Patent ID: 8768635

Claim:
A system comprising: a power source; a first circuitry comprising: a switch; and a first resistor coupled to the power source and the switch in a first arrangement whereby a first current propagates through the first resistor when the switch is in an open condition; at least one interconnecting wire; a second circuitry coupled to the first circuitry via the at least one interconnecting wire, the second circuitry comprising: a second resistor coupled to the power source in a second arrangement whereby a second current is propagated through the second resistor; and an acquisition circuitry coupled to the second circuitry, the acquisition circuitry comprising: a current-to-voltage converting circuit that provides a first sensing voltage that is proportional to the first current and the second current; and a voltage comparator configured to receive the first sensing voltage as a first input and further configured to receive a reference voltage as a second input, and to output a first comparison value indicative of one of a normal condition or a fault condition of at least one of the first circuitry, the second circuitry, or the at least one interconnecting wire.