Alpha Technologies Inc.

Thomas S Osterman

Fereydoun Mekanik

Donald C Sorenson

Gregory Scott Zediker

Brian M Kennedy

A system and method for providing a power signal to a local service portion of a communication system located in a densely populated area. A power multiplexer is provided having first, second, and third input connector assemblies, an output connector assembly, and a switching network. The output connector assembly is connected to a load in the communications network that is normally provided by a local utility power source. The input connector assemblies are connected to remote power sources of the communication system located outside the given local service area. The switching network connects one of the input connectors to the output connector assembly to pass to the load, as necessary, a power signal generated by one of the remote utility power sources. Because the remote utility power service and the local utility power service are unlikely to be disrupted in many situations, reliable power can usually be obtained even if local service is disrupted.

Power multiplexer for broadband communications systems

A cable TV distribution system in which an AC power signal is generated according to the following steps: (a) generating an AC power signal having at least a positive half-cycle, where the positive half-cycle comprises a rising portion, a falling portion, and a central portion; and (b) limiting the slew rate of the AC power signal within the rising portion to a range of 30 V/ms and 50 V/ms inclusive. Preferably, the slew rate of the AC power signal within the falling portion is limited to the range of -30 V/ms and -50 V/ms inclusive. The AC power signal is preferably generated by a power supply comprising: (a) a ferroresonant transformer; (b) a ferro-capacitor connected across the first and second terminals of the output windings of the ferroresonant transformer; (c) an inductor connected across the first and second terminals in parallel with the ferro-capacitor; (d) a switch for preventing current flow through the inductor in response to a switch control signal; and (e) a control circuit for generating the switch control signal to obtain the desired AC power signal.

Apparatus and methods for generating an AC power signal for cable tv

A broadband communications network having an uninterruptible power supply. The power supply has one input connection to AC line voltage and another input connected to a gas powered electrical generator. The power supply contains an uninterruptible power supply module having a controlled ferroresonant transformer and a battery. The power supply also contains a bypass module having a controlled ferroresonant transformer. Switches are provided to allow either of the inputs to be connected to either the UPS module or the bypass module for the generation of power signals for supplying power to the broadband communications network.

Apparatus and methods for generating uninterruptible AC power signals

A broadband communications network having an uninterruptible power supply. The power supply has one input connected to AC line voltage and another input connected to a gas powered electrical generator. The power supply contains an uninterruptible power supply module having a controlled ferroresonant transformer and a battery. The power supply also contains a bypass module having a controlled ferroresonant transformer. Switches are provided to allow either of the inputs to be connected to either the UPS module or the bypass module for the generation of power signals for supplying power to the broadband communications network.

A cable TV distribution system in which an AC power signal is generated according to the following steps: (a) generating an AC power signal having at least a positive half-cycle, where the positive half-cycle comprises a rising portion, a falling portion, and a central portion; and (b) limiting the slew rate of the AC power signal within the rising portion to a range of 30 V/ms and 50 V/ms inclusive. Preferably, the slew rate of the AC power signal within the falling portion is limited to the range of -30 V/ms and -50 V/ms inclusive. The AC power signal is preferably generated by a power supply comprising: (a) circuit that generates a first drive signal having a first portion comprising a series of pulses, a second portion comprising a series of pulses, and a third portion comprising a single pulse; (b) a drive circuit that generates a pulsed power signal the timing of which corresponds to the timing of the first drive signal; (c) a transformer; and (d) an output capacitor for integrating the output of the drive circuit.

Growing community of inventors

Bainbridge Island, WA, United States of America

Thomas S Osterman