This circuit uses a diode as a radiation sensor. The operational ones are old because the publication is from the 80's, but modern low voltage equivalents can be tested.
Originally designed to analyze the shape of light pulses from a flash for photographic...
This CMOS oscillator circuit generates signals up to a few megahertz, depending on the capacitor value....
Generating sinusoidal signals from 1.5 to 15 kHz, this oscillator uses common complementary...