Patent ID: 11916373
Assignee: GE AVIATION SYSTEMS LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 4:
5. A circuit, comprising:
a power switch operable to supply power from a power source to an electrical load;
a power cable electrically coupled between the power switch and the electrical load, the power cable having a conductive shielding;
a sensor configured to sense an electrical characteristic of the circuit, the electrical characteristic of the circuit being a voltage of the conductive shielding or a current at the power switch output;
a controller module communicatively connected with the power switch and the sensor, and configured to control a supplying of power from the source to the electrical load, to receive the sensed electrical characteristic of the circuit, and to controllably cease the supplying of power from the power source to the electrical load, by the power switch, in response to determining the received sensed electrical characteristic is indicative of a presence of a fault; and
a comparator module communicatively connected with the sensor and configured to receive the sensed electrical characteristic of the circuit, and upon failure of the controller module to controllably cease the supplying of power from the source to the electrical load by the power switch, operably control an active pull down switch to redirect the supplying power from the power source to an electrical ground;
wherein the power switch and the active pull down switch are arranged in series between the power source and the electrical ground.