Parametron and Esaki diode progress in Japan

VARIOUS NEW CIRCUITS for Esaki diode logic have been proposed. Oshima and Amano improved the diode-pair logic so as to facilitate negation; Figure 1. They provided a separate power transformer for each diode pair so that the power circuits may have no common ground. Negation is made simply by reversing the polarity of coupling and the number of diodes are reduced to half of that required in the symmetric scheme.