We found this circuit in a 1996 publication. Equivalent components can be tried, especially in the case of the photodiode. The circuit is powered by a 12 V source.
This circuit interferes with the operation of infrared remote controls. Your radiation should be...
This input stage has unit gain but a high input impedance and low output impedance. The circuit is...
This variation circuit with the L121 A was found in the SGS manual of integrated circuits of 1982....