This circuit for frequencies up to a few tens of megahertz was found in the April 1978 issue of Radio Electronics magazine. The power supply must be symmetrical.
The more sensitive the instrument used the better the sensitivity of the indicated meter. We...
Based on the 4017 integrated circuit, this circuit of a European 303 Circuits from the 90s,...
The integrated circuit used in this project is unusual and it includes internal transistors that...