Patent ID: 11967459
Assignee: THE BOEING COMPANY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  E | IPC B  E  H

Claim 0:
1. A system comprising:
a latch circuit configured to monitor a switch and to operate an electronic latch based on a position of the switch; and
a power supply circuit configured to provide a voltage level to the latch circuit on a coupling coupled to an output terminal of the power supply circuit and coupled to the latch circuit, wherein the voltage level is:
a predefined first voltage level during normal operations, and
a predefined second voltage level different from the first voltage level during power loss,

wherein the power supply circuit comprises:
a primary power circuit configured to provide the first voltage level on the coupling; and
a plurality of supercapacitors configured to be charged by the primary power circuit and provide the second voltage level on the coupling;

wherein the latch circuit comprises a power failure detection circuit coupled to the coupling and configured to determine a presence or loss of power from the primary power circuit based on whether the voltage level on the coupling corresponds to the first voltage level or the second voltage level.