If you need the actual PDF, try appending filetype:pdf to your search query: "inverter schematic" 1000W 12V 220V filetype:pdf Or search for "EG8010 1000W inverter schematic" PDF .
(Loses points for lack of detailed text instructions and the inherent limitations of modified sine wave designs). schema convertisseur 12v 220v 1000w 17pdf new
A PDF schematic dated around 2017 or newer will show improvements over older designs: If you need the actual PDF, try appending