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 an old Radio Electronics, this circuit is intended for the modulation of composite video...
) This variable frequency oscillator was found in an old American documentation. Transistors allow more...
This ultra-simple experimental receiver can be powered by a battery of water and salt. It was...