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 the January 1996 issue of Electronics Now magazine. The circuit is...
This circuit uses a capacitor that depends on the frequency of the crystal. We found it in a 1967...
A new version of the previous circuit triggered by the negative transition of the input signal is...