Patent ID: 8205101
Filing Date: 2012-06-19
Classification: G06F

Abstract:
1. A power supply, comprising: a transmission path configured to communicatively couple input conductors of the power supply to output conductors of the power supply to facilitate transmission of communication signals between the input and output conductors; an upstream power terminal configured to terminate an input power conductor such that a supply of power from a separate upstream power source via the input conductor into the upstream power terminal is blocked from passing downstream of the power supply; a power converter communicatively coupled to an output power conductor of the power supply, wherein the power converter is configured to receive power from a power source, convert the power, and supply the power to the output power conductor; a control circuit configured to cycle power supplied by the power converter to the output power conductor based on detection of a power cycle on the upstream power terminal; and a comparator module configured to compare a voltage or current on the upstream power terminal with a threshold value and initiate cycling power supplied by the power converter when the voltage or current on the upstream power terminal falls below the threshold value for an amount of time.