Abstract: A number of load units are connected to receive power from a number of power supply units. A potential load bus is connected to have a voltage level representative of both a total potential power requirement of the number of load units and a total potential power supply capability of the number of power supply units. A first control circuit enables operation of the number of load units when the voltage level on the potential load bus indicates that a sufficient supply of power is available. An actual load bus is connected to have a voltage level representative of both an actual total power consumption of the number of load units and an actual total power supply available from of the number of power supply units. A second control circuit signals an impending loss of sufficient power supply based on the monitored voltage level on the actual load bus.

Abstract: A number of load units are connected to receive power from a number of power supply units. A potential load bus is connected to have a voltage level representative of both a total potential power requirement of the number of load units and a total potential power supply capability of the number of power supply units. A first control circuit enables operation of the number of load units when the voltage level on the potential load bus indicates that a sufficient supply of power is available. An actual load bus is connected to have a voltage level representative of both an actual total power consumption of the number of load units and an actual total power supply available from of the number of power supply units. A second control circuit signals an impending loss of sufficient power supply based on the monitored voltage level on the actual load bus.

Abstract: A number of load units are connected to receive power from a number of power supply units. A potential load bus is connected to have a voltage level representative of both a total potential power requirement of the number of load units and a total potential power supply capability of the number of power supply units. A first control circuit enables operation of the number of load units when the voltage level on the potential load bus indicates that a sufficient supply of power is available. An actual load bus is connected to have a voltage level representative of both an actual total power consumption of the number of load units and an actual total power supply available from of the number of power supply units. A second control circuit signals an impending loss of sufficient power supply based on the monitored voltage level on the actual load bus.

Abstract: A number of load units are connected to receive power from a number of power supply units. A potential load bus is connected to have a voltage level representative of both a total potential power requirement of the number of load units and a total potential power supply capability of the number of power supply units. A first control circuit enables operation of the number of load units when the voltage level on the potential load bus indicates that a sufficient supply of power is available. An actual load bus is connected to have a voltage level representative of both an actual total power consumption of the number of load units and an actual total power supply available from of the number of power supply units. A second control circuit signals an impending loss of sufficient power supply based on the monitored voltage level on the actual load bus.

Abstract: A securing device for retaining a power cord in a connected relationship with the power supply includes a substantially planar body having a first end and a second end. The first end is configured to engage the power supply. The second end is configured to engage the power cord. The body is made from a substantially rigid material.

Abstract: A securing device for retaining a power cord in a connected relationship with the power supply includes a substantially planar body having a first end and a second end. The first end is configured to engage the power supply. The second end is configured to engage the power cord. The body is made from a substantially rigid material.

Abstract: An electronics module comprises a housing; and a plurality of electronic and electrical components for example fans. The module includes electromagnetic shielding for example perforated panels side walls etc. that is associated with the housing and/or the electronic components, and which provides a Faraday cage for the electronic components. The shielding is constructed so that one or more of the components can be removed from the module while the module is in operation substantially without affecting the integrity of the Faraday cage. The module enables certain components thereof to be replaced without adding to the downtime of the system or increasing electromagnetic interference.

Abstract: An electronics module comprises a housing; and a plurality of electronic and electrical components for example fans. The module includes electromagnetic shielding for example perforated panels side walls etc. that is associated with the housing and/or the electronic components, and which provides a Faraday cage for the electronic components. The shielding is constructed so that one or more of the components can be removed from the module while the module is in operation substantially without affecting the integrity of the Faraday cage. The module enables certain components thereof to be replaced without adding to the downtime of the system or increasing electromagnetic interference.

Abstract: A modular electronic circuit is described wherein mother and daughterboards are arranged in perpendicular planes extending from front to rear within the modules. Ventilation openings in the front and rear faces, and one or more ventilation units mounted to the front and/or rear faces, provide a substantially rectilinear airflow through the module. The absence of transverse vertical barriers to airflow enables a more efficient use of the internal volume of the module for electronic circuitry and reduces fan power requirement and noise generation.