Analog multiplying circuit

Abstract

Abstract PURPOSE:To eliminate a malfunction and to improve a processing speed by on and off controlling between a resistance serially connected between a signal input terminal and the inversion input end of an arithmetic amplifier and an earth point by a diode circuit. CONSTITUTION:A synthesized resistance value is weighted between the signal input terminal Ti to which the output end of a signal generating circuit la is connected and the inversion input end of the arithmetic amplifier 5 and the respectively serially connected resistances 2a and 2b, 3a and 3b and 4a and 4b are connected in parallel. The diode circuits SW1-SW3 on and off controlled by a value corresponding to the prescribed weight of a multiplying factor setting data are interposed between a the connecting point and the earth point of these resistance.

Inventors

• 👤 Akira Ozawa

Bibliographic Details