalents and their characteristics determine the maximum...
This sophisticated high impedance input millivoltmeter was found in French documentation from the...