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.
We found this circuit in a publication on operational amplifiers from 1978. The circuit is made...
This circuit was found in a Philips documentation from 1970. The components are of the time,...
Found in a 1967 documentation this circuit can be applied to any operational amplifier. Components...