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

Claim 7:
8. An apparatus comprising:
a power source configured to provide power to a current loop for transport to a power receiver, wherein the power source includes an AC-DC conversion circuit coupled to an AC power supply and converts AC power to DC power;
an isolation circuit coupled to an output of the AC-DC conversion circuit and configured to provide isolation for both voltage and ground;
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; 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 by terminating operation of a pulse control signal to the isolation circuit to provide pulse power from the AC-DC conversion circuit to the current loop.