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.
In the old original version of this circuit from 1989, the LED is common (we recommend 330-ohm...
This 1kHz filter with Q = 10 can be applied to any operator. The power supply is symmetrical and...
This circuit was obtained from the July 1970 issue of Radio Electronics magazine. The circuit...