This 9-pixel circuit has been implemented with 9 LDRs and can be coupled to a processing system for an elementary artificial eye. The circuit is from Radio Electronics, November 1986.
The integrated circuit used in this 90's circuit is not common today, but the configuration can be...
We found this circuit in a 1976 publication for radio amateurs. It was originally intended for use in...
We found this high input impedance, low output impedance amplification stage in the October 1993...