Abstract: A power distribution system that provides supervision and protection. Hall effect devices are used to monitor power from a central power supply to a plurality of power converters. Fuses are connected between the converters and the central power source to protect the converters from catastrophic failure. Hall effect devices also monitor the output of power from the converters. A current controlling inductor is included between the converter outputs and the output power bus in order to restrict reverse current flow from a time that is sufficient to allow a circuit breaker to disconnect a failed converter. The Hall effect devices are connected to a computer which monitors the power in and out of the converters. The computer is thus able to detect a failed converter and disconnects it by operating an associated circuit breaker.

Abstract: A circuit which performs both the supervisory functions and transmission functions of a line circuit under control of a Hall effect device. A Hall effect device operates in the magnetic field generated by the transmission transformer to produce a proportionate signal. This signal is used by the Pulse Code Modulation (PCM) processing circuitry of the line circuit for transmission signals and it is used by a level discriminator to generate supervisory signals.