... battery heaters, refrigerator, etc;3.Office space: computers, printers, copiers, scanners, digital cameras, etc;4.Power tools: saws, drilling machines, ... , etc;5.Industrial equipments series: solar energy, wind power, gas discharge lamps, etc; PV grid-connected inverter 1 ... efficiency by using advanced IGBT and IPM MPPT(Maximum power point tracking) technology Transformer less, High efficiency In ...