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.
This circuit is suggested by the National semiconductor and is based on an increased power...
The setting of this power supply is only 0.1%. We found it in a 1969 US documentation. Transistors...
This circuit amplifies signals from 0.5 Hz to 300 kHz. We found it in an old documentation. Equivalent...