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.
This simple three-LED sensor uses an NTC at the input. The circuit is based on an uncommon...
This amplifier configuration with the LM111 uses cut-off diodes (Clamp) to improve the response. The...
This circuit decodes BCD signals applied to the input providing the corresponding digit on the...