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.
Found in a 90s 73 magazine, this circuit uses an unusual component today which is the XR2206. |...
An audio amplifier of good power, and great sensitivity; a simple tuning step and a detecting...
This automotive circuit was found in the June 1997 issue of Electronis now magazine. The circuit uses...