This wide-range radiation monitor was found in a 1980s documentation. The circuit uses a diode as a sensor and is quite critical requiring shielding shown in dashes to prevent snoring due to gain.
This circuit was found in a 1967 US documentation. The circuit applies to modern general purpose...
This is an interesting idea that we found in the May 1971 issue of Radio Electronics magazine. It can...
The frequency range of this circuit depends on the transistors used. The circuit is from a Radio...