Abstract: A system and method for improving energy usage and conservation of at least one air-management unit in a data center where a multiplicity of rack mounted power distribution units are used for power distribution to a multiplicity of electronic devices mounted on a plurality of racks in at least one computer room of the data center. A group of power load, temperature, humidity and differential pressure sensors are provided throughout the racks, and coupled to a computer through a network interface for automatically calculating multiple air-management effectiveness and energy efficiency indices (e.g., rack cooling index RCI, rack humidity index RHI, rack airflow index RAI, rack differential pressure index RPI and return temperature index RTI) based on the data from the sensors, such that the operation of the air-management unit can be adjusted accordingly to achieve an optimal efficiency of safe energy usage and conservation.

Abstract: A system and method for improving energy usage and conservation of at least one air-management unit in a data center where a multiplicity of rack mounted power distribution units are used for power distribution to a multiplicity of electronic devices mounted on a plurality of racks in at least one computer room of the data center. A group of power load, temperature, humidity and differential pressure sensors are provided throughout the racks, and coupled to a computer through a network interface for automatically calculating multiple air-management effectiveness and energy efficiency indices (e.g., rack cooling index RCI, rack humidity index RHI, rack airflow index RAI, rack differential pressure index RPI and return temperature index RTI) based on the data from the sensors, such that the operation of the air-management unit can be adjusted accordingly to achieve an optimal efficiency of safe energy usage and conservation.

Abstract: A network type power distribution device includes a set of program memory, a set of data memory, a micro-controller, a data buffer zone, a control input or output module, an analog-digital converter, a transceiver and an Ethernet port. The network type power distribution device is a single layer structure, which uses a micro-controller to process network information and electricity information directly, wherein micro-controller and software control power management and network communication. Accordingly, it does not need serial communication connection in the interior to solve the problems of waiting time in information transformation and network brand width waste.

Abstract: An UPS apparatus of the invention essentially comprises an AC detecting circuit, a charging circuit, a DC-AC converter circuit, an UPS output circuit, a control circuit and a power plug, wherein the UPS apparatus is installed with an anion producing circuit therein and the external housing of the UPS apparatus is installed with a release aperture to collocate with the anion producing circuit; when the UPS apparatus conducts electricity, the anion producing circuit would be started to proceed the work of producing the anions, and the anions would be dispersed to the external environment to purify the air, to reduce the occurrences of disease and to promote human's health.

Abstract: An improved uninterruptible power supply circuit having a hot swappable battery module is connected with internal connectors of a UPS power supply circuit via external connectors of the power supply circuit. When the supply of the commercial AC power is abnormal, the backup battery provides power to the power supply circuit via the internal connectors in response to signals from the UPS power supply circuit, thereby instantly providing power to the computer and avoiding power interruption, wherein the backup battery is provided in a removable battery box, and several backup batteries can be connected in parallel by means of the removable battery box so as to provide power to the computer in case of long-term power failure.

Abstract: A multiple power sources control system has several power input sides can switch a power source to other power sources of power input sides as original power source of one of power input sides has an abnormal phenomenon (such as no power supply, too low or high voltage and abnormal frequency, etc.) such that loads can keep obtaining supplied power. In addition, power of loads has better protection because of multiple input power supply.

Abstract: Disclosed herein is a DC uninterruptible power system which is composed of a AC voltage and frequency detecting circuit, an AC to DC conversion and charging circuit, a DC voltage conversion circuit, a load detecting circuit, an output voltage detecting circuit, and a control circuit. The UPS of the present invention can minimize the power loss due to one stage conversion so as to improve system efficiency, and maintain a stable output voltage. Beside, a lighting equipment is installed for illuminating surroundings in case the utility voltage becomes abnormal.

Abstract: A compact sized UPS' built-in lighting equipment is disclosed. It is essentially composed of a light source, a shade, a shade, a holder ring, a fixing device, and an erected stand. By erecting the stand in the shade perpendicular to the shade axis instead of protruding the lamp holder parallelly backwards to the shade axis as that has been practically adopted in conventional techniques so as to attain the purpose of minimizing the equipment size. Besides, provision of switch means makes it possible to control ON/OFF of the power supply to the lighting equipment so as to effectively utilize the electrical energy.

Abstract: Disclosed herein is a DC uninterruptible power system which is composed of a AC voltage and frequency detecting circuit, an AC to DC conversion and charging circuit, a DC voltage conversion circuit, a load detecting circuit, an output voltage detecting circuit, and a control circuit. The UPS of the present invention can minimize the power loss due to one stage conversion so as to improve system efficiency, and maintain a stable output voltage. Beside, a lighting equipment is installed for illuminating surroundings in case the utility voltage becomes abnormal.

Abstract: Disclosed is a lighting equipment built-in on-line uninterruptible power system (UPS) Capable of supplying AC sinusoidal power from a single DC source by boosting up the DC voltage of its battery unit and inverting it to an AC sinusoidal output via a DC to AC inverter circuit according to pulse width modulation (PWM) signals successively delivered by a controller circuit during the utility power failure, and at the same time, starts the built-in lighting equipment to illuminate the surroundings. The AC output power is intensified and stabilized through series and parallel connections of the inner circuit components of the UPS.

Abstract: A multiple power sources control system has several power input sides can switch a power source to other power sources of power input sides as original power source of one of power input sides has an abnormal phenomenon (such as no power supply, too low or high voltage and abnormal frequency, etc.) such that loads can keep obtaining supplied power. In addition, power of loads has better protection because of multiple input power supply.

Abstract: A networked-based remotely-controlled power switch device is proposed, which can be coupled to an electricity-powered system, such as a personal computer (PC), a TV, or a video recorder, to allow the electricity-powered system to be powered ON or OFF through remote control by a remote computer system via a network system, such as Internet, Ethernet, or PSTN (Public Switched Telephone Network). This power switch device allows a user without an Internet account to be nevertheless able to use a remote PC system for remote ON/OFF control of the electricity-powered system. Further, in addition to instant ON/OFF control, this power device also allows the user to perform scheduled ON/OFF control to the electricity-powered system so that the electricity-powered system can be automatically powered ON or OFF at a specified time.