1. AN ELECTRONIC TRANSLATING DEVICE COMPRISING THIN FIRST AND SECOND SUPERCONDUCTING ELEMENTS SEPARATED BY A THIN INSULATING FILM AT LEAST 30 ANGSTROM UNITS IN THICKNESS, SAID SUPERCONDUCTING ELEMENTS BEING FORMED OF SUBSTANCES WHICH EXHIBIT A CONDUCTIVITY STATE THAT IS RESISTIVE BUT NOT NORMAL; MEANS FOR MAINTAINING SAID DEVICE AT A TEMPERATURE AT WHICH SAID CONDUCTIVITY STATE MAY EXIST WITHIN SAID SUPERCONDUCTING ELEMENTS; MEANS FOR PASSING A UNIDIRECTIONAL CURRENT THROUGH SAID FIRST ELEMENT TO FLUX-COUPLE SAID ELEMENTS AND INDUCE A UNIDIRECTIONAL VOLTAGE IN SAID SECOND ELEMENT.