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We found this circuit in a PE Hobbyst Handbook from the 90s. The components are common, except the Geiger tube. The transformer is also a component that requires care when choosing.
The integrated circuit used in this configuration is uncommon today. The diodes are for general use...
This oscillator or clock generator generates rectangular signals and frequencies up to 100 kHz....
This power supply with transistor regulation was obtained in a 1995 documentation. The power...