The Hall-Effect Analog Multiplier

The application of the Hall effect to a general-purpose four-quadrant multiplier is discussed. Circuit diagrams for the transistor amplifiers are given. An evaluation of the experimental results is given for a breadboard model of the multiplier. Static accuracies on the order of 1 per cent to 3 per cent are obtained for the Hall channel and the magnetic channel, respectively. Bandwidths of 25 kc and 1.3 kc are achieved for the Hall channel and the magnetic channel, respectively.