Patent ID: 11923678
Assignee: CISCO TECHNOLOGY, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 18:
19. An apparatus comprising:
a power source configured to provide power to a current loop for transport to a power receiver, wherein the power source is configured to provide alternating current (AC) power to the current loop;
at least one current sensor coupled to a current loop to sense current on the current loop; and
a controller coupled to the at least one current sensor, wherein the controller is configured to:
determine whether a current level on the current loop passes a safety check within a predetermined time interval since a determination that the current level was not within a safe range, which corresponds to an expected recurring performance of a power interruption operation performed by the power receiver during which the power receiver stops receiving power from the current loop for a period of time, wherein the power receiver disconnects from the current loop to stop pulling power for multiple different periods of time that encompass corresponding multiple different portions within one period of an AC waveform of the AC power to enable the controller to determine whether the current level on the current loop passes a safety check, wherein the multiple different portions of the AC waveform include a first portion that encompasses a zero crossing of the AC waveform and a second portion that encompasses a peak of the AC waveform; and
generate a control for connectivity of the power to the current loop depending on whether the safety check has or has not passed within the predetermined time interval.