This robot vision circuit was published in the December 1986 issue of Radio Electronics magazine. The circuit uses 9 LDRs as sensors forming a sensor array. The circuit must be powered with 5 V.
This ultra-low distortion driver was found in 80's Analog Devices documentation. The circuit has a...
This second-order filter was found in a documentation from the 90's. It can be implemented with...
This circuit goes into operation producing a sound on a small speaker when the supply voltage...