You can find comprehensive circuit guides and schematic copies on several technical documentation platforms: Homage UPS Schematic Guide (Scribd) Detailed Component Overview (Studocu) 1000VA UPS Circuit Explanation (Scribd)
: Includes overload output protection and fuses (like slow-blow FS1) to guard against short circuits. Available PDF Resources Homage Ups Circuit Diagram 1000va Pdf
AC Input (L) ---[Fuse]---[MOV]---[Common Mode Choke]---(to AVR primary) | (N) AVR Autotransformer You can find comprehensive circuit guides and schematic