Inverter circuit is a DC-AC (DC - AC) converter, it's working process is the inverter switching power supply.The role of the switching power supply is the AC voltage of the electricity grid into a stable Vcc voltage (12V or 24V)
Gateway W340UI Inverter circuit is just the opposite, it is a switching power supply output Vcc voltage (12V or 24V) into a high-frequency (40~ 80kHz) high pressure (600 ~ 800V) AC.