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 obtained from Radio Electronics magazine in May 1958. The circuit uses...
This circuit was obtained from the 1995 Encyclopedia of Electronic Circuits Volume 5. The circuit...
This tunnel diode oscillator was found in July 1986, Radio Electronics magazine. Note the low...