Source related potential indicating continuity tester

Abstract From the Canadian patent

Abstract of the Disclosure, An electrical system fault detector for connection across the source terminals of an electrical system includes circuitry responsive to the relative potentials and current flows between the terminals and a selected point in the electrical system to provide a digital indication of acceptable continuity when current can flow between the selected point and one of the terminals and the potentials thereat are approximately equal. A lack of a digital indication of acceptable continuity indicates a fault such as an open circuit or an excessive impedance between the selected point and the terminal to which it is connected. An incongruous indication would further indicate …