This circuit with the XR2206 IC squares the value of a voltage. The circuit was published in the April 1978 issue of Radio Electronics magazine and should be powered by a symmetrical 15 V source.
The circuit shown in the figure is suggested by Maxim (www.maxim-ic.com) and makes use of the...
The circuit shown in the figure below is suggested by ON Semiconductor (www.onsemi.com), based on...
Found in an American 1980s documentation, this circuit makes use of a sensor of the era uncommon...