This circuit was found in a 1968 General Electric documentation. It has an input impedance of 2 M ohms and excites a load of 16 ohms. The integrated circuit of the time is the PA237.
In the figure we have a line receiver circuit (twisted pair) with the possibility of...
-- We find this configuration very simple in a previous American publication of 1973. The...
November 2016 - Azoteq IQS572-B000 ProxSense, a Toucjscreen and Trackpad controller designed for...