A system is provided.  The system comprises a first means forinlet of air from an ambient atmosphere to a confined space, wherein the first means comprises a filter combined with a mechanism to block the airflow when irculation of the air is not required. The system further comprises a second means for outlet of air...

A solar charge optimizing system is provided.The solar charge optimizing system comprises a master controller module, at least one slave module, and at least one photovoltaic module, wherein the slave module is configured to feed solar power derived from the photovoltaic module to a battery backup and a load, wherei...

A power management system (PMS) comprising an automatic static voltage regulator unit (AVR), an automatic mains failure unit (AMF), and a phase switcher is provided. The AVR is configured to continuously monitor an input voltage provided by a power supply and regulate the power supply given to an equipment using th...