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.
Three 4011 NAND gates and two more components - a resistor and a capacitor make this oscillator very...
The integrated circuit used in this project is not common today. The circuit must be powered by a...
This circuit is from an American technical documentation from the 70s, but it can be easily...