In this National Semiconductor circuit, the output voltage is numerically equal to the square root of the input voltage. The circuit is from the 90s and the components are from the period.
This circuit is from 2001 documentation, serving to multiplex stereo signals for FM transmitters. The...
This circuit reverses the signal if both positive and negative. We found it in an American...
Found in a publication by Gernsback from 1960, this circuit makes use of germanium transistors of the time....